/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/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:00:35,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:00:35,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:00:35,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:00:35,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:00:35,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:00:35,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:00:35,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:00:35,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:00:35,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:00:35,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:00:35,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:00:35,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:00:35,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:00:35,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:00:35,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:00:35,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:00:35,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:00:35,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:00:35,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:00:35,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:00:35,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:00:35,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:00:35,493 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:00:35,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:00:35,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:00:35,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:00:35,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:00:35,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:00:35,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:00:35,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:00:35,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:00:35,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:00:35,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:00:35,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:00:35,956 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:00:35,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-10-23 22:00:36,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb341b252/c9390f764e72485aadace1b5505ab9d3/FLAG61ed7f78c [2020-10-23 22:00:36,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:00:36,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2020-10-23 22:00:36,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb341b252/c9390f764e72485aadace1b5505ab9d3/FLAG61ed7f78c [2020-10-23 22:00:37,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb341b252/c9390f764e72485aadace1b5505ab9d3 [2020-10-23 22:00:37,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:00:37,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:00:37,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:00:37,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:00:37,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:00:37,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1eee9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37, skipping insertion in model container [2020-10-23 22:00:37,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:00:37,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:00:37,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:00:37,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:00:37,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:00:37,377 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:00:37,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37 WrapperNode [2020-10-23 22:00:37,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:00:37,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:00:37,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:00:37,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:00:37,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (1/1) ... [2020-10-23 22:00:37,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:00:37,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:00:37,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:00:37,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:00:37,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (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 [2020-10-23 22:00:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:00:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:00:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:00:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:00:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:00:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:00:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:00:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:00:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:00:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:00:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:00:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:00:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:00:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:00:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:00:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:00:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:00:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:00:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:00:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:00:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:00:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:00:37,957 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:00:37,970 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 22:00:37,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:00:37 BoogieIcfgContainer [2020-10-23 22:00:37,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:00:37,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:00:37,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:00:37,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:00:37,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:00:37" (1/3) ... [2020-10-23 22:00:37,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1b0aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:00:37, skipping insertion in model container [2020-10-23 22:00:37,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:37" (2/3) ... [2020-10-23 22:00:37,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1b0aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:00:37, skipping insertion in model container [2020-10-23 22:00:37,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:00:37" (3/3) ... [2020-10-23 22:00:37,995 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-10-23 22:00:38,021 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:00:38,031 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:00:38,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:00:38,071 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:00:38,071 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:00:38,071 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:00:38,072 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:00:38,072 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:00:38,072 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:00:38,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:00:38,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:00:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-23 22:00:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 22:00:38,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:38,102 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] [2020-10-23 22:00:38,102 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:38,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1720334319, now seen corresponding path program 1 times [2020-10-23 22:00:38,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:38,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240617807] [2020-10-23 22:00:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:38,194 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:38,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240617807] [2020-10-23 22:00:38,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:38,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172240583] [2020-10-23 22:00:38,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:38,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:38,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:38,596 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 8 states. [2020-10-23 22:00:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:39,336 INFO L93 Difference]: Finished difference Result 127 states and 161 transitions. [2020-10-23 22:00:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:00:39,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-23 22:00:39,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:39,349 INFO L225 Difference]: With dead ends: 127 [2020-10-23 22:00:39,349 INFO L226 Difference]: Without dead ends: 84 [2020-10-23 22:00:39,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:00:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-23 22:00:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2020-10-23 22:00:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-23 22:00:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-10-23 22:00:39,418 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 43 [2020-10-23 22:00:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:39,419 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-10-23 22:00:39,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-10-23 22:00:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 22:00:39,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:39,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:39,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:00:39,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash -545340875, now seen corresponding path program 1 times [2020-10-23 22:00:39,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:39,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295229948] [2020-10-23 22:00:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:39,550 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:39,559 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:39,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295229948] [2020-10-23 22:00:39,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:39,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:00:39,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815147399] [2020-10-23 22:00:39,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:00:39,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:39,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:00:39,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:39,829 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 10 states. [2020-10-23 22:00:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:40,774 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-10-23 22:00:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 22:00:40,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-23 22:00:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:40,779 INFO L225 Difference]: With dead ends: 97 [2020-10-23 22:00:40,779 INFO L226 Difference]: Without dead ends: 93 [2020-10-23 22:00:40,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-23 22:00:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-23 22:00:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-10-23 22:00:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-23 22:00:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-23 22:00:40,807 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 49 [2020-10-23 22:00:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:40,808 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-23 22:00:40,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:00:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-23 22:00:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-23 22:00:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:40,810 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:00:40,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:00:40,811 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash 752260360, now seen corresponding path program 1 times [2020-10-23 22:00:40,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:40,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661216451] [2020-10-23 22:00:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:40,976 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:40,978 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:41,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661216451] [2020-10-23 22:00:41,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:41,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:00:41,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821380244] [2020-10-23 22:00:41,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:00:41,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:41,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:00:41,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:00:41,078 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 6 states. [2020-10-23 22:00:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:41,430 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-10-23 22:00:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 22:00:41,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-23 22:00:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:41,433 INFO L225 Difference]: With dead ends: 150 [2020-10-23 22:00:41,433 INFO L226 Difference]: Without dead ends: 100 [2020-10-23 22:00:41,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-23 22:00:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-10-23 22:00:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-23 22:00:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-10-23 22:00:41,459 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 55 [2020-10-23 22:00:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:41,460 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-10-23 22:00:41,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:00:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-10-23 22:00:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-23 22:00:41,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:41,463 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:00:41,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:00:41,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:41,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:41,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1337397749, now seen corresponding path program 1 times [2020-10-23 22:00:41,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:41,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736599527] [2020-10-23 22:00:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:41,852 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:41,854 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 22:00:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:41,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736599527] [2020-10-23 22:00:41,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:41,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:00:41,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186682791] [2020-10-23 22:00:41,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:00:41,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:41,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:00:41,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:00:41,990 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 9 states. [2020-10-23 22:00:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:42,724 INFO L93 Difference]: Finished difference Result 142 states and 159 transitions. [2020-10-23 22:00:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:00:42,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-23 22:00:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:42,726 INFO L225 Difference]: With dead ends: 142 [2020-10-23 22:00:42,726 INFO L226 Difference]: Without dead ends: 89 [2020-10-23 22:00:42,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-23 22:00:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-23 22:00:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-23 22:00:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-23 22:00:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-10-23 22:00:42,757 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 64 [2020-10-23 22:00:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:42,758 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-10-23 22:00:42,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:00:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-10-23 22:00:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-23 22:00:42,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:42,760 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-23 22:00:42,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:00:42,761 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:42,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2108788121, now seen corresponding path program 2 times [2020-10-23 22:00:42,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:42,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134225523] [2020-10-23 22:00:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:43,152 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:43,154 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 22:00:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:43,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134225523] [2020-10-23 22:00:43,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:43,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:43,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331026497] [2020-10-23 22:00:43,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:43,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:43,309 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 8 states. [2020-10-23 22:00:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:43,846 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-23 22:00:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 22:00:43,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-23 22:00:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:43,849 INFO L225 Difference]: With dead ends: 116 [2020-10-23 22:00:43,849 INFO L226 Difference]: Without dead ends: 112 [2020-10-23 22:00:43,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-23 22:00:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-23 22:00:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-10-23 22:00:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-23 22:00:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-23 22:00:43,897 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 70 [2020-10-23 22:00:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:43,900 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-23 22:00:43,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-23 22:00:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-23 22:00:43,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:43,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-23 22:00:43,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:00:43,905 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:43,906 INFO L82 PathProgramCache]: Analyzing trace with hash -469024378, now seen corresponding path program 3 times [2020-10-23 22:00:43,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:43,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792508994] [2020-10-23 22:00:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:44,679 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:44,681 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 22:00:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 22:00:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:44,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792508994] [2020-10-23 22:00:44,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:44,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:00:44,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512843647] [2020-10-23 22:00:44,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:00:44,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:00:44,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:44,858 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 10 states. [2020-10-23 22:00:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:45,604 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-10-23 22:00:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:00:45,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-23 22:00:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:45,607 INFO L225 Difference]: With dead ends: 146 [2020-10-23 22:00:45,607 INFO L226 Difference]: Without dead ends: 142 [2020-10-23 22:00:45,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-10-23 22:00:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-23 22:00:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 102. [2020-10-23 22:00:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-23 22:00:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-10-23 22:00:45,647 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 79 [2020-10-23 22:00:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:45,648 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-10-23 22:00:45,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:00:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-10-23 22:00:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-23 22:00:45,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:45,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-23 22:00:45,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:00:45,656 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1389623993, now seen corresponding path program 4 times [2020-10-23 22:00:45,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:45,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233228484] [2020-10-23 22:00:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:46,558 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:46,559 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:46,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 22:00:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 22:00:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 22:00:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:46,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233228484] [2020-10-23 22:00:46,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:46,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 22:00:46,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031130853] [2020-10-23 22:00:46,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 22:00:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 22:00:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:00:46,840 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 12 states. [2020-10-23 22:00:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:47,794 INFO L93 Difference]: Finished difference Result 176 states and 198 transitions. [2020-10-23 22:00:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 22:00:47,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-10-23 22:00:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:47,801 INFO L225 Difference]: With dead ends: 176 [2020-10-23 22:00:47,802 INFO L226 Difference]: Without dead ends: 172 [2020-10-23 22:00:47,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-10-23 22:00:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-23 22:00:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 111. [2020-10-23 22:00:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-23 22:00:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-10-23 22:00:47,838 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 88 [2020-10-23 22:00:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:47,838 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-10-23 22:00:47,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 22:00:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-10-23 22:00:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-23 22:00:47,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:47,843 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-23 22:00:47,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:00:47,844 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:47,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1150610086, now seen corresponding path program 5 times [2020-10-23 22:00:47,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:47,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151551965] [2020-10-23 22:00:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:48,797 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:48,799 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 22:00:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 22:00:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 22:00:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 22:00:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:49,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151551965] [2020-10-23 22:00:49,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:49,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:00:49,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895974052] [2020-10-23 22:00:49,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:00:49,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:00:49,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:00:49,077 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 16 states. [2020-10-23 22:00:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:51,532 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2020-10-23 22:00:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-23 22:00:51,533 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-23 22:00:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:51,535 INFO L225 Difference]: With dead ends: 163 [2020-10-23 22:00:51,535 INFO L226 Difference]: Without dead ends: 159 [2020-10-23 22:00:51,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=444, Invalid=1812, Unknown=0, NotChecked=0, Total=2256 [2020-10-23 22:00:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-23 22:00:51,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2020-10-23 22:00:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-23 22:00:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2020-10-23 22:00:51,569 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 97 [2020-10-23 22:00:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:51,570 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2020-10-23 22:00:51,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:00:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2020-10-23 22:00:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 22:00:51,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:51,572 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2020-10-23 22:00:51,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:00:51,572 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1372166708, now seen corresponding path program 6 times [2020-10-23 22:00:51,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:51,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880547081] [2020-10-23 22:00:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:52,905 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:52,907 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 22:00:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 22:00:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:00:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 22:00:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:00:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 22:00:53,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880547081] [2020-10-23 22:00:53,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:53,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:00:53,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009669211] [2020-10-23 22:00:53,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:00:53,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:53,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:00:53,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:00:53,048 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand 7 states. [2020-10-23 22:00:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:53,513 INFO L93 Difference]: Finished difference Result 214 states and 243 transitions. [2020-10-23 22:00:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:00:53,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-23 22:00:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:53,517 INFO L225 Difference]: With dead ends: 214 [2020-10-23 22:00:53,517 INFO L226 Difference]: Without dead ends: 134 [2020-10-23 22:00:53,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:00:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-23 22:00:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-10-23 22:00:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-23 22:00:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2020-10-23 22:00:53,544 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 112 [2020-10-23 22:00:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:53,544 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2020-10-23 22:00:53,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:00:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2020-10-23 22:00:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-23 22:00:53,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:53,546 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-23 22:00:53,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:00:53,547 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2139141218, now seen corresponding path program 7 times [2020-10-23 22:00:53,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582128170] [2020-10-23 22:00:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:56,616 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:56,617 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 22:00:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 22:00:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:00:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 22:00:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-23 22:00:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-23 22:00:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-23 22:00:56,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582128170] [2020-10-23 22:00:56,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:56,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:56,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337819794] [2020-10-23 22:00:56,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:56,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:56,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:56,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:56,825 INFO L87 Difference]: Start difference. First operand 132 states and 147 transitions. Second operand 8 states. [2020-10-23 22:00:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:57,232 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2020-10-23 22:00:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 22:00:57,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-10-23 22:00:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:57,233 INFO L225 Difference]: With dead ends: 132 [2020-10-23 22:00:57,233 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:00:57,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:00:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:00:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:00:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:00:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:00:57,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2020-10-23 22:00:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:57,235 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:00:57,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:00:57,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:00:57,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 22:00:57,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:00:57,352 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 54 [2020-10-23 22:00:57,718 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 76 [2020-10-23 22:00:57,847 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2020-10-23 22:00:58,658 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 18 [2020-10-23 22:00:59,070 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,071 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#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)|)) [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point L12-4(line 12) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,072 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,073 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,073 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,073 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:00:59,073 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 22:00:59,073 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 22:00:59,073 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:00:59,073 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:00:59,073 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:00:59,074 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,074 INFO L277 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-10-23 22:00:59,074 INFO L270 CegarLoopResult]: At program point L35-4(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,074 INFO L277 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: true [2020-10-23 22:00:59,074 INFO L270 CegarLoopResult]: At program point L35-5(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,074 INFO L270 CegarLoopResult]: At program point L35-6(lines 35 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,074 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-23 22:00:59,074 INFO L277 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-10-23 22:00:59,075 INFO L277 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-10-23 22:00:59,075 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 25 40) the Hoare annotation is: true [2020-10-23 22:00:59,075 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,075 INFO L270 CegarLoopResult]: At program point L36-3(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,075 INFO L277 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-23 22:00:59,075 INFO L270 CegarLoopResult]: At program point L36-4(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,075 INFO L277 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-10-23 22:00:59,075 INFO L270 CegarLoopResult]: At program point L36-5(lines 36 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,076 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-23 22:00:59,076 INFO L277 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-10-23 22:00:59,076 INFO L277 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: true [2020-10-23 22:00:59,076 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,076 INFO L270 CegarLoopResult]: At program point L37-1(lines 36 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,076 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-23 22:00:59,076 INFO L277 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-10-23 22:00:59,076 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-23 22:00:59,077 INFO L277 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-10-23 22:00:59,077 INFO L277 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: true [2020-10-23 22:00:59,077 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 25 40) the Hoare annotation is: true [2020-10-23 22:00:59,077 INFO L277 CegarLoopResult]: At program point L38(lines 25 40) the Hoare annotation is: true [2020-10-23 22:00:59,077 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (* 3 main_~i~0) main_~j~0) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,077 INFO L270 CegarLoopResult]: At program point L34-3(line 34) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (* 3 main_~i~0) main_~j~0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ |main_#t~post6| 2) (* 2 main_~n~0))) [2020-10-23 22:00:59,077 INFO L277 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-10-23 22:00:59,077 INFO L270 CegarLoopResult]: At program point L34-4(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) .cse0) (<= (+ |main_#t~post6| 2) .cse0))) [2020-10-23 22:00:59,077 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 25 40) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L270 CegarLoopResult]: At program point L34-5(lines 34 37) the Hoare annotation is: (or (= main_~i~0 0) (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) (* 2 main_~n~0)))) [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point L26-4(line 26) the Hoare annotation is: true [2020-10-23 22:00:59,078 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2020-10-23 22:00:59,078 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:00:59,078 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 22:00:59,079 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:00:59,079 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:00:59,079 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:00:59,079 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:00:59,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:00:59 BoogieIcfgContainer [2020-10-23 22:00:59,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:00:59,102 INFO L168 Benchmark]: Toolchain (without parser) took 22026.03 ms. Allocated memory was 172.0 MB in the beginning and 358.6 MB in the end (delta: 186.6 MB). Free memory was 147.6 MB in the beginning and 233.3 MB in the end (delta: -85.7 MB). Peak memory consumption was 210.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:59,103 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 172.0 MB. Free memory was 145.1 MB in the beginning and 145.0 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:00:59,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.10 ms. Allocated memory is still 172.0 MB. Free memory was 147.0 MB in the beginning and 137.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:59,104 INFO L168 Benchmark]: Boogie Preprocessor took 64.91 ms. Allocated memory is still 172.0 MB. Free memory was 137.5 MB in the beginning and 135.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:59,105 INFO L168 Benchmark]: RCFGBuilder took 526.96 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 152.5 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:59,106 INFO L168 Benchmark]: TraceAbstraction took 21119.69 ms. Allocated memory was 172.0 MB in the beginning and 358.6 MB in the end (delta: 186.6 MB). Free memory was 152.0 MB in the beginning and 233.3 MB in the end (delta: -81.3 MB). Peak memory consumption was 214.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:59,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 172.0 MB. Free memory was 145.1 MB in the beginning and 145.0 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.10 ms. Allocated memory is still 172.0 MB. Free memory was 147.0 MB in the beginning and 137.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.91 ms. Allocated memory is still 172.0 MB. Free memory was 137.5 MB in the beginning and 135.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 526.96 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 152.5 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21119.69 ms. Allocated memory was 172.0 MB in the beginning and 358.6 MB in the end (delta: 186.6 MB). Free memory was 152.0 MB in the beginning and 233.3 MB in the end (delta: -81.3 MB). Peak memory consumption was 214.4 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: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 <= n && i + 1 <= n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: i == 0 || (1 <= n && i + 1 <= 2 * n) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 <= n && j + 1 <= 3 * i) && i + 1 <= n - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 25]: 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.1s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 481 SDtfs, 1141 SDslu, 840 SDs, 0 SdLazy, 2983 SolverSat, 204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 183 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 67 LocationsWithAnnotation, 271 PreInvPairs, 369 NumberOfFragments, 342 HoareAnnotationTreeSize, 271 FomulaSimplifications, 1359927 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 67 FomulaSimplificationsInter, 3552 FormulaSimplificationTreeSizeReductionInter, 0.8s 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...