/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-regression/test23-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:52:46,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:52:46,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:52:46,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:52:46,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:52:46,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:52:46,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:52:46,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:52:46,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:52:46,922 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:52:46,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:52:46,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:52:46,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:52:46,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:52:46,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:52:46,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:52:46,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:52:46,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:52:46,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:52:46,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:52:46,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:52:46,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:52:46,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:52:46,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:52:46,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:52:46,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:52:46,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:52:46,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:52:46,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:52:46,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:52:46,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:52:47,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:52:47,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:52:47,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:52:47,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:52:47,436 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:52:47,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-2.c [2020-12-22 03:52:47,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e329102e/d60333b3a5084bad9edc3d4e6eb717d5/FLAGc8c2fcef4 [2020-12-22 03:52:48,269 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:52:48,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c [2020-12-22 03:52:48,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e329102e/d60333b3a5084bad9edc3d4e6eb717d5/FLAGc8c2fcef4 [2020-12-22 03:52:48,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e329102e/d60333b3a5084bad9edc3d4e6eb717d5 [2020-12-22 03:52:48,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:52:48,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:52:48,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:52:48,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:52:48,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:52:48,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba7c0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48, skipping insertion in model container [2020-12-22 03:52:48,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:52:48,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:52:48,840 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2020-12-22 03:52:48,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:52:48,860 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:52:48,885 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2020-12-22 03:52:48,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:52:48,907 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:52:48,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48 WrapperNode [2020-12-22 03:52:48,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:52:48,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:52:48,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:52:48,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:52:48,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:52:48,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:52:48,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:52:48,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:52:48,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:52:48,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:52:48,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:52:48,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:52:48,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (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 [2020-12-22 03:52:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:52:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:52:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:52:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:52:49,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:52:49,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:52:49,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:52:49,571 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 03:52:49,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:52:49 BoogieIcfgContainer [2020-12-22 03:52:49,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:52:49,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:52:49,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:52:49,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:52:49,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:52:48" (1/3) ... [2020-12-22 03:52:49,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77700c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:52:49, skipping insertion in model container [2020-12-22 03:52:49,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (2/3) ... [2020-12-22 03:52:49,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77700c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:52:49, skipping insertion in model container [2020-12-22 03:52:49,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:52:49" (3/3) ... [2020-12-22 03:52:49,587 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-2.c [2020-12-22 03:52:49,594 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:52:49,600 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:52:49,624 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:52:49,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:52:49,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:52:49,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:52:49,657 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:52:49,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:52:49,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:52:49,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:52:49,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:52:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-22 03:52:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:52:49,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:49,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:49,684 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:49,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2020-12-22 03:52:49,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:49,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229998627] [2020-12-22 03:52:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:49,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229998627] [2020-12-22 03:52:49,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:52:49,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:52:49,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866265408] [2020-12-22 03:52:49,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:52:49,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:52:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:52:49,971 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-22 03:52:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:50,008 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-12-22 03:52:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:52:50,010 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-12-22 03:52:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:50,024 INFO L225 Difference]: With dead ends: 30 [2020-12-22 03:52:50,024 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 03:52:50,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:52:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 03:52:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 03:52:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 03:52:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-22 03:52:50,074 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2020-12-22 03:52:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:50,075 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-22 03:52:50,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:52:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-22 03:52:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:52:50,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:50,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:50,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:52:50,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:50,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2020-12-22 03:52:50,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:50,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862077293] [2020-12-22 03:52:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862077293] [2020-12-22 03:52:50,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:52:50,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 03:52:50,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172347076] [2020-12-22 03:52:50,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 03:52:50,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:50,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 03:52:50,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 03:52:50,559 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 11 states. [2020-12-22 03:52:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:51,073 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-12-22 03:52:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 03:52:51,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-12-22 03:52:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:51,075 INFO L225 Difference]: With dead ends: 59 [2020-12-22 03:52:51,075 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 03:52:51,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-12-22 03:52:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 03:52:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 25. [2020-12-22 03:52:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 03:52:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-12-22 03:52:51,087 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2020-12-22 03:52:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:51,088 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-12-22 03:52:51,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 03:52:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-22 03:52:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:52:51,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:51,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:51,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:52:51,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:51,090 INFO L82 PathProgramCache]: Analyzing trace with hash -108238562, now seen corresponding path program 1 times [2020-12-22 03:52:51,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:51,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235963303] [2020-12-22 03:52:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:51,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235963303] [2020-12-22 03:52:51,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:52:51,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 03:52:51,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974241671] [2020-12-22 03:52:51,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 03:52:51,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:51,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 03:52:51,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 03:52:51,194 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 9 states. [2020-12-22 03:52:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:51,395 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-22 03:52:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 03:52:51,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-22 03:52:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:51,397 INFO L225 Difference]: With dead ends: 54 [2020-12-22 03:52:51,397 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 03:52:51,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-12-22 03:52:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 03:52:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 25. [2020-12-22 03:52:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 03:52:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-22 03:52:51,405 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2020-12-22 03:52:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:51,406 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-22 03:52:51,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 03:52:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-22 03:52:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:52:51,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:51,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:51,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:52:51,407 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:51,408 INFO L82 PathProgramCache]: Analyzing trace with hash -501265572, now seen corresponding path program 1 times [2020-12-22 03:52:51,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:51,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658195565] [2020-12-22 03:52:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:51,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658195565] [2020-12-22 03:52:51,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:52:51,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 03:52:51,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467192359] [2020-12-22 03:52:51,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 03:52:51,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:51,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 03:52:51,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 03:52:51,643 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 11 states. [2020-12-22 03:52:52,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:52,073 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-12-22 03:52:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 03:52:52,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-12-22 03:52:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:52,075 INFO L225 Difference]: With dead ends: 51 [2020-12-22 03:52:52,075 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 03:52:52,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-12-22 03:52:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 03:52:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 22. [2020-12-22 03:52:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 03:52:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 03:52:52,090 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2020-12-22 03:52:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:52,091 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 03:52:52,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 03:52:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 03:52:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 03:52:52,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:52,094 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:52,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:52:52,094 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:52,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1851619425, now seen corresponding path program 1 times [2020-12-22 03:52:52,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:52,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763299572] [2020-12-22 03:52:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:52,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763299572] [2020-12-22 03:52:52,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891968209] [2020-12-22 03:52:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 03:52:52,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:52:52,626 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-12-22 03:52:52,628 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:52,637 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:52,640 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:52,642 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2020-12-22 03:52:52,823 INFO L348 Elim1Store]: treesize reduction 43, result has 39.4 percent of original size [2020-12-22 03:52:52,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 39 [2020-12-22 03:52:52,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:52,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 03:52:52,857 INFO L625 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2020-12-22 03:52:52,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:52,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-12-22 03:52:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:52,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:52:52,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-12-22 03:52:52,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540385822] [2020-12-22 03:52:52,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 03:52:52,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:52,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 03:52:52,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 03:52:52,890 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 16 states. [2020-12-22 03:52:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:53,903 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-12-22 03:52:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 03:52:53,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-22 03:52:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:53,904 INFO L225 Difference]: With dead ends: 55 [2020-12-22 03:52:53,905 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 03:52:53,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2020-12-22 03:52:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 03:52:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 27. [2020-12-22 03:52:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 03:52:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-12-22 03:52:53,914 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2020-12-22 03:52:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:53,915 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-12-22 03:52:53,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 03:52:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-12-22 03:52:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 03:52:53,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:53,916 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:54,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:54,131 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:54,133 INFO L82 PathProgramCache]: Analyzing trace with hash 829921185, now seen corresponding path program 1 times [2020-12-22 03:52:54,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:54,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913764079] [2020-12-22 03:52:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:54,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913764079] [2020-12-22 03:52:54,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437973717] [2020-12-22 03:52:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:54,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 03:52:54,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:52:54,562 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-12-22 03:52:54,568 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:54,577 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:54,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:54,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2020-12-22 03:52:54,737 INFO L348 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2020-12-22 03:52:54,739 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 34 [2020-12-22 03:52:54,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:54,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 03:52:54,765 INFO L625 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2020-12-22 03:52:54,768 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:54,769 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-12-22 03:52:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:54,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:52:54,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-12-22 03:52:54,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416924079] [2020-12-22 03:52:54,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 03:52:54,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:54,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 03:52:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 03:52:54,798 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 16 states. [2020-12-22 03:52:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:55,474 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-22 03:52:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 03:52:55,475 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-22 03:52:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:55,476 INFO L225 Difference]: With dead ends: 57 [2020-12-22 03:52:55,476 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 03:52:55,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-22 03:52:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 03:52:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 24. [2020-12-22 03:52:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 03:52:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-12-22 03:52:55,485 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2020-12-22 03:52:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:55,485 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-12-22 03:52:55,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 03:52:55,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-22 03:52:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 03:52:55,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:55,486 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:55,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:55,701 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:55,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1495361690, now seen corresponding path program 2 times [2020-12-22 03:52:55,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:55,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769328928] [2020-12-22 03:52:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769328928] [2020-12-22 03:52:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447637454] [2020-12-22 03:52:55,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:56,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 03:52:56,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:52:56,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 03:52:56,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:52:56,137 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2020-12-22 03:52:56,138 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:56,149 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:56,151 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:56,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2020-12-22 03:52:56,317 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:56,318 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 86 [2020-12-22 03:52:56,324 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:56,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 03:52:56,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:56,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 03:52:56,331 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:56,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 03:52:56,337 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-12-22 03:52:56,368 INFO L625 ElimStorePlain]: treesize reduction 47, result has 33.8 percent of original size [2020-12-22 03:52:56,371 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:56,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:64, output treesize:9 [2020-12-22 03:52:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:56,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:52:56,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 17 [2020-12-22 03:52:56,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356820103] [2020-12-22 03:52:56,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 03:52:56,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 03:52:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-12-22 03:52:56,416 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 18 states. [2020-12-22 03:52:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:57,760 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-12-22 03:52:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 03:52:57,763 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 20 [2020-12-22 03:52:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:57,764 INFO L225 Difference]: With dead ends: 63 [2020-12-22 03:52:57,764 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 03:52:57,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=359, Invalid=1201, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 03:52:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 03:52:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 26. [2020-12-22 03:52:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 03:52:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-22 03:52:57,773 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2020-12-22 03:52:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:57,773 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-22 03:52:57,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 03:52:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-22 03:52:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 03:52:57,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:57,774 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:57,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:57,988 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:57,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1013708501, now seen corresponding path program 3 times [2020-12-22 03:52:57,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:57,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895850494] [2020-12-22 03:52:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:58,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895850494] [2020-12-22 03:52:58,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526541048] [2020-12-22 03:52:58,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:52:58,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 03:52:58,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:52:58,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 03:52:58,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:52:58,372 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2020-12-22 03:52:58,373 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:58,383 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:58,384 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:58,385 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38 [2020-12-22 03:52:58,707 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:58,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:52:58,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 03:52:58,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 03:52:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 03:52:58,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:52:58,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 21 [2020-12-22 03:52:58,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600724005] [2020-12-22 03:52:58,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 03:52:58,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:58,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 03:52:58,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-12-22 03:52:58,816 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 22 states. [2020-12-22 03:52:59,984 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 03:53:00,123 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-12-22 03:53:00,547 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-12-22 03:53:01,174 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-22 03:53:02,538 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-22 03:53:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:53:02,644 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-12-22 03:53:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-22 03:53:02,646 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2020-12-22 03:53:02,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:53:02,647 INFO L225 Difference]: With dead ends: 65 [2020-12-22 03:53:02,647 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 03:53:02,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=659, Invalid=2763, Unknown=0, NotChecked=0, Total=3422 [2020-12-22 03:53:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 03:53:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-22 03:53:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 03:53:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-22 03:53:02,666 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-12-22 03:53:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:53:02,666 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-22 03:53:02,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 03:53:02,666 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-22 03:53:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 03:53:02,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:53:02,667 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:53:02,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:02,882 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:53:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:53:02,883 INFO L82 PathProgramCache]: Analyzing trace with hash 722062576, now seen corresponding path program 2 times [2020-12-22 03:53:02,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:53:02,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861430385] [2020-12-22 03:53:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:53:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:53:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:53:03,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861430385] [2020-12-22 03:53:03,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751214936] [2020-12-22 03:53:03,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:03,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 03:53:03,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:53:03,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 03:53:03,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:53:03,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-12-22 03:53:03,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:53:03,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:53:03,288 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:53:03,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2020-12-22 03:53:03,570 INFO L348 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2020-12-22 03:53:03,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 34 [2020-12-22 03:53:03,573 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:53:03,576 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 03:53:03,599 INFO L625 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2020-12-22 03:53:03,602 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:53:03,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-12-22 03:53:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:53:03,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:53:03,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 21 [2020-12-22 03:53:03,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575553568] [2020-12-22 03:53:03,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 03:53:03,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:53:03,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 03:53:03,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-12-22 03:53:03,639 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 22 states. [2020-12-22 03:53:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:53:04,892 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-12-22 03:53:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 03:53:04,893 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 24 [2020-12-22 03:53:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:53:04,894 INFO L225 Difference]: With dead ends: 32 [2020-12-22 03:53:04,894 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 03:53:04,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 03:53:04,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 03:53:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 03:53:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 03:53:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-22 03:53:04,901 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-12-22 03:53:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:53:04,902 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-22 03:53:04,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 03:53:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-22 03:53:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 03:53:04,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:53:04,903 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:53:05,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:05,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:53:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:53:05,118 INFO L82 PathProgramCache]: Analyzing trace with hash -372767691, now seen corresponding path program 3 times [2020-12-22 03:53:05,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:53:05,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242542902] [2020-12-22 03:53:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:53:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:53:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:53:05,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242542902] [2020-12-22 03:53:05,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015856451] [2020-12-22 03:53:05,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:05,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 03:53:05,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:53:05,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 03:53:05,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:53:05,535 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2020-12-22 03:53:05,538 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:53:05,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:53:05,549 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:53:05,550 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2020-12-22 03:53:05,860 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:53:05,864 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:53:05,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 03:53:05,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 03:53:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 03:53:05,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:53:05,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2020-12-22 03:53:05,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251072648] [2020-12-22 03:53:05,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 03:53:05,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:53:05,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 03:53:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-12-22 03:53:05,939 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 24 states. [2020-12-22 03:53:06,777 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-22 03:53:07,042 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-22 03:53:07,326 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-22 03:53:07,608 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-22 03:53:07,907 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 03:53:08,394 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-22 03:53:08,583 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-22 03:53:08,781 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 03:53:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:53:08,782 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-12-22 03:53:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 03:53:08,782 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 26 [2020-12-22 03:53:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:53:08,783 INFO L225 Difference]: With dead ends: 32 [2020-12-22 03:53:08,783 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 03:53:08,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=423, Invalid=1469, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 03:53:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 03:53:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 03:53:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 03:53:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 03:53:08,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-12-22 03:53:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:53:08,786 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 03:53:08,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 03:53:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 03:53:08,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 03:53:08,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:08,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 03:53:09,418 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 135 [2020-12-22 03:53:10,152 WARN L197 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 60 [2020-12-22 03:53:10,309 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2020-12-22 03:53:10,641 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-12-22 03:53:10,651 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,651 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,651 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,652 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2020-12-22 03:53:10,652 INFO L192 CegarLoopUtils]: At program point L53(lines 33 54) the Hoare annotation is: true [2020-12-22 03:53:10,652 INFO L189 CegarLoopUtils]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-12-22 03:53:10,652 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,652 INFO L189 CegarLoopUtils]: For program point L25(line 25) no Hoare annotation was computed. [2020-12-22 03:53:10,652 INFO L189 CegarLoopUtils]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-12-22 03:53:10,652 INFO L185 CegarLoopUtils]: At program point L25-3(lines 23 26) the Hoare annotation is: (let ((.cse0 (= |~#d2~0.offset| 0)) (.cse1 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse2 (= |ULTIMATE.start_get_dummy_#res.offset| 0)) (.cse3 (= |~#d1~0.offset| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|) .cse3) (and .cse0 .cse1 (= |~#d1~0.base| |ULTIMATE.start_get_dummy_#res.base|) .cse2 .cse3))) [2020-12-22 03:53:10,653 INFO L189 CegarLoopUtils]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-12-22 03:53:10,653 INFO L189 CegarLoopUtils]: For program point L25-6(line 25) no Hoare annotation was computed. [2020-12-22 03:53:10,653 INFO L185 CegarLoopUtils]: At program point L25-7(lines 23 26) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse1 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|)) (.cse2 (= |~#d1~0.offset| 0))) (or (and .cse0 (not .cse1) (not (= ULTIMATE.start_main_~pd1~0.base |ULTIMATE.start_get_dummy_#res.base|)) .cse2) (and (= ULTIMATE.start_main_~pd1~0.offset 0) (let ((.cse3 (= |~#d2~0.offset| 0))) (or (and .cse3 .cse0 .cse1) (and .cse3 (= |ULTIMATE.start_get_dummy_#res.offset| 0) (not (= |~#d1~0.base| |ULTIMATE.start_get_dummy_#res.base|)) (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|)))) .cse2))) [2020-12-22 03:53:10,653 INFO L185 CegarLoopUtils]: At program point L46(lines 34 54) the Hoare annotation is: false [2020-12-22 03:53:10,653 INFO L189 CegarLoopUtils]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2020-12-22 03:53:10,653 INFO L185 CegarLoopUtils]: At program point L42-3(lines 42 44) the Hoare annotation is: (let ((.cse6 (= |~#d2~0.offset| 0)) (.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse3 (= ULTIMATE.start_main_~pd1~0.offset 0)) (.cse7 (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base)) (.cse8 (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base)) (.cse9 (= ULTIMATE.start_main_~pd2~0.offset 0)) (.cse2 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base)) (.cse4 (= |~#d1~0.offset| 0)) (.cse5 (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)))) (or (and .cse0 (let ((.cse1 (div (+ ULTIMATE.start_main_~pa~0.offset (- 8)) 4))) (= .cse1 (select .cse2 (+ (* .cse1 4) ULTIMATE.start_main_~pd2~0.offset 8)))) (= (mod ULTIMATE.start_main_~pa~0.offset 4) 0) .cse3 (= |ULTIMATE.start_get_dummy_#res.offset| 0) (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|) (= ULTIMATE.start_main_~pd1~0.base |~#d2~0.base|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse6 .cse0 .cse3 .cse7 .cse8 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|) .cse9 (let ((.cse10 (div (+ (* ULTIMATE.start_main_~pa~0.offset (- 1)) 8) (- 4)))) (= (select .cse2 (+ (* .cse10 4) ULTIMATE.start_main_~pd2~0.offset 8)) .cse10)) .cse4 .cse5 (= (mod (* ULTIMATE.start_main_~pa~0.offset 3) (- 4)) 0)))) [2020-12-22 03:53:10,654 INFO L189 CegarLoopUtils]: For program point L38(lines 38 48) no Hoare annotation was computed. [2020-12-22 03:53:10,654 INFO L189 CegarLoopUtils]: For program point L42-4(lines 42 44) no Hoare annotation was computed. [2020-12-22 03:53:10,654 INFO L189 CegarLoopUtils]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2020-12-22 03:53:10,654 INFO L185 CegarLoopUtils]: At program point L30(lines 28 31) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse13 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base)) (.cse1 (= |ULTIMATE.start_check_#res| 1)) (.cse2 (= ULTIMATE.start_main_~pd1~0.offset 0)) (.cse3 (= |~#d1~0.offset| 0)) (.cse4 (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1))) (.cse5 (= |~#d2~0.offset| 0)) (.cse10 (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base)) (.cse11 (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base)) (.cse12 (= ULTIMATE.start_main_~pd2~0.offset 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|) .cse3 .cse4 .cse5 (exists ((aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 Int) (aux_div_ULTIMATE.start_main_~pa~0.offset_60 Int)) (let ((.cse8 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base)) (.cse9 (* aux_div_ULTIMATE.start_main_~pa~0.offset_60 4))) (let ((.cse6 (* 4 aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55)) (.cse7 (select .cse8 (+ (* aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 4) .cse9 8)))) (and (< 0 (+ .cse6 4)) (< ULTIMATE.start_main_~i~0 (+ .cse7 1)) (<= .cse6 0) (= aux_div_ULTIMATE.start_main_~pa~0.offset_60 (select .cse8 (+ ULTIMATE.start_main_~pd2~0.offset .cse9 8))) (<= .cse7 ULTIMATE.start_main_~i~0))))) .cse10 .cse11 .cse12 (let ((.cse14 (div (+ (* ULTIMATE.start_main_~pa~0.offset (- 1)) 8) (- 4)))) (= (select .cse13 (+ (* .cse14 4) ULTIMATE.start_main_~pd2~0.offset 8)) .cse14)) (= (mod (* ULTIMATE.start_main_~pa~0.offset 3) (- 4)) 0)) (and .cse0 (let ((.cse15 (div (+ ULTIMATE.start_main_~pa~0.offset (- 8)) 4))) (= .cse15 (select .cse13 (+ (* .cse15 4) ULTIMATE.start_main_~pd2~0.offset 8)))) (= (mod ULTIMATE.start_main_~pa~0.offset 4) 0) .cse1 (exists ((aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 Int) (aux_div_ULTIMATE.start_main_~pa~0.offset_50 Int)) (let ((.cse17 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base)) (.cse18 (* aux_div_ULTIMATE.start_main_~pa~0.offset_50 4))) (let ((.cse19 (select .cse17 (+ (* aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 4) .cse18 8))) (.cse16 (* 4 aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51))) (and (<= 0 .cse16) (= aux_div_ULTIMATE.start_main_~pa~0.offset_50 (select .cse17 (+ .cse18 ULTIMATE.start_main_~pd2~0.offset 8))) (<= .cse19 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 (+ .cse19 1)) (< .cse16 4))))) .cse2 (= |ULTIMATE.start_get_dummy_#res.offset| 0) (= ULTIMATE.start_main_~pd1~0.base |~#d2~0.base|) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~pd1~0.base |ULTIMATE.start_get_dummy_#res.base|) .cse10 .cse11 .cse12))) [2020-12-22 03:53:10,654 INFO L189 CegarLoopUtils]: For program point L14(lines 14 21) no Hoare annotation was computed. [2020-12-22 03:53:10,680 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,683 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,683 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,683 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,685 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,685 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,685 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,688 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,688 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,688 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,689 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,689 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,689 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,689 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,689 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,690 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,690 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,690 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,691 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:53:10 BoogieIcfgContainer [2020-12-22 03:53:10,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:53:10,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:53:10,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:53:10,696 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:53:10,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:52:49" (3/4) ... [2020-12-22 03:53:10,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 03:53:10,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-22 03:53:10,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-22 03:53:10,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:53:10,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:53:10,759 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((d2 == 0 && !(d1 == d2)) && \result == 0) && \result == d2) && d1 == 0) || ((((d2 == 0 && !(d1 == d2)) && d1 == \result) && \result == 0) && d1 == 0) [2020-12-22 03:53:10,759 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(d1 == d2) && !(pd1 == d1)) && !(pd1 == \result)) && d1 == 0) || ((pd1 == 0 && (((d2 == 0 && !(d1 == d2)) && pd1 == d1) || (((d2 == 0 && \result == 0) && !(d1 == \result)) && \result == d2))) && d1 == 0) [2020-12-22 03:53:10,760 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((!(d1 == d2) && (pa + -8) / 4 == unknown-#memory_int-unknown[pd2][(pa + -8) / 4 * 4 + pd2 + 8]) && pa % 4 == 0) && pd1 == 0) && \result == 0) && \result == d2) && pd1 == d2) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && d2 == 0) && pd1 == pd2) && pd2 == pa) && pd2 == 0) || ((((((((((d2 == 0 && !(d1 == d2)) && pd1 == 0) && pd1 == pd2) && pd2 == pa) && pd1 == d1) && pd2 == 0) && unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8] == (pa * -1 + 8) / -4) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pa * 3 % -4 == 0) [2020-12-22 03:53:10,761 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((!(d1 == d2) && \result == 1) && pd1 == 0) && pd1 == d1) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && d2 == 0) && (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_60 : int :: (((0 < 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 + 4 && i < unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4 + 8] + 1) && 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 <= 0) && aux_div_ULTIMATE.start_main_~pa~0.offset_60 == unknown-#memory_int-unknown[pd2][pd2 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4 + 8]) && unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4 + 8] <= i)) && pd1 == pd2) && pd2 == pa) && pd2 == 0) && unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8] == (pa * -1 + 8) / -4) && pa * 3 % -4 == 0) || ((((((((((((((!(d1 == d2) && (pa + -8) / 4 == unknown-#memory_int-unknown[pd2][(pa + -8) / 4 * 4 + pd2 + 8]) && pa % 4 == 0) && \result == 1) && (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_50 : int :: (((0 <= 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 && aux_div_ULTIMATE.start_main_~pa~0.offset_50 == unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0.offset_50 * 4 + pd2 + 8]) && unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_50 * 4 + 8] <= i) && i < unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_50 * 4 + 8] + 1) && 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 < 4)) && pd1 == 0) && \result == 0) && pd1 == d2) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && d2 == 0) && pd1 == \result) && pd1 == pd2) && pd2 == pa) && pd2 == 0) [2020-12-22 03:53:10,785 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-regression/test23-2.c-witness.graphml [2020-12-22 03:53:10,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:53:10,786 INFO L168 Benchmark]: Toolchain (without parser) took 22185.92 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 126.8 MB in the beginning and 235.2 MB in the end (delta: -108.5 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,787 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 125.8 MB in the end (delta: 99.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:53:10,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.78 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.49 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,788 INFO L168 Benchmark]: Boogie Preprocessor took 32.90 ms. Allocated memory is still 152.0 MB. Free memory was 114.9 MB in the beginning and 113.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,789 INFO L168 Benchmark]: RCFGBuilder took 580.12 ms. Allocated memory is still 152.0 MB. Free memory was 113.4 MB in the beginning and 96.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,789 INFO L168 Benchmark]: TraceAbstraction took 21120.13 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 96.3 MB in the beginning and 238.4 MB in the end (delta: -142.0 MB). Peak memory consumption was 152.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,789 INFO L168 Benchmark]: Witness Printer took 89.33 ms. Allocated memory is still 316.7 MB. Free memory was 238.4 MB in the beginning and 235.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,792 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 152.0 MB. Free memory was 125.9 MB in the beginning and 125.8 MB in the end (delta: 99.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 305.78 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.49 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.90 ms. Allocated memory is still 152.0 MB. Free memory was 114.9 MB in the beginning and 113.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 580.12 ms. Allocated memory is still 152.0 MB. Free memory was 113.4 MB in the beginning and 96.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21120.13 ms. Allocated memory was 152.0 MB in the beginning and 316.7 MB in the end (delta: 164.6 MB). Free memory was 96.3 MB in the beginning and 238.4 MB in the end (delta: -142.0 MB). Peak memory consumption was 152.5 MB. Max. memory is 8.0 GB. * Witness Printer took 89.33 ms. Allocated memory is still 316.7 MB. Free memory was 238.4 MB in the beginning and 235.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((d2 == 0 && !(d1 == d2)) && \result == 0) && \result == d2) && d1 == 0) || ((((d2 == 0 && !(d1 == d2)) && d1 == \result) && \result == 0) && d1 == 0) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((!(d1 == d2) && (pa + -8) / 4 == unknown-#memory_int-unknown[pd2][(pa + -8) / 4 * 4 + pd2 + 8]) && pa % 4 == 0) && pd1 == 0) && \result == 0) && \result == d2) && pd1 == d2) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && d2 == 0) && pd1 == pd2) && pd2 == pa) && pd2 == 0) || ((((((((((d2 == 0 && !(d1 == d2)) && pd1 == 0) && pd1 == pd2) && pd2 == pa) && pd1 == d1) && pd2 == 0) && unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8] == (pa * -1 + 8) / -4) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pa * 3 % -4 == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((!(d1 == d2) && !(pd1 == d1)) && !(pd1 == \result)) && d1 == 0) || ((pd1 == 0 && (((d2 == 0 && !(d1 == d2)) && pd1 == d1) || (((d2 == 0 && \result == 0) && !(d1 == \result)) && \result == d2))) && d1 == 0) - InvariantResult [Line: 28]: Loop Invariant [2020-12-22 03:53:10,804 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,805 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,806 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,807 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,807 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,807 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,807 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,808 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,809 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,809 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2020-12-22 03:53:10,811 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2020-12-22 03:53:10,811 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,811 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,811 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,812 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,812 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,812 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] [2020-12-22 03:53:10,812 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_50,QUANTIFIED] [2020-12-22 03:53:10,812 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51,QUANTIFIED] Derived loop invariant: ((((((((((((!(d1 == d2) && \result == 1) && pd1 == 0) && pd1 == d1) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && d2 == 0) && (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_60 : int :: (((0 < 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 + 4 && i < unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4 + 8] + 1) && 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 <= 0) && aux_div_ULTIMATE.start_main_~pa~0.offset_60 == unknown-#memory_int-unknown[pd2][pd2 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4 + 8]) && unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4 + 8] <= i)) && pd1 == pd2) && pd2 == pa) && pd2 == 0) && unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8] == (pa * -1 + 8) / -4) && pa * 3 % -4 == 0) || ((((((((((((((!(d1 == d2) && (pa + -8) / 4 == unknown-#memory_int-unknown[pd2][(pa + -8) / 4 * 4 + pd2 + 8]) && pa % 4 == 0) && \result == 1) && (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_50 : int :: (((0 <= 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 && aux_div_ULTIMATE.start_main_~pa~0.offset_50 == unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0.offset_50 * 4 + pd2 + 8]) && unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_50 * 4 + 8] <= i) && i < unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 * 4 + aux_div_ULTIMATE.start_main_~pa~0.offset_50 * 4 + 8] + 1) && 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_50_51 < 4)) && pd1 == 0) && \result == 0) && pd1 == d2) && d1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && d2 == 0) && pd1 == \result) && pd1 == pd2) && pd2 == pa) && pd2 == 0) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 147 SDtfs, 758 SDslu, 854 SDs, 0 SdLazy, 1627 SolverSat, 246 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 105 SyntacticMatches, 6 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 155 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 31 NumberOfFragments, 469 HoareAnnotationTreeSize, 6 FomulaSimplifications, 320223 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 6 FomulaSimplificationsInter, 10707 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 319 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 303 ConstructedInterpolants, 4 QuantifiedInterpolants, 73759 SizeOfPredicates, 81 NumberOfNonLiveVariables, 798 ConjunctsInSsa, 260 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 34/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...