/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:14:52,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:14:52,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:14:52,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:14:52,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:14:52,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:14:52,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:14:52,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:14:52,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:14:52,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:14:52,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:14:52,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:14:52,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:14:52,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:14:52,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:14:52,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:14:52,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:14:52,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:14:52,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:14:52,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:14:52,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:14:52,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:14:52,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:14:52,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:14:52,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:14:52,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:14:52,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:14:52,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:14:52,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 14:14:52,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:14:52,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:14:52,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:14:52,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:14:52,563 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:14:52,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:14:52,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:14:52,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:14:52,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:14:52,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:14:52,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:14:52,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:14:52,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:14:52,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:14:52,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:14:52,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:14:52,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:14:52,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:14:52,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:14:52,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:14:52,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:14:52,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:14:52,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:14:52,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:14:52,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:14:52,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:14:52,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:52,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:14:52,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:14:52,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 14:14:52,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:14:52,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:14:52,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:14:52,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:14:52,917 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:14:52,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-21 14:14:53,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968bb3467/2500bb99b4704d708556c92dbfef2f4c/FLAG4eed79115 [2020-07-21 14:14:53,443 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:14:53,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-21 14:14:53,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968bb3467/2500bb99b4704d708556c92dbfef2f4c/FLAG4eed79115 [2020-07-21 14:14:53,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968bb3467/2500bb99b4704d708556c92dbfef2f4c [2020-07-21 14:14:53,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:14:53,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:14:53,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:14:53,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:14:53,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:14:53,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:14:53" (1/1) ... [2020-07-21 14:14:53,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2313e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:53, skipping insertion in model container [2020-07-21 14:14:53,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:14:53" (1/1) ... [2020-07-21 14:14:53,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:14:53,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:14:54,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:14:54,115 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:14:54,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:14:54,151 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:14:54,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54 WrapperNode [2020-07-21 14:14:54,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:14:54,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:14:54,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:14:54,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:14:54,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (1/1) ... [2020-07-21 14:14:54,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:14:54,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:14:54,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:14:54,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:14:54,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (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 [2020-07-21 14:14:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:14:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:14:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:14:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:14:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:14:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:14:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:14:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:14:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:14:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:14:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:14:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:14:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:14:54,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:14:54,551 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:14:54,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:14:54 BoogieIcfgContainer [2020-07-21 14:14:54,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:14:54,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:14:54,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:14:54,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:14:54,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:14:53" (1/3) ... [2020-07-21 14:14:54,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235f5032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:14:54, skipping insertion in model container [2020-07-21 14:14:54,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:14:54" (2/3) ... [2020-07-21 14:14:54,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235f5032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:14:54, skipping insertion in model container [2020-07-21 14:14:54,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:14:54" (3/3) ... [2020-07-21 14:14:54,563 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2020-07-21 14:14:54,575 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:14:54,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:14:54,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:14:54,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:14:54,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:14:54,630 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:14:54,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:14:54,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:14:54,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:14:54,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:14:54,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:14:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 14:14:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 14:14:54,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:14:54,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:14:54,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:14:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:14:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1782755915, now seen corresponding path program 1 times [2020-07-21 14:14:54,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:14:54,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301229305] [2020-07-21 14:14:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:54,805 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:14:54,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:14:54,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:14:54,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:14:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:14:54,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:14:54,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301229305] [2020-07-21 14:14:54,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:14:54,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:14:54,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691576555] [2020-07-21 14:14:54,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:14:54,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:14:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:14:54,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:14:54,945 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-07-21 14:14:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:14:55,003 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-21 14:14:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:14:55,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-21 14:14:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:14:55,027 INFO L225 Difference]: With dead ends: 31 [2020-07-21 14:14:55,027 INFO L226 Difference]: Without dead ends: 12 [2020-07-21 14:14:55,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:14:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-21 14:14:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-21 14:14:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-21 14:14:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-21 14:14:55,078 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-21 14:14:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:14:55,079 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-21 14:14:55,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:14:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-21 14:14:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 14:14:55,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:14:55,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:14:55,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:55,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:14:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:14:55,283 INFO L82 PathProgramCache]: Analyzing trace with hash 604679234, now seen corresponding path program 1 times [2020-07-21 14:14:55,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:14:55,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413243052] [2020-07-21 14:14:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:55,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:14:55,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:14:55,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:14:55,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:14:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:14:55,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:14:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:14:55,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413243052] [2020-07-21 14:14:55,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:14:55,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 14:14:55,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898865255] [2020-07-21 14:14:55,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:14:55,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:14:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:14:55,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:14:55,421 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-07-21 14:14:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:14:55,451 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-07-21 14:14:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 14:14:55,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-21 14:14:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:14:55,453 INFO L225 Difference]: With dead ends: 20 [2020-07-21 14:14:55,453 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 14:14:55,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:14:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 14:14:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 14:14:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 14:14:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-21 14:14:55,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-07-21 14:14:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:14:55,461 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-21 14:14:55,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:14:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-21 14:14:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 14:14:55,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:14:55,462 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:14:55,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:55,676 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:14:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:14:55,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1835469045, now seen corresponding path program 2 times [2020-07-21 14:14:55,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:14:55,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556590689] [2020-07-21 14:14:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:55,719 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:14:55,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:14:55,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 14:14:55,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:14:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:14:55,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:14:55,848 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:14:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:14:55,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556590689] [2020-07-21 14:14:55,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:14:55,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-07-21 14:14:55,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118557407] [2020-07-21 14:14:55,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:14:55,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:14:55,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:14:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:14:55,864 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-07-21 14:14:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:14:55,939 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-21 14:14:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 14:14:55,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-07-21 14:14:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:14:55,940 INFO L225 Difference]: With dead ends: 21 [2020-07-21 14:14:55,941 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 14:14:55,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-21 14:14:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 14:14:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 14:14:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 14:14:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-07-21 14:14:55,948 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-07-21 14:14:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:14:55,948 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-07-21 14:14:55,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 14:14:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-21 14:14:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 14:14:55,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:14:55,949 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:14:56,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:56,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:14:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:14:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1100503298, now seen corresponding path program 3 times [2020-07-21 14:14:56,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:14:56,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260700965] [2020-07-21 14:14:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:56,177 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:14:56,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:14:56,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 14:14:56,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:14:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:14:56,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:14:56,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260700965] [2020-07-21 14:14:56,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:14:56,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 14:14:56,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037570731] [2020-07-21 14:14:56,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 14:14:56,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:14:56,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 14:14:56,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:14:56,264 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-07-21 14:14:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:14:56,281 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-07-21 14:14:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 14:14:56,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-07-21 14:14:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:14:56,282 INFO L225 Difference]: With dead ends: 16 [2020-07-21 14:14:56,282 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:14:56,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:14:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:14:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:14:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:14:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:14:56,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-21 14:14:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:14:56,285 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:14:56,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 14:14:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:14:56,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:14:56,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:14:56,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:14:56,690 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-07-21 14:14:56,698 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 14:14:56,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:14:56,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:14:56,698 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:14:56,699 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:14:56,699 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:14:56,699 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:14:56,699 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 14:14:56,699 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:14:56,699 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:14:56,699 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-07-21 14:14:56,700 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-07-21 14:14:56,700 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-21 14:14:56,700 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (or (and (= 10 main_~j~0) (<= main_~i~0 1) (<= 1 main_~i~0)) (and (= 8 main_~j~0) (<= 5 main_~i~0) (< (+ main_~i~0 2) main_~j~0)) (and (<= 7 main_~i~0) (= 7 main_~j~0) (<= main_~i~0 main_~j~0)) (and (<= main_~i~0 3) (<= 3 main_~i~0) (= 9 main_~j~0)) (and (<= 9 main_~i~0) (= 6 main_~j~0))) [2020-07-21 14:14:56,700 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 20) the Hoare annotation is: (= 6 main_~j~0) [2020-07-21 14:14:56,700 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-07-21 14:14:56,701 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 14:14:56,701 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 14:14:56,701 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 14:14:56,701 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 14:14:56,702 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 14:14:56,703 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 14:14:56,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:14:56 BoogieIcfgContainer [2020-07-21 14:14:56,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:14:56,742 INFO L168 Benchmark]: Toolchain (without parser) took 2838.68 ms. Allocated memory was 143.1 MB in the beginning and 230.2 MB in the end (delta: 87.0 MB). Free memory was 100.5 MB in the beginning and 190.0 MB in the end (delta: -89.5 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-07-21 14:14:56,744 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 14:14:56,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.07 ms. Allocated memory is still 143.1 MB. Free memory was 100.1 MB in the beginning and 90.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-21 14:14:56,751 INFO L168 Benchmark]: Boogie Preprocessor took 134.34 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 180.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-21 14:14:56,752 INFO L168 Benchmark]: RCFGBuilder took 267.13 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 167.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-21 14:14:56,753 INFO L168 Benchmark]: TraceAbstraction took 2181.97 ms. Allocated memory was 200.8 MB in the beginning and 230.2 MB in the end (delta: 29.4 MB). Free memory was 167.6 MB in the beginning and 190.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-07-21 14:14:56,768 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.07 ms. Allocated memory is still 143.1 MB. Free memory was 100.1 MB in the beginning and 90.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.34 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 180.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.13 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 167.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2181.97 ms. Allocated memory was 200.8 MB in the beginning and 230.2 MB in the end (delta: 29.4 MB). Free memory was 167.6 MB in the beginning and 190.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((10 == j && i <= 1) && 1 <= i) || ((8 == j && 5 <= i) && i + 2 < j)) || ((7 <= i && 7 == j) && i <= j)) || ((i <= 3 && 3 <= i) && 9 == j)) || (9 <= i && 6 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 1 SDslu, 88 SDs, 0 SdLazy, 76 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 58 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 1885 SizeOfPredicates, 6 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 15/37 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...