/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_VARIABLES --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 16:58:16,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:58:16,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:58:16,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:58:16,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:58:16,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:58:16,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:58:16,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:58:16,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:58:16,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:58:16,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:58:16,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:58:16,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:58:16,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:58:16,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:58:16,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:58:16,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:58:16,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:58:16,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:58:16,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:58:16,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:58:16,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:58:16,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:58:16,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:58:16,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:58:16,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:58:16,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:58:16,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:58:16,910 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 16:58:16,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:58:16,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:58:16,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:58:16,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:58:16,953 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:58:16,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:58:16,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:58:16,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:58:16,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:58:16,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:58:16,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:58:16,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:58:16,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:58:16,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:58:16,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:58:16,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:58:16,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:58:16,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:58:16,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:58:16,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:58:16,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:58:16,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:58:16,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:58:16,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:58:16,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:58:16,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:58:16,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:58:16,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:58:16,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:58:16,959 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_VARIABLES 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 16:58:17,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:58:17,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:58:17,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:58:17,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:58:17,293 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:58:17,296 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-21 16:58:17,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ab90ba5/c38f8be516a14ac3a1f7dad24f001b8f/FLAG2909c10c3 [2020-07-21 16:58:17,851 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:58:17,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-21 16:58:17,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ab90ba5/c38f8be516a14ac3a1f7dad24f001b8f/FLAG2909c10c3 [2020-07-21 16:58:18,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ab90ba5/c38f8be516a14ac3a1f7dad24f001b8f [2020-07-21 16:58:18,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:58:18,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:58:18,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:58:18,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:58:18,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:58:18,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7e7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18, skipping insertion in model container [2020-07-21 16:58:18,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:58:18,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:58:18,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:58:18,401 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:58:18,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:58:18,432 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:58:18,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18 WrapperNode [2020-07-21 16:58:18,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:58:18,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:58:18,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:58:18,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:58:18,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (1/1) ... [2020-07-21 16:58:18,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:58:18,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:58:18,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:58:18,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:58:18,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (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 16:58:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:58:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:58:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:58:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:58:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:58:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:58:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:58:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:58:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:58:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:58:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:58:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:58:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:58:18,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:58:18,777 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:58:18,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:58:18 BoogieIcfgContainer [2020-07-21 16:58:18,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:58:18,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:58:18,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:58:18,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:58:18,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:58:18" (1/3) ... [2020-07-21 16:58:18,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15301cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:58:18, skipping insertion in model container [2020-07-21 16:58:18,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:58:18" (2/3) ... [2020-07-21 16:58:18,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15301cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:58:18, skipping insertion in model container [2020-07-21 16:58:18,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:58:18" (3/3) ... [2020-07-21 16:58:18,789 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2020-07-21 16:58:18,800 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:58:18,808 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:58:18,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:58:18,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:58:18,846 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:58:18,846 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:58:18,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:58:18,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:58:18,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:58:18,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:58:18,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:58:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 16:58:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:58:18,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:58:18,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:58:18,875 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:58:18,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:58:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1782755915, now seen corresponding path program 1 times [2020-07-21 16:58:18,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:58:18,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106599795] [2020-07-21 16:58:18,892 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 16:58:18,953 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:58:18,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:58:18,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:58:18,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:58:19,028 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 16:58:19,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:58:19,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106599795] [2020-07-21 16:58:19,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:58:19,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:58:19,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374925165] [2020-07-21 16:58:19,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:58:19,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:58:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:58:19,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:58:19,065 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-07-21 16:58:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:58:19,107 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-21 16:58:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:58:19,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-21 16:58:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:58:19,120 INFO L225 Difference]: With dead ends: 31 [2020-07-21 16:58:19,120 INFO L226 Difference]: Without dead ends: 12 [2020-07-21 16:58:19,123 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 16:58:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-21 16:58:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-21 16:58:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-21 16:58:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-21 16:58:19,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-21 16:58:19,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:58:19,167 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-21 16:58:19,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:58:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-21 16:58:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 16:58:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:58:19,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:58:19,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:58:19,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:58:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:58:19,384 INFO L82 PathProgramCache]: Analyzing trace with hash 604679234, now seen corresponding path program 1 times [2020-07-21 16:58:19,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:58:19,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020888279] [2020-07-21 16:58:19,385 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 16:58:19,412 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:58:19,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:58:19,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:58:19,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:58:19,481 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 16:58:19,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:58:19,530 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 16:58:19,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020888279] [2020-07-21 16:58:19,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:58:19,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 16:58:19,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135772068] [2020-07-21 16:58:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:58:19,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:58:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:58:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:58:19,536 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-07-21 16:58:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:58:19,563 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-07-21 16:58:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:58:19,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-21 16:58:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:58:19,565 INFO L225 Difference]: With dead ends: 20 [2020-07-21 16:58:19,566 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 16:58:19,567 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 16:58:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 16:58:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 16:58:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 16:58:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-21 16:58:19,573 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-07-21 16:58:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:58:19,573 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-21 16:58:19,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:58:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-21 16:58:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 16:58:19,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:58:19,575 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:58:19,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:58:19,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:58:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:58:19,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1835469045, now seen corresponding path program 2 times [2020-07-21 16:58:19,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:58:19,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656706752] [2020-07-21 16:58:19,788 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 16:58:19,821 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:58:19,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:58:19,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 16:58:19,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:58:19,903 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 16:58:19,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:58:19,939 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:58:19,952 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 16:58:19,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656706752] [2020-07-21 16:58:19,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:58:19,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-07-21 16:58:19,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281186750] [2020-07-21 16:58:19,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 16:58:19,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:58:19,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 16:58:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:58:19,955 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-07-21 16:58:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:58:20,032 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-21 16:58:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 16:58:20,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-07-21 16:58:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:58:20,034 INFO L225 Difference]: With dead ends: 21 [2020-07-21 16:58:20,035 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 16:58:20,036 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 16:58:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 16:58:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 16:58:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 16:58:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-07-21 16:58:20,041 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-07-21 16:58:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:58:20,042 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-07-21 16:58:20,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 16:58:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-21 16:58:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 16:58:20,043 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:58:20,043 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:58:20,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:58:20,245 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:58:20,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:58:20,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1100503298, now seen corresponding path program 3 times [2020-07-21 16:58:20,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:58:20,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114396423] [2020-07-21 16:58:20,247 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 16:58:20,276 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:58:20,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:58:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:58:20,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:58:20,360 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 16:58:20,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:58:20,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114396423] [2020-07-21 16:58:20,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:58:20,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 16:58:20,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787285048] [2020-07-21 16:58:20,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:58:20,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:58:20,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:58:20,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:58:20,364 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-07-21 16:58:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:58:20,381 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-07-21 16:58:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:58:20,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-07-21 16:58:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:58:20,382 INFO L225 Difference]: With dead ends: 16 [2020-07-21 16:58:20,382 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:58:20,383 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 16:58:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:58:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:58:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:58:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:58:20,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-21 16:58:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:58:20,385 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:58:20,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:58:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:58:20,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:58:20,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:58:20,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:58:20,781 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 16:58:20,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:58:20,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:58:20,782 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:58:20,782 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:58:20,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:58:20,782 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 16:58:20,782 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 16:58:20,783 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 16:58:20,783 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 16:58:20,783 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-07-21 16:58:20,783 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-07-21 16:58:20,783 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-21 16:58:20,784 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 16:58:20,784 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 20) the Hoare annotation is: (= 6 main_~j~0) [2020-07-21 16:58:20,784 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-07-21 16:58:20,784 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 16:58:20,784 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 16:58:20,784 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 16:58:20,784 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 16:58:20,785 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 16:58:20,785 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 16:58:20,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:58:20 BoogieIcfgContainer [2020-07-21 16:58:20,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:58:20,806 INFO L168 Benchmark]: Toolchain (without parser) took 2598.00 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 103.4 MB in the beginning and 194.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:58:20,807 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:58:20,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.82 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:58:20,809 INFO L168 Benchmark]: Boogie Preprocessor took 27.59 ms. Allocated memory is still 138.4 MB. Free memory was 93.7 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:58:20,810 INFO L168 Benchmark]: RCFGBuilder took 319.24 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 170.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:58:20,815 INFO L168 Benchmark]: TraceAbstraction took 2021.39 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.9 MB in the beginning and 194.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:58:20,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.82 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.59 ms. Allocated memory is still 138.4 MB. Free memory was 93.7 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.24 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 170.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2021.39 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.9 MB in the beginning and 194.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 87.4 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: 1.7s, 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, 117 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...