/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/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:00:54,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:00:54,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:00:54,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:00:54,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:00:54,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:00:54,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:00:54,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:00:54,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:00:54,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:00:54,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:00:54,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:00:54,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:00:54,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:00:54,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:00:54,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:00:54,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:00:54,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:00:54,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:00:54,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:00:54,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:00:54,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:00:54,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:00:54,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:00:54,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:00:54,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:00:54,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:00:54,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:00:54,886 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 14:00:54,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:00:54,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:00:54,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:00:54,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:00:54,913 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:00:54,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:00:54,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:00:54,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:00:54,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:00:54,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:00:54,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:00:54,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:00:54,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:00:54,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:00:54,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:00:54,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:00:54,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:00:54,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:00:54,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:00:54,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:00:54,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:00:54,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:00:54,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:00:54,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:00:54,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:00:54,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:00:54,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:00:54,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:00:54,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:00:54,920 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 14:00:55,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:00:55,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:00:55,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:00:55,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:00:55,232 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:00:55,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-07-21 14:00:55,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b14b0b8/ce4163e84eab4054bde515e4094e9c5a/FLAG77fc06e3d [2020-07-21 14:00:55,825 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:00:55,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-07-21 14:00:55,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b14b0b8/ce4163e84eab4054bde515e4094e9c5a/FLAG77fc06e3d [2020-07-21 14:00:56,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b14b0b8/ce4163e84eab4054bde515e4094e9c5a [2020-07-21 14:00:56,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:00:56,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:00:56,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:00:56,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:00:56,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:00:56,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6b356d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56, skipping insertion in model container [2020-07-21 14:00:56,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:00:56,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:00:56,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:00:56,384 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:00:56,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:00:56,430 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:00:56,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56 WrapperNode [2020-07-21 14:00:56,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:00:56,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:00:56,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:00:56,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:00:56,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (1/1) ... [2020-07-21 14:00:56,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:00:56,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:00:56,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:00:56,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:00:56,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (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 14:00:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:00:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:00:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:00:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:00:56,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:00:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:00:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:00:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:00:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 14:00:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 14:00:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 14:00:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 14:00:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:00:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:00:56,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:00:56,879 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:00:56,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:00:56 BoogieIcfgContainer [2020-07-21 14:00:56,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:00:56,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:00:56,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:00:56,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:00:56,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:00:56" (1/3) ... [2020-07-21 14:00:56,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2b600f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:00:56, skipping insertion in model container [2020-07-21 14:00:56,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:00:56" (2/3) ... [2020-07-21 14:00:56,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2b600f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:00:56, skipping insertion in model container [2020-07-21 14:00:56,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:00:56" (3/3) ... [2020-07-21 14:00:56,895 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-07-21 14:00:56,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:00:56,927 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:00:56,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:00:56,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:00:56,983 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:00:56,983 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:00:56,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:00:56,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:00:56,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:00:56,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:00:56,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:00:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-21 14:00:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:00:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:00:57,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:00:57,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:00:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:00:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-07-21 14:00:57,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:00:57,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328034104] [2020-07-21 14:00:57,051 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 14:00:57,170 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:00:57,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:00:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:00:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:00:57,202 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 14:00:57,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:00:57,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328034104] [2020-07-21 14:00:57,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:00:57,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:00:57,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298763124] [2020-07-21 14:00:57,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:00:57,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:00:57,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:00:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:00:57,232 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-21 14:00:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:00:57,255 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-21 14:00:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:00:57,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 14:00:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:00:57,265 INFO L225 Difference]: With dead ends: 35 [2020-07-21 14:00:57,265 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 14:00:57,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:00:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 14:00:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 14:00:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 14:00:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 14:00:57,311 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-21 14:00:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:00:57,311 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 14:00:57,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:00:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 14:00:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:00:57,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:00:57,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:00:57,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:00:57,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:00:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:00:57,530 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-07-21 14:00:57,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:00:57,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144828589] [2020-07-21 14:00:57,532 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 14:00:57,589 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:00:57,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:00:57,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:00:57,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:00:57,636 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 14:00:57,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:00:57,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144828589] [2020-07-21 14:00:57,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:00:57,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:00:57,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587496330] [2020-07-21 14:00:57,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:00:57,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:00:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:00:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:00:57,640 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2020-07-21 14:00:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:00:57,695 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-21 14:00:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:00:57,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-21 14:00:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:00:57,698 INFO L225 Difference]: With dead ends: 24 [2020-07-21 14:00:57,698 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 14:00:57,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 14:00:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 14:00:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-21 14:00:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 14:00:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-21 14:00:57,712 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-07-21 14:00:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:00:57,714 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-21 14:00:57,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:00:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-21 14:00:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 14:00:57,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:00:57,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:00:57,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:00:57,933 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:00:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:00:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-07-21 14:00:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:00:57,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219612099] [2020-07-21 14:00:57,936 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 14:00:58,009 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:00:58,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:00:58,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 14:00:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:00:58,070 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-21 14:00:58,070 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,094 INFO L624 ElimStorePlain]: treesize reduction 5, result has 80.8 percent of original size [2020-07-21 14:00:58,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-07-21 14:00:58,115 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,125 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:58,127 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,127 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:3 [2020-07-21 14:00:58,146 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 14:00:58,148 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,151 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:58,151 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-21 14:00:58,163 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:00:58,187 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 14:00:58,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:00:58,210 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,305 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 14:00:58,306 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,316 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2020-07-21 14:00:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:58,328 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:00:58,330 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:00:58,342 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:00:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:58,347 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:00:58,362 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:58,363 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2020-07-21 14:00:58,366 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,368 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,378 INFO L624 ElimStorePlain]: treesize reduction 10, result has 47.4 percent of original size [2020-07-21 14:00:58,379 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,387 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2020-07-21 14:00:58,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:58,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:58,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:58,423 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,425 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:58,426 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,475 INFO L624 ElimStorePlain]: treesize reduction 139, result has 30.8 percent of original size [2020-07-21 14:00:58,481 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2020-07-21 14:00:58,496 INFO L350 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2020-07-21 14:00:58,497 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 114 [2020-07-21 14:00:58,499 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,501 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:58,504 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2020-07-21 14:00:58,508 INFO L624 ElimStorePlain]: treesize reduction 27, result has 3.6 percent of original size [2020-07-21 14:00:58,509 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,525 INFO L624 ElimStorePlain]: treesize reduction 12, result has 42.9 percent of original size [2020-07-21 14:00:58,526 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 14:00:58,527 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 8 variables, input treesize:367, output treesize:9 [2020-07-21 14:00:58,552 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 14:00:58,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219612099] [2020-07-21 14:00:58,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:00:58,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2020-07-21 14:00:58,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655912683] [2020-07-21 14:00:58,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:00:58,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:00:58,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:00:58,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:00:58,555 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2020-07-21 14:00:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:00:58,665 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-07-21 14:00:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 14:00:58,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-07-21 14:00:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:00:58,667 INFO L225 Difference]: With dead ends: 26 [2020-07-21 14:00:58,667 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 14:00:58,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:00:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 14:00:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-21 14:00:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 14:00:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-21 14:00:58,673 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-07-21 14:00:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:00:58,673 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-21 14:00:58,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 14:00:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-21 14:00:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 14:00:58,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:00:58,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:00:58,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:00:58,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:00:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:00:58,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-07-21 14:00:58,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:00:58,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498565274] [2020-07-21 14:00:58,889 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 14:00:58,936 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:00:58,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:00:58,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:00:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:00:58,955 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 14:00:58,955 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,969 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:58,970 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2020-07-21 14:00:58,992 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-21 14:00:58,994 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,996 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:58,997 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:58,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-07-21 14:00:59,010 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:00:59,035 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 14:00:59,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:00:59,059 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:59,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:59,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:59,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:59,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:59,128 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 14:00:59,128 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,135 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2020-07-21 14:00:59,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:59,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:59,149 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2020-07-21 14:00:59,150 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,153 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:59,153 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,158 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 14:00:59,158 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,163 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2020-07-21 14:00:59,166 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:00:59,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:59,170 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:00:59,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:00:59,175 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-07-21 14:00:59,175 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,177 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:59,178 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,192 INFO L624 ElimStorePlain]: treesize reduction 25, result has 26.5 percent of original size [2020-07-21 14:00:59,193 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 14:00:59,193 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:203, output treesize:9 [2020-07-21 14:00:59,218 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 14:00:59,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498565274] [2020-07-21 14:00:59,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:00:59,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 14:00:59,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097615575] [2020-07-21 14:00:59,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 14:00:59,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:00:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 14:00:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:00:59,222 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 12 states. [2020-07-21 14:00:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:00:59,401 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-21 14:00:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 14:00:59,402 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-07-21 14:00:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:00:59,403 INFO L225 Difference]: With dead ends: 27 [2020-07-21 14:00:59,404 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 14:00:59,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-07-21 14:00:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 14:00:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-07-21 14:00:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 14:00:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-21 14:00:59,411 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-07-21 14:00:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:00:59,411 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-21 14:00:59,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 14:00:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-21 14:00:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 14:00:59,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:00:59,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:00:59,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:00:59,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:00:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:00:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2070630979, now seen corresponding path program 2 times [2020-07-21 14:00:59,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:00:59,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603129351] [2020-07-21 14:00:59,629 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:00:59,689 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:00:59,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:00:59,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:00:59,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:00:59,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-21 14:00:59,717 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,736 INFO L624 ElimStorePlain]: treesize reduction 5, result has 82.1 percent of original size [2020-07-21 14:00:59,740 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-07-21 14:00:59,740 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,747 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:59,748 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,749 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-07-21 14:00:59,757 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:00:59,815 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:00:59,816 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-07-21 14:00:59,818 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:00:59,820 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:00:59,821 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 14:00:59,838 INFO L624 ElimStorePlain]: treesize reduction 16, result has 36.0 percent of original size [2020-07-21 14:00:59,841 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:00:59,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2020-07-21 14:00:59,856 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:00:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:00:59,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:00:59,910 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:00:59,930 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,006 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,009 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,043 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2020-07-21 14:01:00,047 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:01:00,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:01:00,053 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 14:01:00,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 14:01:00,062 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-07-21 14:01:00,063 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 14:01:00,066 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:01:00,066 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:01:00,071 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 14:01:00,072 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 14:01:00,077 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 14:01:00,077 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 14:01:00,082 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2020-07-21 14:01:00,104 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:01:00,104 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 118 [2020-07-21 14:01:00,107 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,111 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 14:01:00,112 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,114 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:01:00,121 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 3 xjuncts. [2020-07-21 14:01:00,147 INFO L624 ElimStorePlain]: treesize reduction 105, result has 7.9 percent of original size [2020-07-21 14:01:00,150 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:01:00,174 INFO L624 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-07-21 14:01:00,175 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 14:01:00,176 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:233, output treesize:18 [2020-07-21 14:01:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:01:00,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603129351] [2020-07-21 14:01:00,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:01:00,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-07-21 14:01:00,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816267881] [2020-07-21 14:01:00,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 14:01:00,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:01:00,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 14:01:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-21 14:01:00,230 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 11 states. [2020-07-21 14:01:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:01:00,427 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-21 14:01:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 14:01:00,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-07-21 14:01:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:01:00,431 INFO L225 Difference]: With dead ends: 29 [2020-07-21 14:01:00,432 INFO L226 Difference]: Without dead ends: 23 [2020-07-21 14:01:00,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-07-21 14:01:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-21 14:01:00,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-07-21 14:01:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 14:01:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-21 14:01:00,440 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2020-07-21 14:01:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:01:00,441 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-21 14:01:00,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 14:01:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-21 14:01:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 14:01:00,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:01:00,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:01:00,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:00,659 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:01:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:01:00,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1414989691, now seen corresponding path program 1 times [2020-07-21 14:01:00,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:01:00,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947050637] [2020-07-21 14:01:00,661 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:00,699 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:01:00,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:01:00,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:01:00,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:01:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:01:00,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:01:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:01:00,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947050637] [2020-07-21 14:01:00,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:01:00,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 14:01:00,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346825624] [2020-07-21 14:01:00,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:01:00,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:01:00,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:01:00,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:01:00,770 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-07-21 14:01:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:01:00,790 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-21 14:01:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:01:00,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 14:01:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:01:00,792 INFO L225 Difference]: With dead ends: 21 [2020-07-21 14:01:00,792 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:01:00,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:01:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:01:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:01:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:01:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:01:00,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-21 14:01:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:01:00,795 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:01:00,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:01:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:01:00,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:01:01,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:01,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:01:01,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:01:01,164 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:01:01,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:01:01,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:01:01,165 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:01:01,165 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:01:01,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:01:01,165 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2020-07-21 14:01:01,165 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (<= main_~menor~0 |main_#t~mem5|)) [2020-07-21 14:01:01,165 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-21 14:01:01,166 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-21 14:01:01,166 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-07-21 14:01:01,166 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-07-21 14:01:01,166 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 24) the Hoare annotation is: (let ((.cse0 (= 1 main_~SIZE~0))) (or (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) .cse0 (= 1 main_~j~0)) (and .cse0 (= 0 main_~j~0)))) [2020-07-21 14:01:01,166 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-07-21 14:01:01,167 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-21 14:01:01,167 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-21 14:01:01,167 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-21 14:01:01,167 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 14:01:01,167 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-21 14:01:01,167 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-21 14:01:01,167 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-21 14:01:01,179 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 14:01:01,186 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 14:01:01,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:01:01 BoogieIcfgContainer [2020-07-21 14:01:01,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:01:01,193 INFO L168 Benchmark]: Toolchain (without parser) took 5044.83 ms. Allocated memory was 142.6 MB in the beginning and 245.4 MB in the end (delta: 102.8 MB). Free memory was 103.1 MB in the beginning and 146.3 MB in the end (delta: -43.2 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-07-21 14:01:01,198 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 14:01:01,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.30 ms. Allocated memory is still 142.6 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 14:01:01,203 INFO L168 Benchmark]: Boogie Preprocessor took 131.93 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 92.7 MB in the beginning and 180.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-21 14:01:01,206 INFO L168 Benchmark]: RCFGBuilder took 320.66 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 166.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:01:01,207 INFO L168 Benchmark]: TraceAbstraction took 4302.82 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 165.5 MB in the beginning and 146.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:01:01,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.30 ms. Allocated memory is still 142.6 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.93 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 92.7 MB in the beginning and 180.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 320.66 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 166.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4302.82 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 165.5 MB in the beginning and 146.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 19]: Loop Invariant [2020-07-21 14:01:01,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-21 14:01:01,228 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((menor <= unknown-#memory_int-unknown[array][array] && 1 == SIZE) && 1 == j) || (1 == SIZE && 0 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 23 SDslu, 212 SDs, 0 SdLazy, 197 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 112 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 38 HoareAnnotationTreeSize, 12 FomulaSimplifications, 49 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 146 ConstructedInterpolants, 7 QuantifiedInterpolants, 9795 SizeOfPredicates, 37 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 10/24 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...