/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 DAGSIZE --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/verisec_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:20:37,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:20:37,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:20:37,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:20:37,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:20:37,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:20:37,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:20:37,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:20:37,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:20:37,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:20:37,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:20:37,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:20:37,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:20:37,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:20:37,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:20:37,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:20:37,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:20:37,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:20:37,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:20:37,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:20:37,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:20:37,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:20:37,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:20:37,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:20:37,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:20:37,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:20:37,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:20:37,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:20:37,984 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 20:20:38,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:20:38,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:20:38,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:20:38,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:20:38,015 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:20:38,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:20:38,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:20:38,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:20:38,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:20:38,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:20:38,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:20:38,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:20:38,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:20:38,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:20:38,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:20:38,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:20:38,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:20:38,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:20:38,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:20:38,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:20:38,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:20:38,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:20:38,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:20:38,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:20:38,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:20:38,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:20:38,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:38,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:20:38,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:20:38,023 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 -> DAGSIZE 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 20:20:38,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:20:38,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:20:38,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:20:38,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:20:38,408 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:20:38,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-07-21 20:20:38,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5fe1dd7b/b1b0674581144960854d222c8baa606c/FLAGf4a96e495 [2020-07-21 20:20:39,079 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:20:39,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-07-21 20:20:39,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5fe1dd7b/b1b0674581144960854d222c8baa606c/FLAGf4a96e495 [2020-07-21 20:20:39,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5fe1dd7b/b1b0674581144960854d222c8baa606c [2020-07-21 20:20:39,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:20:39,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:20:39,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:20:39,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:20:39,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:20:39,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ef340b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39, skipping insertion in model container [2020-07-21 20:20:39,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:20:39,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:20:39,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:20:39,743 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:20:39,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:20:39,782 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:20:39,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39 WrapperNode [2020-07-21 20:20:39,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:20:39,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:20:39,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:20:39,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:20:39,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (1/1) ... [2020-07-21 20:20:39,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:20:39,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:20:39,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:20:39,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:20:39,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (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 20:20:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:20:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:20:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:20:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-07-21 20:20:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:20:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:20:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:20:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-07-21 20:20:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 20:20:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:20:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 20:20:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:20:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:20:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:20:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 20:20:40,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:20:40,416 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:20:40,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:20:40 BoogieIcfgContainer [2020-07-21 20:20:40,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:20:40,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:20:40,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:20:40,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:20:40,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:20:39" (1/3) ... [2020-07-21 20:20:40,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797b2e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:20:40, skipping insertion in model container [2020-07-21 20:20:40,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:20:39" (2/3) ... [2020-07-21 20:20:40,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797b2e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:20:40, skipping insertion in model container [2020-07-21 20:20:40,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:20:40" (3/3) ... [2020-07-21 20:20:40,433 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-07-21 20:20:40,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:20:40,458 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:20:40,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:20:40,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:20:40,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:20:40,511 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:20:40,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:20:40,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:20:40,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:20:40,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:20:40,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:20:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-21 20:20:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 20:20:40,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:20:40,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:20:40,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:20:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:20:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2020-07-21 20:20:40,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:20:40,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291993126] [2020-07-21 20:20:40,566 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 20:20:40,700 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:20:40,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:20:40,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 20:20:40,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:20:40,857 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:20:40,913 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 20:20:40,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:20:40,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291993126] [2020-07-21 20:20:40,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:20:40,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 20:20:40,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417526119] [2020-07-21 20:20:40,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 20:20:40,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:20:40,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 20:20:40,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:20:40,943 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-07-21 20:20:41,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:20:41,182 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-21 20:20:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:20:41,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-21 20:20:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:20:41,198 INFO L225 Difference]: With dead ends: 55 [2020-07-21 20:20:41,198 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 20:20:41,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:20:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 20:20:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-21 20:20:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 20:20:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-07-21 20:20:41,260 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-07-21 20:20:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:20:41,261 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-07-21 20:20:41,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 20:20:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-07-21 20:20:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 20:20:41,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:20:41,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:20:41,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:41,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:20:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:20:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2020-07-21 20:20:41,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:20:41,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482625261] [2020-07-21 20:20:41,480 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 20:20:41,550 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:20:41,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:20:41,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 20:20:41,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:20:41,638 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:20:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:20:41,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:20:41,699 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:20:41,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:20:41,729 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:20:41,740 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:20:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:20:41,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482625261] [2020-07-21 20:20:41,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:20:41,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-07-21 20:20:41,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674829691] [2020-07-21 20:20:41,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 20:20:41,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:20:41,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 20:20:41,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-21 20:20:41,764 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2020-07-21 20:20:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:20:41,915 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-21 20:20:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 20:20:41,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-07-21 20:20:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:20:41,918 INFO L225 Difference]: With dead ends: 36 [2020-07-21 20:20:41,918 INFO L226 Difference]: Without dead ends: 34 [2020-07-21 20:20:41,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 20:20:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-21 20:20:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-21 20:20:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 20:20:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-21 20:20:41,929 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-07-21 20:20:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:20:41,930 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-21 20:20:41,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 20:20:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-21 20:20:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 20:20:41,932 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:20:41,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:20:42,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:42,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:20:42,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:20:42,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2020-07-21 20:20:42,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:20:42,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859940645] [2020-07-21 20:20:42,150 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 20:20:42,213 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:20:42,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:20:42,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:20:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:20:42,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:20:42,263 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:20:42,263 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:20:42,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:20:42,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:20:42 BoogieIcfgContainer [2020-07-21 20:20:42,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:20:42,539 INFO L168 Benchmark]: Toolchain (without parser) took 3095.95 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 103.0 MB in the beginning and 175.0 MB in the end (delta: -72.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:42,539 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 20:20:42,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.17 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 92.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:42,541 INFO L168 Benchmark]: Boogie Preprocessor took 133.23 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 178.9 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:42,542 INFO L168 Benchmark]: RCFGBuilder took 504.53 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 163.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:42,544 INFO L168 Benchmark]: TraceAbstraction took 2112.29 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 163.8 MB in the beginning and 175.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:20:42,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.17 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 92.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.23 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 178.9 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.53 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 163.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2112.29 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 163.8 MB in the beginning and 175.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; VAL [\old(tmp)=7, \old(tmp)=5, tmp={0:0}] [L29] Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 VAL [\old(tmp)=0, \old(tmp)=0, bound={2:28}, pathbuf={2:0}, tmp={2:4}] [L35] CALL glob2 (pathbuf, bound) VAL [\old(tmp)=0, \old(tmp)=0, pathbuf={2:0}, pathlim={2:28}, tmp={2:4}] [L16] Char *p; [L18] p = pathbuf VAL [\old(tmp)=0, \old(tmp)=0, p={2:0}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={2:0}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={2:4}] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={2:4}] [L20] RET __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={2:0}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L21] *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={2:0}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={2:4}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={2:4}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={2:4}] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={2:4}] [L20] RET __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={2:4}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L21] *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={2:4}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={2:8}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={2:8}, pathbuf={2:0}, pathbuf={2:0}, pathlim={2:28}, pathlim={2:28}, tmp={2:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, tmp={2:4}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={2:4}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={2:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 36 SDslu, 118 SDs, 0 SdLazy, 127 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 3936 SizeOfPredicates, 14 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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 incorrect! Received shutdown request...