/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-19 23:40:39,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:40:39,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:40:39,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:40:39,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:40:39,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:40:39,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:40:39,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:40:39,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:40:39,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:40:39,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:40:39,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:40:39,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:40:40,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:40:40,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:40:40,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:40:40,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:40:40,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:40:40,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:40:40,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:40:40,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:40:40,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:40:40,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:40:40,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:40:40,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:40:40,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:40:40,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:40:40,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:40:40,041 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 [2020-07-19 23:40:40,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:40:40,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:40:40,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:40:40,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:40:40,058 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:40:40,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:40:40,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:40:40,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:40:40,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:40:40,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:40:40,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:40:40,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:40:40,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:40:40,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:40:40,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:40:40,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:40:40,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:40:40,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:40:40,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:40:40,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:40:40,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:40:40,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:40:40,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:40:40,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:40:40,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:40:40,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:40:40,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:40:40,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:40:40,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:40:40,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:40:40,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:40:40,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:40:40,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:40:40,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:40:40,393 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:40:40,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-07-19 23:40:40,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec0d7238/80fd75938b7a4b7ba196d6d830a062c6/FLAG8279399e0 [2020-07-19 23:40:41,028 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:40:41,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-07-19 23:40:41,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec0d7238/80fd75938b7a4b7ba196d6d830a062c6/FLAG8279399e0 [2020-07-19 23:40:41,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec0d7238/80fd75938b7a4b7ba196d6d830a062c6 [2020-07-19 23:40:41,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:40:41,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:40:41,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:40:41,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:40:41,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:40:41,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30afca32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41, skipping insertion in model container [2020-07-19 23:40:41,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:40:41,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:40:41,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:40:41,584 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:40:41,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:40:41,615 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:40:41,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41 WrapperNode [2020-07-19 23:40:41,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:40:41,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:40:41,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:40:41,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:40:41,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (1/1) ... [2020-07-19 23:40:41,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:40:41,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:40:41,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:40:41,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:40:41,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (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 [2020-07-19 23:40:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:40:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:40:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:40:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-07-19 23:40:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:40:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:40:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:40:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-07-19 23:40:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:40:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:40:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:40:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:40:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:40:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:40:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:40:42,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:40:42,153 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:40:42,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:42 BoogieIcfgContainer [2020-07-19 23:40:42,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:40:42,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:40:42,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:40:42,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:40:42,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:40:41" (1/3) ... [2020-07-19 23:40:42,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1822a911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:42, skipping insertion in model container [2020-07-19 23:40:42,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:41" (2/3) ... [2020-07-19 23:40:42,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1822a911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:42, skipping insertion in model container [2020-07-19 23:40:42,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:42" (3/3) ... [2020-07-19 23:40:42,180 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-07-19 23:40:42,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:40:42,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:40:42,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:40:42,244 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:40:42,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:40:42,245 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:40:42,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:40:42,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:40:42,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:40:42,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:40:42,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:40:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-19 23:40:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:40:42,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:42,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:42,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2020-07-19 23:40:42,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:42,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889437765] [2020-07-19 23:40:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3fe43939 [2020-07-19 23:40:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:42,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889437765] [2020-07-19 23:40:42,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:40:42,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 23:40:42,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700400703] [2020-07-19 23:40:42,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 23:40:42,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:40:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 23:40:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:40:42,780 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2020-07-19 23:40:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:43,238 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-19 23:40:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 23:40:43,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-19 23:40:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:43,252 INFO L225 Difference]: With dead ends: 55 [2020-07-19 23:40:43,252 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 23:40:43,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:40:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 23:40:43,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-19 23:40:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 23:40:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-07-19 23:40:43,314 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-07-19 23:40:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:43,316 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-07-19 23:40:43,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 23:40:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-07-19 23:40:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 23:40:43,317 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:43,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:43,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:40:43,318 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:43,319 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2020-07-19 23:40:43,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:43,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198573976] [2020-07-19 23:40:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3fe43939 [2020-07-19 23:40:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:43,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198573976] [2020-07-19 23:40:43,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449409915] [2020-07-19 23:40:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@673384d5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:40:43,760 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@673384d5 issued 4 check-sat command(s) [2020-07-19 23:40:43,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:40:43,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-19 23:40:43,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:40:43,821 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:40:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:43,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:40:43,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2020-07-19 23:40:43,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013712672] [2020-07-19 23:40:43,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 23:40:43,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:40:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 23:40:43,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:40:43,858 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 11 states. [2020-07-19 23:40:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:44,173 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-19 23:40:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:40:44,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-07-19 23:40:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:44,176 INFO L225 Difference]: With dead ends: 36 [2020-07-19 23:40:44,176 INFO L226 Difference]: Without dead ends: 34 [2020-07-19 23:40:44,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-07-19 23:40:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-19 23:40:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-19 23:40:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 23:40:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-19 23:40:44,190 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-07-19 23:40:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:44,190 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-19 23:40:44,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 23:40:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-19 23:40:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-19 23:40:44,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:44,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:44,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:40:44,408 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:44,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2020-07-19 23:40:44,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:44,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759958108] [2020-07-19 23:40:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3fe43939 [2020-07-19 23:40:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:40:44,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:40:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:40:44,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:40:44,591 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:40:44,591 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:40:44,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:40:44,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:40:44 BoogieIcfgContainer [2020-07-19 23:40:44,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:40:44,700 INFO L168 Benchmark]: Toolchain (without parser) took 3375.29 ms. Allocated memory was 135.8 MB in the beginning and 229.6 MB in the end (delta: 93.8 MB). Free memory was 100.3 MB in the beginning and 139.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:44,701 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-19 23:40:44,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.88 ms. Allocated memory is still 135.8 MB. Free memory was 99.8 MB in the beginning and 89.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:44,705 INFO L168 Benchmark]: Boogie Preprocessor took 139.72 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 89.7 MB in the beginning and 179.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:44,708 INFO L168 Benchmark]: RCFGBuilder took 410.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 164.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:44,710 INFO L168 Benchmark]: TraceAbstraction took 2525.59 ms. Allocated memory was 201.3 MB in the beginning and 229.6 MB in the end (delta: 28.3 MB). Free memory was 163.6 MB in the beginning and 139.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:44,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.88 ms. Allocated memory is still 135.8 MB. Free memory was 99.8 MB in the beginning and 89.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.72 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 89.7 MB in the beginning and 179.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 164.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2525.59 ms. Allocated memory was 201.3 MB in the beginning and 229.6 MB in the end (delta: 28.3 MB). Free memory was 163.6 MB in the beginning and 139.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 52.0 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)=32, \old(tmp)=30, 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: 2.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 74 SDslu, 82 SDs, 0 SdLazy, 218 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 4480 SizeOfPredicates, 7 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 18 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...