/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-regression/test_malloc-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:12:47,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:12:47,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:12:47,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:12:47,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:12:47,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:12:47,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:12:47,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:12:47,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:12:47,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:12:47,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:12:47,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:12:47,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:12:47,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:12:47,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:12:47,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:12:47,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:12:47,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:12:47,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:12:47,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:12:47,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:12:47,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:12:47,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:12:47,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:12:47,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:12:47,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:12:47,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:12:47,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:12:47,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:12:47,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:12:47,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:12:47,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:12:47,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:12:47,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:12:47,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:12:47,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:12:47,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:12:47,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:12:47,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:12:47,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:12:47,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:12:47,680 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:12:47,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:12:47,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:12:47,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:12:47,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:12:47,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:12:47,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:12:47,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:12:47,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:12:47,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:12:47,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:12:47,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:12:47,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:12:47,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:12:47,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:12:47,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:12:47,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:12:47,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:12:47,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:12:47,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:12:47,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:12:47,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:12:48,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:12:48,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:12:48,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:12:48,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:12:48,235 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:12:48,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_malloc-2.i [2021-01-06 16:12:48,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0510bb41b/32e8897dc10f487b89db232d7d19eac4/FLAG5800df067 [2021-01-06 16:12:49,022 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:12:49,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_malloc-2.i [2021-01-06 16:12:49,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0510bb41b/32e8897dc10f487b89db232d7d19eac4/FLAG5800df067 [2021-01-06 16:12:49,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0510bb41b/32e8897dc10f487b89db232d7d19eac4 [2021-01-06 16:12:49,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:12:49,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:12:49,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:12:49,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:12:49,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:12:49,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0a9c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49, skipping insertion in model container [2021-01-06 16:12:49,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:12:49,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:12:49,566 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_malloc-2.i[813,826] [2021-01-06 16:12:49,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:12:49,704 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:12:49,719 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_malloc-2.i[813,826] [2021-01-06 16:12:49,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:12:49,835 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:12:49,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49 WrapperNode [2021-01-06 16:12:49,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:12:49,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:12:49,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:12:49,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:12:49,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:12:49,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:12:49,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:12:49,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:12:49,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... [2021-01-06 16:12:49,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:12:49,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:12:49,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:12:49,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:12:49,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:12:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:12:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:12:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:12:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:12:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:12:50,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:12:50,280 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-06 16:12:50,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:50 BoogieIcfgContainer [2021-01-06 16:12:50,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:12:50,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:12:50,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:12:50,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:12:50,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:12:49" (1/3) ... [2021-01-06 16:12:50,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1107d70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:12:50, skipping insertion in model container [2021-01-06 16:12:50,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:12:49" (2/3) ... [2021-01-06 16:12:50,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1107d70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:12:50, skipping insertion in model container [2021-01-06 16:12:50,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:50" (3/3) ... [2021-01-06 16:12:50,292 INFO L111 eAbstractionObserver]: Analyzing ICFG test_malloc-2.i [2021-01-06 16:12:50,300 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:12:50,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:12:50,327 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:12:50,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:12:50,357 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:12:50,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:12:50,358 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:12:50,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:12:50,358 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:12:50,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:12:50,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:12:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2021-01-06 16:12:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-06 16:12:50,404 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:12:50,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-06 16:12:50,405 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:12:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:12:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2021-01-06 16:12:50,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:12:50,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329167436] [2021-01-06 16:12:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:12:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:12:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:12:50,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329167436] [2021-01-06 16:12:50,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:12:50,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:12:50,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438112156] [2021-01-06 16:12:50,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:12:50,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:12:50,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:12:50,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:12:50,778 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2021-01-06 16:12:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:12:50,817 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-01-06 16:12:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:12:50,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-01-06 16:12:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:12:50,826 INFO L225 Difference]: With dead ends: 18 [2021-01-06 16:12:50,827 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:12:50,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:12:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:12:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:12:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:12:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:12:50,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-01-06 16:12:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:12:50,857 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:12:50,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:12:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:12:50,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:12:50,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:12:50,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:12:50,883 INFO L185 CegarLoopUtils]: At program point L386-1(lines 386 388) the Hoare annotation is: (not (= ULTIMATE.start_main_~p1~0.base ULTIMATE.start_main_~p2~0.base)) [2021-01-06 16:12:50,883 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:12:50,883 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:12:50,883 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:12:50,883 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:12:50,884 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-01-06 16:12:50,884 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-01-06 16:12:50,884 INFO L189 CegarLoopUtils]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-01-06 16:12:50,884 INFO L185 CegarLoopUtils]: At program point L389(lines 382 390) the Hoare annotation is: (not (= ULTIMATE.start_main_~p1~0.base ULTIMATE.start_main_~p2~0.base)) [2021-01-06 16:12:50,884 INFO L189 CegarLoopUtils]: For program point L386(lines 386 388) no Hoare annotation was computed. [2021-01-06 16:12:50,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:12:50 BoogieIcfgContainer [2021-01-06 16:12:50,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:12:50,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:12:50,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:12:50,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:12:50,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:12:50" (3/4) ... [2021-01-06 16:12:50,917 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:12:50,930 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 16:12:50,930 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 16:12:50,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:12:50,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:12:50,988 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-regression/test_malloc-2.i-witness.graphml [2021-01-06 16:12:50,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:12:50,997 INFO L168 Benchmark]: Toolchain (without parser) took 1666.36 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 114.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:50,998 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:12:50,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.42 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 104.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:51,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.30 ms. Allocated memory is still 152.0 MB. Free memory was 104.4 MB in the beginning and 102.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:51,000 INFO L168 Benchmark]: Boogie Preprocessor took 24.21 ms. Allocated memory is still 152.0 MB. Free memory was 102.7 MB in the beginning and 101.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:51,001 INFO L168 Benchmark]: RCFGBuilder took 349.26 ms. Allocated memory is still 152.0 MB. Free memory was 101.7 MB in the beginning and 87.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:51,002 INFO L168 Benchmark]: TraceAbstraction took 624.49 ms. Allocated memory is still 152.0 MB. Free memory was 87.5 MB in the beginning and 116.9 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:12:51,003 INFO L168 Benchmark]: Witness Printer took 76.26 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:12:51,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 507.42 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 104.4 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.30 ms. Allocated memory is still 152.0 MB. Free memory was 104.4 MB in the beginning and 102.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.21 ms. Allocated memory is still 152.0 MB. Free memory was 102.7 MB in the beginning and 101.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.26 ms. Allocated memory is still 152.0 MB. Free memory was 101.7 MB in the beginning and 87.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 624.49 ms. Allocated memory is still 152.0 MB. Free memory was 87.5 MB in the beginning and 116.9 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 76.26 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 386]: Loop Invariant Derived loop invariant: !(p1 == p2) - InvariantResult [Line: 382]: Loop Invariant Derived loop invariant: !(p1 == p2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 10 SDslu, 6 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...