/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/relax-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:02:37,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:02:37,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:02:37,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:02:37,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:02:37,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:02:37,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:02:37,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:02:37,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:02:37,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:02:37,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:02:37,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:02:37,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:02:37,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:02:37,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:02:37,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:02:37,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:02:37,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:02:37,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:02:37,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:02:37,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:02:37,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:02:37,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:02:37,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:02:37,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:02:37,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:02:37,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:02:37,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:02:37,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:02:37,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:02:37,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:02:37,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:02:37,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:02:37,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:02:37,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:02:37,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:02:37,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:02:37,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:02:37,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:02:37,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:02:37,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:02:37,853 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:02:37,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:02:37,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:02:37,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:02:37,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:02:37,855 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:02:37,858 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:02:37,858 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:02:37,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:02:37,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:02:37,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:02:37,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:02:37,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:02:37,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:02:37,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:02:37,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:02:37,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:02:37,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:02:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:02:37,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:02:37,862 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:02:38,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:02:38,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:02:38,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:02:38,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:02:38,331 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:02:38,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/relax-1.i [2020-12-22 19:02:38,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbfd380b/296555daae6245efa1df48689d80bc02/FLAG8f3447b00 [2020-12-22 19:02:39,149 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:02:39,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/relax-1.i [2020-12-22 19:02:39,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbfd380b/296555daae6245efa1df48689d80bc02/FLAG8f3447b00 [2020-12-22 19:02:39,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbfd380b/296555daae6245efa1df48689d80bc02 [2020-12-22 19:02:39,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:02:39,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:02:39,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:02:39,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:02:39,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:02:39,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:02:39" (1/1) ... [2020-12-22 19:02:39,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5426a0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:39, skipping insertion in model container [2020-12-22 19:02:39,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:02:39" (1/1) ... [2020-12-22 19:02:39,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:02:39,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:02:39,744 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2020-12-22 19:02:39,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:02:39,980 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:02:40,000 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2020-12-22 19:02:40,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:02:40,119 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:02:40,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40 WrapperNode [2020-12-22 19:02:40,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:02:40,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:02:40,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:02:40,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:02:40,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:02:40,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:02:40,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:02:40,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:02:40,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (1/1) ... [2020-12-22 19:02:40,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:02:40,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:02:40,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:02:40,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:02:40,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (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 [2020-12-22 19:02:40,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:02:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:02:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:02:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:02:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:02:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:02:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:02:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:02:41,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:02:41,192 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-22 19:02:41,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:02:41 BoogieIcfgContainer [2020-12-22 19:02:41,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:02:41,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:02:41,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:02:41,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:02:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:02:39" (1/3) ... [2020-12-22 19:02:41,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b337d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:02:41, skipping insertion in model container [2020-12-22 19:02:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:02:40" (2/3) ... [2020-12-22 19:02:41,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b337d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:02:41, skipping insertion in model container [2020-12-22 19:02:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:02:41" (3/3) ... [2020-12-22 19:02:41,205 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-1.i [2020-12-22 19:02:41,213 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:02:41,219 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 34 error locations. [2020-12-22 19:02:41,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2020-12-22 19:02:41,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:02:41,266 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:02:41,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:02:41,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:02:41,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:02:41,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:02:41,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:02:41,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:02:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-12-22 19:02:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:02:41,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:41,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:02:41,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:02:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:41,303 INFO L82 PathProgramCache]: Analyzing trace with hash 28695942, now seen corresponding path program 1 times [2020-12-22 19:02:41,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:41,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640045684] [2020-12-22 19:02:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:02:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:02:41,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640045684] [2020-12-22 19:02:41,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:02:41,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:02:41,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564151899] [2020-12-22 19:02:41,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:02:41,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:02:41,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:02:41,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:02:41,581 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2020-12-22 19:02:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:02:41,686 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-12-22 19:02:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:02:41,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:02:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:02:41,702 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:02:41,703 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 19:02:41,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:02:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 19:02:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 19:02:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 19:02:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2020-12-22 19:02:41,780 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 5 [2020-12-22 19:02:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:02:41,781 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2020-12-22 19:02:41,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:02:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2020-12-22 19:02:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:02:41,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:02:41,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:02:41,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:02:41,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:02:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:02:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash 28695943, now seen corresponding path program 1 times [2020-12-22 19:02:41,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:02:41,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039095419] [2020-12-22 19:02:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:02:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:02:41,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:02:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:02:41,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:02:41,994 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:02:41,995 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:02:41,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:02:42,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:02:42 BoogieIcfgContainer [2020-12-22 19:02:42,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:02:42,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:02:42,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:02:42,040 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:02:42,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:02:41" (3/4) ... [2020-12-22 19:02:42,045 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:02:42,136 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-examples/relax-1.i-witness.graphml [2020-12-22 19:02:42,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:02:42,141 INFO L168 Benchmark]: Toolchain (without parser) took 2689.47 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 63.0 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,142 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:02:42,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 102.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 133.42 ms. Allocated memory is still 151.0 MB. Free memory was 102.2 MB in the beginning and 133.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,149 INFO L168 Benchmark]: Boogie Preprocessor took 43.39 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 131.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,149 INFO L168 Benchmark]: RCFGBuilder took 892.07 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 98.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,150 INFO L168 Benchmark]: TraceAbstraction took 842.51 ms. Allocated memory is still 151.0 MB. Free memory was 98.1 MB in the beginning and 65.0 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,151 INFO L168 Benchmark]: Witness Printer took 96.62 ms. Allocated memory is still 151.0 MB. Free memory was 64.5 MB in the beginning and 63.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:02:42,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 664.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 102.4 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 133.42 ms. Allocated memory is still 151.0 MB. Free memory was 102.2 MB in the beginning and 133.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.39 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 131.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 892.07 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 98.6 MB in the end (delta: 33.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 842.51 ms. Allocated memory is still 151.0 MB. Free memory was 98.1 MB in the beginning and 65.0 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * Witness Printer took 96.62 ms. Allocated memory is still 151.0 MB. Free memory was 64.5 MB in the beginning and 63.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 584]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L600] int *pat=malloc(sizeof(int)*pat_len); [L601] int *a=malloc(sizeof(int)*a_len); [L579] COND FALSE !(pat_length>a_length+1) [L581] int shift=0; [L582] int i=0; [L582] COND TRUE i