/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/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:47:42,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:47:42,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:47:42,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:47:42,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:47:42,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:47:42,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:47:42,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:47:42,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:47:42,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:47:42,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:47:42,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:47:42,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:47:42,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:47:42,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:47:42,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:47:42,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:47:42,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:47:42,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:47:42,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:47:42,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:47:42,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:47:42,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:47:42,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:47:42,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:47:42,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:47:42,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:47:42,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:47:42,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:47:42,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:47:42,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:47:42,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:47:42,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:47:42,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:47:42,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:47:42,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:47:42,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:47:42,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:47:42,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:47:42,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:47:42,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:47:42,681 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:47:42,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:47:42,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:47:42,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:47:42,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:47:42,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:47:42,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:47:42,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:47:42,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:47:42,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:47:42,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:47:42,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:47:42,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:47:42,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:47:42,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:47:42,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:47:42,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:47:42,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:47:42,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:47:42,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:47:42,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:47:42,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:47:43,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:47:43,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:47:43,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:47:43,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:47:43,152 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:47:43,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-12-22 03:47:43,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c92efb80/f332c207b2984c38af1a7b1a7848e8d5/FLAG2b027dc76 [2020-12-22 03:47:44,012 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:47:44,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-12-22 03:47:44,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c92efb80/f332c207b2984c38af1a7b1a7848e8d5/FLAG2b027dc76 [2020-12-22 03:47:44,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c92efb80/f332c207b2984c38af1a7b1a7848e8d5 [2020-12-22 03:47:44,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:47:44,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:47:44,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:47:44,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:47:44,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:47:44,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e30d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44, skipping insertion in model container [2020-12-22 03:47:44,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:47:44,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:47:44,622 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/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2020-12-22 03:47:44,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:47:44,668 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:47:44,705 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/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2020-12-22 03:47:44,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:47:44,811 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:47:44,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44 WrapperNode [2020-12-22 03:47:44,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:47:44,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:47:44,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:47:44,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:47:44,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:47:44,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:47:44,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:47:44,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:47:44,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (1/1) ... [2020-12-22 03:47:44,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:47:44,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:47:44,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:47:44,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:47:44,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (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 03:47:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 03:47:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 03:47:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:47:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 03:47:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:47:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 03:47:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:47:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:47:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:47:46,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:47:46,092 INFO L299 CfgBuilder]: Removed 137 assume(true) statements. [2020-12-22 03:47:46,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:47:46 BoogieIcfgContainer [2020-12-22 03:47:46,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:47:46,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:47:46,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:47:46,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:47:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:47:44" (1/3) ... [2020-12-22 03:47:46,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad576c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:47:46, skipping insertion in model container [2020-12-22 03:47:46,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:47:44" (2/3) ... [2020-12-22 03:47:46,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad576c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:47:46, skipping insertion in model container [2020-12-22 03:47:46,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:47:46" (3/3) ... [2020-12-22 03:47:46,104 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-12-22 03:47:46,111 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:47:46,117 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-22 03:47:46,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-22 03:47:46,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:47:46,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:47:46,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:47:46,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:47:46,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:47:46,172 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:47:46,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:47:46,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:47:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2020-12-22 03:47:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:47:46,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:47:46,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:47:46,205 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:47:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:47:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash 586891724, now seen corresponding path program 1 times [2020-12-22 03:47:46,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:47:46,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800685233] [2020-12-22 03:47:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:47:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:47:46,392 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 03:47:46,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800685233] [2020-12-22 03:47:46,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:47:46,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:47:46,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630551093] [2020-12-22 03:47:46,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:47:46,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:47:46,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:47:46,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:47:46,422 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2020-12-22 03:47:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:47:46,471 INFO L93 Difference]: Finished difference Result 292 states and 486 transitions. [2020-12-22 03:47:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:47:46,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 03:47:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:47:46,505 INFO L225 Difference]: With dead ends: 292 [2020-12-22 03:47:46,509 INFO L226 Difference]: Without dead ends: 141 [2020-12-22 03:47:46,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:47:46,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-22 03:47:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-12-22 03:47:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 03:47:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2020-12-22 03:47:46,599 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 13 [2020-12-22 03:47:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:47:46,600 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2020-12-22 03:47:46,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:47:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2020-12-22 03:47:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 03:47:46,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:47:46,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:47:46,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:47:46,605 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:47:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:47:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1788456629, now seen corresponding path program 1 times [2020-12-22 03:47:46,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:47:46,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344385179] [2020-12-22 03:47:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:47:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:47:47,312 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 03:47:47,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344385179] [2020-12-22 03:47:47,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:47:47,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 03:47:47,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401723128] [2020-12-22 03:47:47,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 03:47:47,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:47:47,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 03:47:47,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 03:47:47,317 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 12 states. [2020-12-22 03:47:48,154 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-22 03:47:48,311 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-12-22 03:47:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:47:48,806 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2020-12-22 03:47:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 03:47:48,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-12-22 03:47:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:47:48,809 INFO L225 Difference]: With dead ends: 234 [2020-12-22 03:47:48,809 INFO L226 Difference]: Without dead ends: 230 [2020-12-22 03:47:48,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-12-22 03:47:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-12-22 03:47:48,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 144. [2020-12-22 03:47:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-22 03:47:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-12-22 03:47:48,827 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 24 [2020-12-22 03:47:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:47:48,827 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-12-22 03:47:48,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 03:47:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-12-22 03:47:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 03:47:48,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:47:48,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:47:48,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:47:48,829 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:47:48,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:47:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash 720092185, now seen corresponding path program 1 times [2020-12-22 03:47:48,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:47:48,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321470978] [2020-12-22 03:47:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:47:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:47:49,210 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 03:47:49,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321470978] [2020-12-22 03:47:49,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:47:49,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 03:47:49,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928312629] [2020-12-22 03:47:49,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 03:47:49,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:47:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 03:47:49,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 03:47:49,220 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 13 states. [2020-12-22 03:47:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:47:50,296 INFO L93 Difference]: Finished difference Result 252 states and 273 transitions. [2020-12-22 03:47:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 03:47:50,297 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-12-22 03:47:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:47:50,299 INFO L225 Difference]: With dead ends: 252 [2020-12-22 03:47:50,300 INFO L226 Difference]: Without dead ends: 248 [2020-12-22 03:47:50,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-12-22 03:47:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-12-22 03:47:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 144. [2020-12-22 03:47:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-22 03:47:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-12-22 03:47:50,316 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 26 [2020-12-22 03:47:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:47:50,317 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-12-22 03:47:50,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 03:47:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-12-22 03:47:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 03:47:50,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:47:50,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:47:50,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:47:50,319 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:47:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:47:50,320 INFO L82 PathProgramCache]: Analyzing trace with hash 586745765, now seen corresponding path program 1 times [2020-12-22 03:47:50,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:47:50,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955008830] [2020-12-22 03:47:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:47:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:47:50,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:47:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:47:50,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:47:50,572 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:47:50,572 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:47:50,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:47:50,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:47:50 BoogieIcfgContainer [2020-12-22 03:47:50,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:47:50,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:47:50,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:47:50,676 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:47:50,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:47:46" (3/4) ... [2020-12-22 03:47:50,679 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 03:47:50,777 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/heap-manipulation/sll_to_dll_rev-1.i-witness.graphml [2020-12-22 03:47:50,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:47:50,781 INFO L168 Benchmark]: Toolchain (without parser) took 6537.33 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 138.2 MB in the beginning and 171.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 1.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,781 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:47:50,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.11 ms. Allocated memory is still 164.6 MB. Free memory was 138.0 MB in the beginning and 146.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.14 ms. Allocated memory is still 164.6 MB. Free memory was 146.5 MB in the beginning and 143.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,785 INFO L168 Benchmark]: Boogie Preprocessor took 85.32 ms. Allocated memory is still 164.6 MB. Free memory was 143.4 MB in the beginning and 140.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,787 INFO L168 Benchmark]: RCFGBuilder took 1117.01 ms. Allocated memory is still 164.6 MB. Free memory was 140.3 MB in the beginning and 85.2 MB in the end (delta: 55.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,787 INFO L168 Benchmark]: TraceAbstraction took 4579.02 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 84.7 MB in the beginning and 175.8 MB in the end (delta: -91.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,788 INFO L168 Benchmark]: Witness Printer took 101.24 ms. Allocated memory is still 198.2 MB. Free memory was 175.3 MB in the beginning and 171.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:47:50,794 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 164.6 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 569.11 ms. Allocated memory is still 164.6 MB. Free memory was 138.0 MB in the beginning and 146.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 77.14 ms. Allocated memory is still 164.6 MB. Free memory was 146.5 MB in the beginning and 143.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.32 ms. Allocated memory is still 164.6 MB. Free memory was 143.4 MB in the beginning and 140.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1117.01 ms. Allocated memory is still 164.6 MB. Free memory was 140.3 MB in the beginning and 85.2 MB in the end (delta: 55.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4579.02 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 84.7 MB in the beginning and 175.8 MB in the end (delta: -91.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. * Witness Printer took 101.24 ms. Allocated memory is still 198.2 MB. Free memory was 175.3 MB in the beginning and 171.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L588] struct node *list = ((void *)0); [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] struct node *list = create_sll(&p1, &p2); [L642] \read(*p1) [L642] \read(*p2) [L626] COND FALSE !(!(beg)) [L627] COND FALSE !(!(end)) [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg [L629] COND TRUE !(beg) [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 843 SDslu, 1471 SDs, 0 SdLazy, 678 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred 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, 3 MinimizatonAttempts, 190 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 22690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 incorrect! Received shutdown request...