/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/list-ext-properties/test-0158_1-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:16:07,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:16:07,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:16:07,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:16:07,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:16:07,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:16:07,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:16:07,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:16:07,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:16:07,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:16:07,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:16:07,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:16:07,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:16:07,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:16:07,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:16:07,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:16:07,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:16:07,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:16:07,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:16:07,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:16:07,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:16:07,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:16:07,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:16:07,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:16:07,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:16:07,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:16:07,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:16:07,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:16:07,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:16:07,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:16:07,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:16:07,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:16:07,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:16:07,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:16:07,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:16:07,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:16:07,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:16:07,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:16:07,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:16:07,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:16:07,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:16:07,593 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:16:07,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:16:07,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:16:07,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:16:07,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:16:07,594 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:16:07,594 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:16:07,594 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:16:07,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:16:07,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:16:07,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:16:07,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:16:07,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:16:07,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:16:07,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:16:07,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:16:07,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:16:07,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:16:07,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:16:07,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:16:07,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:16:08,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:16:08,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:16:08,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:16:08,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:16:08,054 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:16:08,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2020-12-22 19:16:08,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e427e6ecf/e4a1e4e35bd840eb8b1e4c8c27d51d85/FLAG7f5840b7b [2020-12-22 19:16:08,807 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:16:08,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2020-12-22 19:16:08,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e427e6ecf/e4a1e4e35bd840eb8b1e4c8c27d51d85/FLAG7f5840b7b [2020-12-22 19:16:09,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e427e6ecf/e4a1e4e35bd840eb8b1e4c8c27d51d85 [2020-12-22 19:16:09,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:16:09,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:16:09,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:16:09,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:16:09,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:16:09,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3962df02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09, skipping insertion in model container [2020-12-22 19:16:09,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:16:09,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:16:09,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:16:09,570 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:16:09,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:16:09,684 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:16:09,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09 WrapperNode [2020-12-22 19:16:09,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:16:09,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:16:09,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:16:09,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:16:09,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:16:09,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:16:09,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:16:09,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:16:09,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (1/1) ... [2020-12-22 19:16:09,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:16:09,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:16:09,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:16:09,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:16:09,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (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 19:16:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:16:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:16:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:16:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:16:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:16:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:16:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:16:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:16:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:16:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:16:10,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:16:10,427 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 19:16:10,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:10 BoogieIcfgContainer [2020-12-22 19:16:10,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:16:10,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:16:10,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:16:10,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:16:10,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:16:09" (1/3) ... [2020-12-22 19:16:10,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461093c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:10, skipping insertion in model container [2020-12-22 19:16:10,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:09" (2/3) ... [2020-12-22 19:16:10,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461093c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:10, skipping insertion in model container [2020-12-22 19:16:10,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:10" (3/3) ... [2020-12-22 19:16:10,438 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-3.i [2020-12-22 19:16:10,445 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:16:10,450 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-12-22 19:16:10,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-12-22 19:16:10,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:16:10,497 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:16:10,498 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:16:10,498 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:16:10,498 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:16:10,498 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:16:10,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:16:10,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:16:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-22 19:16:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-22 19:16:10,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:10,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-22 19:16:10,525 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-22 19:16:10,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:10,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156019999] [2020-12-22 19:16:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:10,763 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 19:16:10,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156019999] [2020-12-22 19:16:10,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:10,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:16:10,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455263267] [2020-12-22 19:16:10,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:16:10,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:16:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:16:10,797 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-12-22 19:16:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:10,895 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-12-22 19:16:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:16:10,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-22 19:16:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:10,908 INFO L225 Difference]: With dead ends: 35 [2020-12-22 19:16:10,908 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 19:16:10,910 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 19:16:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 19:16:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 19:16:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:16:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-12-22 19:16:10,950 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 3 [2020-12-22 19:16:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:10,950 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-12-22 19:16:10,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:16:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-12-22 19:16:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-22 19:16:10,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:10,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-22 19:16:10,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:16:10,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-22 19:16:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:10,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343405838] [2020-12-22 19:16:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:11,021 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 19:16:11,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343405838] [2020-12-22 19:16:11,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:11,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:16:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489086698] [2020-12-22 19:16:11,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:16:11,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:16:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:16:11,026 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 3 states. [2020-12-22 19:16:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:11,065 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-12-22 19:16:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:16:11,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-22 19:16:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:11,067 INFO L225 Difference]: With dead ends: 26 [2020-12-22 19:16:11,067 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 19:16:11,068 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 19:16:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 19:16:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-22 19:16:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 19:16:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-22 19:16:11,073 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 3 [2020-12-22 19:16:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:11,074 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-22 19:16:11,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:16:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-22 19:16:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:16:11,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:11,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:16:11,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:16:11,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 377191761, now seen corresponding path program 1 times [2020-12-22 19:16:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:11,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793377150] [2020-12-22 19:16:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:11,226 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 19:16:11,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793377150] [2020-12-22 19:16:11,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:11,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:16:11,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856246783] [2020-12-22 19:16:11,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:16:11,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:11,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:16:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:16:11,230 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2020-12-22 19:16:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:11,290 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-22 19:16:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:16:11,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:16:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:11,291 INFO L225 Difference]: With dead ends: 25 [2020-12-22 19:16:11,292 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 19:16:11,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:16:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 19:16:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-22 19:16:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 19:16:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-12-22 19:16:11,297 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 11 [2020-12-22 19:16:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:11,297 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-12-22 19:16:11,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:16:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-12-22 19:16:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:16:11,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:11,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:16:11,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:16:11,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1191957227, now seen corresponding path program 1 times [2020-12-22 19:16:11,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:11,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747500565] [2020-12-22 19:16:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:11,380 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 19:16:11,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747500565] [2020-12-22 19:16:11,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:11,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:16:11,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43421579] [2020-12-22 19:16:11,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:16:11,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:11,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:16:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:16:11,384 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 5 states. [2020-12-22 19:16:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:11,468 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-22 19:16:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:16:11,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 19:16:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:11,470 INFO L225 Difference]: With dead ends: 24 [2020-12-22 19:16:11,470 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 19:16:11,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:16:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 19:16:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-22 19:16:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 19:16:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-22 19:16:11,479 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2020-12-22 19:16:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:11,479 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-22 19:16:11,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:16:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-22 19:16:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:16:11,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:11,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:16:11,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:16:11,483 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:11,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1704031699, now seen corresponding path program 1 times [2020-12-22 19:16:11,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:11,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954201842] [2020-12-22 19:16:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:11,617 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 19:16:11,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954201842] [2020-12-22 19:16:11,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:11,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:16:11,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972819654] [2020-12-22 19:16:11,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:16:11,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:11,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:16:11,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:16:11,620 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-12-22 19:16:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:11,690 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-22 19:16:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:16:11,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 19:16:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:11,692 INFO L225 Difference]: With dead ends: 23 [2020-12-22 19:16:11,692 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 19:16:11,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:16:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 19:16:11,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 19:16:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 19:16:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-22 19:16:11,703 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2020-12-22 19:16:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:11,704 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-22 19:16:11,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:16:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-22 19:16:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 19:16:11,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:11,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:16:11,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:16:11,708 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:11,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1285375191, now seen corresponding path program 1 times [2020-12-22 19:16:11,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:11,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996486758] [2020-12-22 19:16:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:11,778 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 19:16:11,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996486758] [2020-12-22 19:16:11,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:11,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:16:11,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076735241] [2020-12-22 19:16:11,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:16:11,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:16:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:16:11,787 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-12-22 19:16:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:11,876 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-12-22 19:16:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:16:11,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 19:16:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:11,878 INFO L225 Difference]: With dead ends: 22 [2020-12-22 19:16:11,878 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 19:16:11,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:16:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 19:16:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 19:16:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 19:16:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-22 19:16:11,887 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-12-22 19:16:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:11,887 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-22 19:16:11,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:16:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-22 19:16:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:16:11,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:11,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:16:11,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:16:11,889 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:11,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1191925333, now seen corresponding path program 1 times [2020-12-22 19:16:11,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:11,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401602404] [2020-12-22 19:16:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:16:11,950 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 19:16:11,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401602404] [2020-12-22 19:16:11,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:16:11,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:16:11,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200098575] [2020-12-22 19:16:11,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:16:11,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:16:11,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:16:11,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:16:11,953 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-12-22 19:16:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:16:12,040 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-22 19:16:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:16:12,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:16:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:16:12,041 INFO L225 Difference]: With dead ends: 21 [2020-12-22 19:16:12,041 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 19:16:12,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:16:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 19:16:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-22 19:16:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 19:16:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-22 19:16:12,045 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2020-12-22 19:16:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:16:12,046 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-22 19:16:12,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:16:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-22 19:16:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:16:12,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:16:12,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:16:12,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:16:12,047 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:16:12,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:16:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1705020263, now seen corresponding path program 1 times [2020-12-22 19:16:12,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:16:12,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312417527] [2020-12-22 19:16:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:16:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:16:12,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:16:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:16:12,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:16:12,113 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:16:12,113 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:16:12,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:16:12,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:16:12 BoogieIcfgContainer [2020-12-22 19:16:12,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:16:12,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:16:12,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:16:12,147 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:16:12,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:10" (3/4) ... [2020-12-22 19:16:12,153 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:16:12,202 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext-properties/test-0158_1-3.i-witness.graphml [2020-12-22 19:16:12,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:16:12,205 INFO L168 Benchmark]: Toolchain (without parser) took 3076.64 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 72.0 MB in the end (delta: 53.1 MB). Peak memory consumption was 54.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,206 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.7 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:16:12,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.24 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.08 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 101.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,208 INFO L168 Benchmark]: Boogie Preprocessor took 95.83 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 133.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,209 INFO L168 Benchmark]: RCFGBuilder took 596.12 ms. Allocated memory is still 151.0 MB. Free memory was 133.3 MB in the beginning and 112.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,210 INFO L168 Benchmark]: TraceAbstraction took 1715.04 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 74.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 39.3 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,211 INFO L168 Benchmark]: Witness Printer took 56.60 ms. Allocated memory is still 151.0 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:16:12,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.7 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 556.24 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.08 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 101.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.83 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 133.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.12 ms. Allocated memory is still 151.0 MB. Free memory was 133.3 MB in the beginning and 112.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1715.04 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 74.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 39.3 MB. Max. memory is 8.0 GB. * Witness Printer took 56.60 ms. Allocated memory is still 151.0 MB. Free memory was 74.1 MB in the beginning and 72.0 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: - CounterExampleResult [Line: 545]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) [L535] EXPR data.p0 [L535] void *ptr = data.p0; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L539] data.str.p2 = 30 [L541] EXPR data.str.p2 [L541] COND FALSE !(25 > data.str.p2) [L544] EXPR data.p0 [L544] free(data.p0) [L544] free(data.p0) [L544] free(data.p0) [L545] free(ptr) [L545] free(ptr) [L545] free(ptr) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 SDtfs, 201 SDslu, 73 SDs, 0 SdLazy, 171 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3982 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...