/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:01:23,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:01:23,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:01:23,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:01:23,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:01:23,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:01:23,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:01:23,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:01:23,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:01:23,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:01:23,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:01:23,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:01:23,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:01:23,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:01:23,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:01:23,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:01:23,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:01:23,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:01:23,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:01:23,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:01:23,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:01:23,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:01:23,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:01:23,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:01:23,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:01:23,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:01:23,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:01:23,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:01:23,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:01:23,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:01:23,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:01:23,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:01:23,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:01:23,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:01:23,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:01:23,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:01:23,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:01:23,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:01:23,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:01:23,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:01:23,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:01:23,692 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:01:23,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:01:23,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:01:23,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:01:23,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:01:23,693 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:01:23,693 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:01:23,693 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:01:23,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:01:23,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:01:23,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:01:23,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:01:23,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:01:23,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:01:23,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:01:23,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:01:23,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:01:23,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:01:23,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:01:23,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:01:23,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:01:24,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:01:24,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:01:24,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:01:24,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:01:24,108 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:01:24,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-12-22 19:01:24,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faea23fd0/19ab669648a14476a8a784537061497e/FLAG76c32dbf2 [2020-12-22 19:01:24,975 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:01:24,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-12-22 19:01:24,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faea23fd0/19ab669648a14476a8a784537061497e/FLAG76c32dbf2 [2020-12-22 19:01:25,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faea23fd0/19ab669648a14476a8a784537061497e [2020-12-22 19:01:25,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:01:25,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:01:25,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:01:25,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:01:25,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:01:25,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ecada7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25, skipping insertion in model container [2020-12-22 19:01:25,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:01:25,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:01:25,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:01:25,647 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:01:25,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:01:25,812 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:01:25,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25 WrapperNode [2020-12-22 19:01:25,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:01:25,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:01:25,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:01:25,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:01:25,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:01:25,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:01:25,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:01:25,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:01:25,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (1/1) ... [2020-12-22 19:01:25,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:01:25,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:01:25,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:01:25,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:01:25,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (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 19:01:26,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:01:26,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:01:26,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:01:26,576 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 19:01:26,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:01:26 BoogieIcfgContainer [2020-12-22 19:01:26,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:01:26,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:01:26,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:01:26,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:01:26,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:01:25" (1/3) ... [2020-12-22 19:01:26,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e814dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:01:26, skipping insertion in model container [2020-12-22 19:01:26,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:01:25" (2/3) ... [2020-12-22 19:01:26,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e814dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:01:26, skipping insertion in model container [2020-12-22 19:01:26,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:01:26" (3/3) ... [2020-12-22 19:01:26,601 INFO L111 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe.i [2020-12-22 19:01:26,609 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:01:26,617 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-22 19:01:26,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-22 19:01:26,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:01:26,686 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:01:26,686 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:01:26,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:01:26,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:01:26,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:01:26,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:01:26,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:01:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-22 19:01:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:01:26,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:26,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:26,724 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-12-22 19:01:26,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:26,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620886454] [2020-12-22 19:01:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:27,006 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 19:01:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620886454] [2020-12-22 19:01:27,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:01:27,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:01:27,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467051872] [2020-12-22 19:01:27,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:01:27,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:01:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:01:27,041 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-12-22 19:01:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:27,164 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-12-22 19:01:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:01:27,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:01:27,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:27,188 INFO L225 Difference]: With dead ends: 55 [2020-12-22 19:01:27,188 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:01:27,200 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 19:01:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:01:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 19:01:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 19:01:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-12-22 19:01:27,243 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 7 [2020-12-22 19:01:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:27,243 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-12-22 19:01:27,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:01:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-12-22 19:01:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:01:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:27,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:27,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:01:27,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-12-22 19:01:27,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:27,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533290732] [2020-12-22 19:01:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:27,339 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 19:01:27,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533290732] [2020-12-22 19:01:27,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:01:27,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:01:27,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550866416] [2020-12-22 19:01:27,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:01:27,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:01:27,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:01:27,344 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 6 states. [2020-12-22 19:01:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:27,634 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-12-22 19:01:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:01:27,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-22 19:01:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:27,637 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:01:27,637 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:01:27,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:01:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:01:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 56. [2020-12-22 19:01:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:01:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-12-22 19:01:27,652 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 7 [2020-12-22 19:01:27,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:27,652 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-12-22 19:01:27,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:01:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-12-22 19:01:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:01:27,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:27,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:27,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:01:27,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:27,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1805088679, now seen corresponding path program 1 times [2020-12-22 19:01:27,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:27,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106678695] [2020-12-22 19:01:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:27,755 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 19:01:27,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106678695] [2020-12-22 19:01:27,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:01:27,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:01:27,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649645148] [2020-12-22 19:01:27,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:01:27,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:01:27,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:01:27,758 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 5 states. [2020-12-22 19:01:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:27,877 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-12-22 19:01:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:01:27,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-22 19:01:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:27,881 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:01:27,881 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:01:27,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:01:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:01:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-12-22 19:01:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:01:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-12-22 19:01:27,903 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 7 [2020-12-22 19:01:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:27,904 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-12-22 19:01:27,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:01:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-12-22 19:01:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:01:27,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:27,904 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:27,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:01:27,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:27,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2020-12-22 19:01:27,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:27,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153304470] [2020-12-22 19:01:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:01:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153304470] [2020-12-22 19:01:28,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:01:28,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:01:28,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692600424] [2020-12-22 19:01:28,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:01:28,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:28,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:01:28,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:01:28,022 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 3 states. [2020-12-22 19:01:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:28,042 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-22 19:01:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:01:28,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-22 19:01:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:28,044 INFO L225 Difference]: With dead ends: 56 [2020-12-22 19:01:28,044 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 19:01:28,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:01:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 19:01:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-22 19:01:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:01:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-12-22 19:01:28,049 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 11 [2020-12-22 19:01:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:28,049 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-12-22 19:01:28,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:01:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-12-22 19:01:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:01:28,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:28,050 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:28,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:01:28,051 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1579537130, now seen corresponding path program 1 times [2020-12-22 19:01:28,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:28,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133320188] [2020-12-22 19:01:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:28,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133320188] [2020-12-22 19:01:28,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576920115] [2020-12-22 19:01:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:28,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:01:28,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:28,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:01:28,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-12-22 19:01:28,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310907895] [2020-12-22 19:01:28,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:01:28,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:01:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:01:28,265 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 5 states. [2020-12-22 19:01:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:28,311 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-12-22 19:01:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:01:28,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:01:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:28,313 INFO L225 Difference]: With dead ends: 105 [2020-12-22 19:01:28,313 INFO L226 Difference]: Without dead ends: 105 [2020-12-22 19:01:28,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:01:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-22 19:01:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2020-12-22 19:01:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 19:01:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-22 19:01:28,319 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 11 [2020-12-22 19:01:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:28,320 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-22 19:01:28,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:01:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-22 19:01:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:01:28,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:28,321 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:28,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:28,535 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:28,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2020-12-22 19:01:28,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:28,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414176556] [2020-12-22 19:01:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:28,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414176556] [2020-12-22 19:01:28,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194772836] [2020-12-22 19:01:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:28,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:01:28,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:28,814 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:01:28,815 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:28,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:28,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:28,837 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:21 [2020-12-22 19:01:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:28,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:28,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-12-22 19:01:28,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520720557] [2020-12-22 19:01:28,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:01:28,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:01:28,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:01:28,895 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 9 states. [2020-12-22 19:01:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:29,220 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-12-22 19:01:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:01:29,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-22 19:01:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:29,222 INFO L225 Difference]: With dead ends: 119 [2020-12-22 19:01:29,222 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 19:01:29,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:01:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 19:01:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 67. [2020-12-22 19:01:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-22 19:01:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-12-22 19:01:29,229 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 11 [2020-12-22 19:01:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:29,230 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-12-22 19:01:29,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:01:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-12-22 19:01:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:01:29,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:29,231 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:29,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:29,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:29,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2035371796, now seen corresponding path program 1 times [2020-12-22 19:01:29,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:29,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387898470] [2020-12-22 19:01:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:29,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387898470] [2020-12-22 19:01:29,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312985458] [2020-12-22 19:01:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:29,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:01:29,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:29,592 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:01:29,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:01:29,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:01:29,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:01:29,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-22 19:01:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:29,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:29,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 19:01:29,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729527765] [2020-12-22 19:01:29,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:01:29,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:29,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:01:29,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:01:29,662 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 7 states. [2020-12-22 19:01:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:29,805 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-12-22 19:01:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:01:29,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-22 19:01:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:29,806 INFO L225 Difference]: With dead ends: 70 [2020-12-22 19:01:29,806 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 19:01:29,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:01:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 19:01:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-12-22 19:01:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 19:01:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-12-22 19:01:29,812 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 11 [2020-12-22 19:01:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:29,812 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-12-22 19:01:29,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:01:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-12-22 19:01:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:01:29,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:29,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:30,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:30,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1811674861, now seen corresponding path program 1 times [2020-12-22 19:01:30,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:30,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722128826] [2020-12-22 19:01:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:01:30,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722128826] [2020-12-22 19:01:30,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:01:30,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:01:30,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777634034] [2020-12-22 19:01:30,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:01:30,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:30,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:01:30,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:01:30,078 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 4 states. [2020-12-22 19:01:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:30,123 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-22 19:01:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:01:30,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 19:01:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:30,124 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:01:30,124 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:01:30,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:01:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:01:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-12-22 19:01:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 19:01:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-22 19:01:30,129 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 13 [2020-12-22 19:01:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:30,129 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-22 19:01:30,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:01:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-22 19:01:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:01:30,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:30,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:30,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:01:30,131 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1811674902, now seen corresponding path program 1 times [2020-12-22 19:01:30,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:30,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737599065] [2020-12-22 19:01:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:30,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737599065] [2020-12-22 19:01:30,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473323432] [2020-12-22 19:01:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:01:30,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:01:30,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:01:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:01:30,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:01:30,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2020-12-22 19:01:30,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045343596] [2020-12-22 19:01:30,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:01:30,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:01:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:01:30,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:01:30,326 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 9 states. [2020-12-22 19:01:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:01:30,510 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-12-22 19:01:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:01:30,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 19:01:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:01:30,512 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:01:30,512 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:01:30,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:01:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:01:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-12-22 19:01:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 19:01:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2020-12-22 19:01:30,517 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 13 [2020-12-22 19:01:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:01:30,517 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2020-12-22 19:01:30,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:01:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2020-12-22 19:01:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:01:30,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:01:30,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:01:30,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:01:30,732 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:01:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:01:30,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1872947024, now seen corresponding path program 1 times [2020-12-22 19:01:30,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:01:30,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030476254] [2020-12-22 19:01:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:01:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:01:30,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:01:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:01:30,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:01:30,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:01:30,795 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:01:30,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:01:30,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:01:30 BoogieIcfgContainer [2020-12-22 19:01:30,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:01:30,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:01:30,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:01:30,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:01:30,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:01:26" (3/4) ... [2020-12-22 19:01:30,838 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:01:30,915 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/reverse_array_alloca_unsafe.i-witness.graphml [2020-12-22 19:01:30,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:01:30,918 INFO L168 Benchmark]: Toolchain (without parser) took 5676.23 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 125.6 MB in the beginning and 124.8 MB in the end (delta: 826.9 kB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,920 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:01:30,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 105.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.67 ms. Allocated memory is still 151.0 MB. Free memory was 105.0 MB in the beginning and 103.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,925 INFO L168 Benchmark]: Boogie Preprocessor took 34.66 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 101.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,929 INFO L168 Benchmark]: RCFGBuilder took 670.59 ms. Allocated memory is still 151.0 MB. Free memory was 101.7 MB in the beginning and 112.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,929 INFO L168 Benchmark]: TraceAbstraction took 4247.80 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 111.4 MB in the beginning and 126.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,930 INFO L168 Benchmark]: Witness Printer took 81.53 ms. Allocated memory is still 185.6 MB. Free memory was 126.9 MB in the beginning and 124.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:01:30,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 571.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 105.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.67 ms. Allocated memory is still 151.0 MB. Free memory was 105.0 MB in the beginning and 103.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.66 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 101.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 670.59 ms. Allocated memory is still 151.0 MB. Free memory was 101.7 MB in the beginning and 112.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4247.80 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 111.4 MB in the beginning and 126.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * Witness Printer took 81.53 ms. Allocated memory is still 185.6 MB. Free memory was 126.9 MB in the beginning and 124.8 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: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ [L521] COND FALSE !(i < length) [L526] i=0 [L526] COND TRUE i