./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:38:39,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:38:39,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:38:39,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:38:39,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:38:39,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:38:39,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:38:39,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:38:39,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:38:39,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:38:39,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:38:39,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:38:39,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:38:39,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:38:39,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:38:39,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:38:39,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:38:39,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:38:39,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:38:39,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:38:39,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:38:39,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:38:39,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:38:39,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:38:39,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:38:39,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:38:39,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:38:39,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:38:39,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:38:39,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:38:39,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:38:39,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:38:39,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:38:39,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:38:39,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:38:39,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:38:39,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:38:39,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:38:39,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:38:39,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:38:39,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:38:39,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:38:39,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:38:39,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:38:39,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:38:39,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:38:39,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:38:39,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:38:39,694 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:38:39,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:38:39,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:38:39,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:38:39,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:38:39,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:38:39,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:38:39,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:38:39,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:38:39,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:38:39,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:38:39,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:38:39,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:38:39,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:38:39,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:38:39,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:38:39,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:38:39,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:38:39,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:38:39,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:38:39,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:38:39,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:38:39,702 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:38:39,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:38:39,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:38:39,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:38:39,703 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2021-10-28 23:38:40,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:38:40,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:38:40,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:38:40,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:38:40,090 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:38:40,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2021-10-28 23:38:40,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/data/05564a1b7/4ee048b2b19743d9a8022a79cab3e21d/FLAGa3474fc3b [2021-10-28 23:38:40,868 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:38:40,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2021-10-28 23:38:40,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/data/05564a1b7/4ee048b2b19743d9a8022a79cab3e21d/FLAGa3474fc3b [2021-10-28 23:38:41,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/data/05564a1b7/4ee048b2b19743d9a8022a79cab3e21d [2021-10-28 23:38:41,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:38:41,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:38:41,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:38:41,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:38:41,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:38:41,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4efd1bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41, skipping insertion in model container [2021-10-28 23:38:41,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:38:41,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:38:41,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-10-28 23:38:41,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:38:41,604 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:38:41,660 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-10-28 23:38:41,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:38:41,745 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:38:41,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41 WrapperNode [2021-10-28 23:38:41,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:38:41,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:38:41,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:38:41,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:38:41,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:38:41,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:38:41,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:38:41,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:38:41,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:38:41,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:38:41,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:38:41,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:38:41,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (1/1) ... [2021-10-28 23:38:41,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:38:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:38:41,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:38:42,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:38:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:38:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:38:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:38:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:38:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:38:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 23:38:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:38:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:38:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:38:43,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:38:43,070 INFO L299 CfgBuilder]: Removed 137 assume(true) statements. [2021-10-28 23:38:43,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:43 BoogieIcfgContainer [2021-10-28 23:38:43,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:38:43,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:38:43,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:38:43,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:38:43,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:38:41" (1/3) ... [2021-10-28 23:38:43,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee2f47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:38:43, skipping insertion in model container [2021-10-28 23:38:43,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:41" (2/3) ... [2021-10-28 23:38:43,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee2f47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:38:43, skipping insertion in model container [2021-10-28 23:38:43,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:43" (3/3) ... [2021-10-28 23:38:43,088 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2021-10-28 23:38:43,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:38:43,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 23:38:43,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:38:43,191 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:38:43,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 23:38:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 126 states have (on average 1.9365079365079365) internal successors, (244), 146 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:38:43,228 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:43,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:43,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-28 23:38:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash 586891724, now seen corresponding path program 1 times [2021-10-28 23:38:43,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:43,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048000830] [2021-10-28 23:38:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:43,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:43,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:43,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048000830] [2021-10-28 23:38:43,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048000830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:43,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:43,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:38:43,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534977546] [2021-10-28 23:38:43,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:38:43,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:43,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:38:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:38:43,558 INFO L87 Difference]: Start difference. First operand has 147 states, 126 states have (on average 1.9365079365079365) internal successors, (244), 146 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:43,627 INFO L93 Difference]: Finished difference Result 292 states and 486 transitions. [2021-10-28 23:38:43,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:38:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 23:38:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:43,649 INFO L225 Difference]: With dead ends: 292 [2021-10-28 23:38:43,650 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 23:38:43,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:38:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 23:38:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-10-28 23:38:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.256198347107438) internal successors, (152), 140 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2021-10-28 23:38:43,733 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 13 [2021-10-28 23:38:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:43,734 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2021-10-28 23:38:43,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2021-10-28 23:38:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:38:43,736 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:43,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:43,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:38:43,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-28 23:38:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1788456629, now seen corresponding path program 1 times [2021-10-28 23:38:43,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:43,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704622911] [2021-10-28 23:38:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:43,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:44,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:44,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704622911] [2021-10-28 23:38:44,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704622911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:44,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:44,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:38:44,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250235741] [2021-10-28 23:38:44,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:38:44,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:38:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:38:44,747 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:46,352 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2021-10-28 23:38:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:38:46,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 23:38:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:46,361 INFO L225 Difference]: With dead ends: 234 [2021-10-28 23:38:46,361 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 23:38:46,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:38:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 23:38:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 144. [2021-10-28 23:38:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 125 states have (on average 1.248) internal successors, (156), 143 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2021-10-28 23:38:46,407 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 24 [2021-10-28 23:38:46,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:46,408 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2021-10-28 23:38:46,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2021-10-28 23:38:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:38:46,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:46,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:46,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:38:46,411 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-28 23:38:46,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash 720092185, now seen corresponding path program 1 times [2021-10-28 23:38:46,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:46,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028049447] [2021-10-28 23:38:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:46,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:46,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:46,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028049447] [2021-10-28 23:38:46,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028049447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:46,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:46,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 23:38:46,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807087405] [2021-10-28 23:38:46,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:38:46,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:46,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:38:46,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:38:46,932 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:47,828 INFO L93 Difference]: Finished difference Result 252 states and 273 transitions. [2021-10-28 23:38:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:38:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 23:38:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:47,832 INFO L225 Difference]: With dead ends: 252 [2021-10-28 23:38:47,832 INFO L226 Difference]: Without dead ends: 248 [2021-10-28 23:38:47,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:38:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-28 23:38:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 144. [2021-10-28 23:38:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 143 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2021-10-28 23:38:47,850 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 26 [2021-10-28 23:38:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:47,851 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2021-10-28 23:38:47,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2021-10-28 23:38:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:38:47,853 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:47,853 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:47,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:38:47,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-28 23:38:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash 586745765, now seen corresponding path program 1 times [2021-10-28 23:38:47,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:47,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421381408] [2021-10-28 23:38:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:47,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:38:47,925 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:38:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:38:48,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:38:48,062 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:38:48,063 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:48,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:38:48,085 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 23:38:48,090 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:38:48,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:38:48 BoogieIcfgContainer [2021-10-28 23:38:48,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:38:48,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:38:48,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:38:48,152 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:38:48,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:43" (3/4) ... [2021-10-28 23:38:48,155 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:38:48,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:38:48,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:38:48,217 INFO L168 Benchmark]: Toolchain (without parser) took 7125.43 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 51.2 MB in the beginning and 71.8 MB in the end (delta: -20.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:38:48,218 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 68.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:38:48,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.97 ms. Allocated memory is still 88.1 MB. Free memory was 51.0 MB in the beginning and 55.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:48,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.57 ms. Allocated memory is still 88.1 MB. Free memory was 55.5 MB in the beginning and 52.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:48,220 INFO L168 Benchmark]: Boogie Preprocessor took 69.23 ms. Allocated memory is still 88.1 MB. Free memory was 52.5 MB in the beginning and 49.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:48,221 INFO L168 Benchmark]: RCFGBuilder took 1152.77 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 49.2 MB in the beginning and 71.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:48,221 INFO L168 Benchmark]: TraceAbstraction took 5074.01 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 76.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:48,222 INFO L168 Benchmark]: Witness Printer took 63.60 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 71.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:48,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 68.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 654.97 ms. Allocated memory is still 88.1 MB. Free memory was 51.0 MB in the beginning and 55.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.57 ms. Allocated memory is still 88.1 MB. Free memory was 55.5 MB in the beginning and 52.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.23 ms. Allocated memory is still 88.1 MB. Free memory was 52.5 MB in the beginning and 49.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1152.77 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 49.2 MB in the beginning and 71.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5074.01 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 76.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Witness Printer took 63.60 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 71.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L588] struct node *list = ((void *)0); [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] struct node *list = create_sll(&p1, &p2); [L642] \read(*p1) [L642] \read(*p2) [L626] COND FALSE !(!(beg)) [L627] COND FALSE !(!(end)) [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg [L629] COND TRUE !(beg) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 815 SDslu, 1453 SDs, 0 SdLazy, 673 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 190 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:38:48,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea74344-b8f2-44c0-8230-6844b104e235/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...