./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_5.c --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_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/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_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/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_188f1410-d424-4e1e-a352-6c3972fa905c/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 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:23:34,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:23:34,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:23:34,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:23:34,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:23:34,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:23:34,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:23:34,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:23:34,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:23:34,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:23:34,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:23:34,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:23:34,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:23:34,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:23:34,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:23:34,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:23:34,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:23:34,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:23:34,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:23:34,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:23:34,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:23:34,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:23:34,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:23:34,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:23:34,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:23:34,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:23:34,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:23:34,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:23:34,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:23:34,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:23:34,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:23:34,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:23:34,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:23:34,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:23:34,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:23:34,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:23:34,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:23:34,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:23:34,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:23:34,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:23:34,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:23:34,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:23:34,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:23:34,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:23:34,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:23:34,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:23:34,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:23:34,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:23:34,900 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:23:34,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:23:34,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:23:34,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:23:34,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:23:34,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:23:34,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:23:34,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:23:34,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:23:34,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:23:34,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:23:34,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:23:34,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:23:34,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:23:34,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:23:34,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:23:34,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:34,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:23:34,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:23:34,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:23:34,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:23:34,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:23:34,908 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:23:34,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:23:34,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:23:34,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:23:34,911 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_188f1410-d424-4e1e-a352-6c3972fa905c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2021-10-28 23:23:35,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:23:35,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:23:35,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:23:35,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:23:35,297 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:23:35,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/locks/test_locks_5.c [2021-10-28 23:23:35,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/data/89455f0cb/3faf3de73d704e67884a5c4a061d3cb4/FLAGfecba2d4f [2021-10-28 23:23:35,955 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:23:35,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/sv-benchmarks/c/locks/test_locks_5.c [2021-10-28 23:23:35,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/data/89455f0cb/3faf3de73d704e67884a5c4a061d3cb4/FLAGfecba2d4f [2021-10-28 23:23:36,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/data/89455f0cb/3faf3de73d704e67884a5c4a061d3cb4 [2021-10-28 23:23:36,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:23:36,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:23:36,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:36,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:23:36,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:23:36,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed8da98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36, skipping insertion in model container [2021-10-28 23:23:36,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:23:36,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:23:36,689 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_188f1410-d424-4e1e-a352-6c3972fa905c/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-28 23:23:36,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:36,706 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:23:36,731 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_188f1410-d424-4e1e-a352-6c3972fa905c/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-28 23:23:36,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:36,761 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:23:36,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36 WrapperNode [2021-10-28 23:23:36,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:36,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:36,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:23:36,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:23:36,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:36,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:23:36,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:23:36,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:23:36,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:23:36,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:23:36,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:23:36,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:23:36,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (1/1) ... [2021-10-28 23:23:36,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:36,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:36,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:36,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:23:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:23:37,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:23:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:23:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:23:37,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:23:37,262 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:23:37,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:37 BoogieIcfgContainer [2021-10-28 23:23:37,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:23:37,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:23:37,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:23:37,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:23:37,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:23:36" (1/3) ... [2021-10-28 23:23:37,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da9d7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:37, skipping insertion in model container [2021-10-28 23:23:37,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:36" (2/3) ... [2021-10-28 23:23:37,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da9d7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:37, skipping insertion in model container [2021-10-28 23:23:37,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:37" (3/3) ... [2021-10-28 23:23:37,275 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2021-10-28 23:23:37,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:23:37,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:23:37,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:23:37,346 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 23:23:37,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:23:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.826086956521739) internal successors, (42), 24 states have internal predecessors, (42), 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 23:23:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:23:37,385 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:37,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:37,387 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2021-10-28 23:23:37,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:37,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454057425] [2021-10-28 23:23:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:37,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:37,739 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 23:23:37,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:37,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454057425] [2021-10-28 23:23:37,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454057425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:37,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:37,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:37,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456921735] [2021-10-28 23:23:37,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:37,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:37,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:37,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:37,793 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.826086956521739) internal successors, (42), 24 states have internal predecessors, (42), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23:23:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:37,876 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2021-10-28 23:23:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:37,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-10-28 23:23:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:37,888 INFO L225 Difference]: With dead ends: 53 [2021-10-28 23:23:37,888 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 23:23:37,891 INFO L786 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 [2021-10-28 23:23:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 23:23:37,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-10-28 23:23:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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 23:23:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-10-28 23:23:37,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2021-10-28 23:23:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:37,934 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-10-28 23:23:37,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23:23:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-10-28 23:23:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:23:37,937 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:37,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:23:37,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:37,943 INFO L85 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2021-10-28 23:23:37,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:37,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021867032] [2021-10-28 23:23:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:37,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,053 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 23:23:38,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021867032] [2021-10-28 23:23:38,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021867032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794021147] [2021-10-28 23:23:38,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,062 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23:23:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,092 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2021-10-28 23:23:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-10-28 23:23:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,095 INFO L225 Difference]: With dead ends: 64 [2021-10-28 23:23:38,096 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 23:23:38,097 INFO L786 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 [2021-10-28 23:23:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 23:23:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-10-28 23:23:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 36 states have internal predecessors, (62), 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 23:23:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2021-10-28 23:23:38,112 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2021-10-28 23:23:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,113 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2021-10-28 23:23:38,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23:23:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2021-10-28 23:23:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:23:38,116 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:23:38,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2021-10-28 23:23:38,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411295099] [2021-10-28 23:23:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,220 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 23:23:38,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411295099] [2021-10-28 23:23:38,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411295099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638867947] [2021-10-28 23:23:38,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,224 INFO L87 Difference]: Start difference. First operand 37 states and 62 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,265 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2021-10-28 23:23:38,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,267 INFO L225 Difference]: With dead ends: 60 [2021-10-28 23:23:38,267 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:23:38,268 INFO L786 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 [2021-10-28 23:23:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:23:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-28 23:23:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.641025641025641) internal successors, (64), 39 states have internal predecessors, (64), 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 23:23:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2021-10-28 23:23:38,274 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2021-10-28 23:23:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,275 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2021-10-28 23:23:38,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2021-10-28 23:23:38,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:23:38,276 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:23:38,286 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,287 INFO L85 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2021-10-28 23:23:38,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664621880] [2021-10-28 23:23:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,371 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 23:23:38,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664621880] [2021-10-28 23:23:38,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664621880] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559480030] [2021-10-28 23:23:38,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,383 INFO L87 Difference]: Start difference. First operand 40 states and 64 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,415 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2021-10-28 23:23:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,418 INFO L225 Difference]: With dead ends: 73 [2021-10-28 23:23:38,420 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 23:23:38,421 INFO L786 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 [2021-10-28 23:23:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 23:23:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2021-10-28 23:23:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 52 states have internal predecessors, (85), 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 23:23:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2021-10-28 23:23:38,440 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2021-10-28 23:23:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,443 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2021-10-28 23:23:38,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,444 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2021-10-28 23:23:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:23:38,445 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:23:38,446 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2021-10-28 23:23:38,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043001537] [2021-10-28 23:23:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,483 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 23:23:38,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043001537] [2021-10-28 23:23:38,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043001537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164878409] [2021-10-28 23:23:38,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,486 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,503 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2021-10-28 23:23:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,505 INFO L225 Difference]: With dead ends: 121 [2021-10-28 23:23:38,505 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 23:23:38,505 INFO L786 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 [2021-10-28 23:23:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 23:23:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-10-28 23:23:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 70 states have internal predecessors, (111), 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 23:23:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2021-10-28 23:23:38,515 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2021-10-28 23:23:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,516 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2021-10-28 23:23:38,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 23:23:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2021-10-28 23:23:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:23:38,517 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,517 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:23:38,518 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2021-10-28 23:23:38,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739128381] [2021-10-28 23:23:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,552 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 23:23:38,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739128381] [2021-10-28 23:23:38,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739128381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123312596] [2021-10-28 23:23:38,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,555 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:23:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,580 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2021-10-28 23:23:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-28 23:23:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,583 INFO L225 Difference]: With dead ends: 108 [2021-10-28 23:23:38,583 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 23:23:38,584 INFO L786 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 [2021-10-28 23:23:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 23:23:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-10-28 23:23:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 72 states have internal predecessors, (111), 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 23:23:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2021-10-28 23:23:38,592 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2021-10-28 23:23:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,593 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2021-10-28 23:23:38,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:23:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2021-10-28 23:23:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:23:38,594 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,595 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:23:38,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2021-10-28 23:23:38,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102247836] [2021-10-28 23:23:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,627 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 23:23:38,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102247836] [2021-10-28 23:23:38,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102247836] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898208023] [2021-10-28 23:23:38,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,630 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:23:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,648 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2021-10-28 23:23:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-28 23:23:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,651 INFO L225 Difference]: With dead ends: 201 [2021-10-28 23:23:38,651 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 23:23:38,652 INFO L786 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 [2021-10-28 23:23:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 23:23:38,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-10-28 23:23:38,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 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 23:23:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2021-10-28 23:23:38,668 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2021-10-28 23:23:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,668 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2021-10-28 23:23:38,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:23:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2021-10-28 23:23:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:23:38,670 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:23:38,671 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2021-10-28 23:23:38,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666941644] [2021-10-28 23:23:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,715 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 23:23:38,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666941644] [2021-10-28 23:23:38,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666941644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859513338] [2021-10-28 23:23:38,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,719 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:23:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,748 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2021-10-28 23:23:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-28 23:23:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,751 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:23:38,752 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:23:38,752 INFO L786 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 [2021-10-28 23:23:38,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:23:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-10-28 23:23:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 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 23:23:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2021-10-28 23:23:38,780 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2021-10-28 23:23:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,781 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2021-10-28 23:23:38,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:23:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2021-10-28 23:23:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:23:38,783 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:23:38,784 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2021-10-28 23:23:38,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555667919] [2021-10-28 23:23:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,854 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 23:23:38,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555667919] [2021-10-28 23:23:38,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555667919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148378811] [2021-10-28 23:23:38,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,858 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 23:23:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,891 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2021-10-28 23:23:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-10-28 23:23:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,902 INFO L225 Difference]: With dead ends: 229 [2021-10-28 23:23:38,902 INFO L226 Difference]: Without dead ends: 227 [2021-10-28 23:23:38,903 INFO L786 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 [2021-10-28 23:23:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-28 23:23:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2021-10-28 23:23:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.4114583333333333) internal successors, (271), 192 states have internal predecessors, (271), 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 23:23:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2021-10-28 23:23:38,933 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2021-10-28 23:23:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:38,933 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2021-10-28 23:23:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 23:23:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2021-10-28 23:23:38,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:23:38,936 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:38,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:38,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:23:38,936 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2021-10-28 23:23:38,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:38,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037534808] [2021-10-28 23:23:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:38,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:38,970 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 23:23:38,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:38,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037534808] [2021-10-28 23:23:38,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037534808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:38,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:38,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:38,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052317155] [2021-10-28 23:23:38,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:38,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:38,973 INFO L87 Difference]: Start difference. First operand 193 states and 271 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 23:23:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:38,995 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2021-10-28 23:23:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-10-28 23:23:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:38,998 INFO L225 Difference]: With dead ends: 437 [2021-10-28 23:23:38,999 INFO L226 Difference]: Without dead ends: 251 [2021-10-28 23:23:39,000 INFO L786 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 [2021-10-28 23:23:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-28 23:23:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-10-28 23:23:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3346774193548387) internal successors, (331), 248 states have internal predecessors, (331), 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 23:23:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2021-10-28 23:23:39,022 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2021-10-28 23:23:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:39,023 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2021-10-28 23:23:39,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 23:23:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2021-10-28 23:23:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:23:39,026 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:39,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:39,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:23:39,026 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2021-10-28 23:23:39,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:39,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975255292] [2021-10-28 23:23:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:39,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:39,067 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 23:23:39,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:39,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975255292] [2021-10-28 23:23:39,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975255292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:39,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:39,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:39,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373471473] [2021-10-28 23:23:39,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:39,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:39,070 INFO L87 Difference]: Start difference. First operand 249 states and 331 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 23:23:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:39,088 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2021-10-28 23:23:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:39,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-10-28 23:23:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:39,091 INFO L225 Difference]: With dead ends: 381 [2021-10-28 23:23:39,091 INFO L226 Difference]: Without dead ends: 263 [2021-10-28 23:23:39,092 INFO L786 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 [2021-10-28 23:23:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-28 23:23:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-10-28 23:23:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3038461538461539) internal successors, (339), 260 states have internal predecessors, (339), 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 23:23:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2021-10-28 23:23:39,106 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2021-10-28 23:23:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:39,106 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2021-10-28 23:23:39,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 23:23:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2021-10-28 23:23:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:23:39,109 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:39,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:39,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:23:39,110 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:39,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:39,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2021-10-28 23:23:39,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:39,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166975731] [2021-10-28 23:23:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:39,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:39,137 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 23:23:39,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:39,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166975731] [2021-10-28 23:23:39,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166975731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:39,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:39,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:39,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397704513] [2021-10-28 23:23:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:39,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:39,140 INFO L87 Difference]: Start difference. First operand 261 states and 339 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 23:23:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:39,161 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2021-10-28 23:23:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:39,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-10-28 23:23:39,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:39,165 INFO L225 Difference]: With dead ends: 423 [2021-10-28 23:23:39,166 INFO L226 Difference]: Without dead ends: 421 [2021-10-28 23:23:39,166 INFO L786 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 [2021-10-28 23:23:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-10-28 23:23:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2021-10-28 23:23:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.2654639175257731) internal successors, (491), 388 states have internal predecessors, (491), 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 23:23:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2021-10-28 23:23:39,186 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2021-10-28 23:23:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:39,187 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2021-10-28 23:23:39,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 23:23:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2021-10-28 23:23:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:23:39,190 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:39,190 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:39,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:23:39,191 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2021-10-28 23:23:39,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:39,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086294430] [2021-10-28 23:23:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:39,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:39,218 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 23:23:39,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:39,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086294430] [2021-10-28 23:23:39,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086294430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:39,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:39,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:23:39,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768300802] [2021-10-28 23:23:39,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:23:39,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:23:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:23:39,222 INFO L87 Difference]: Start difference. First operand 389 states and 491 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 23:23:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:39,249 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2021-10-28 23:23:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:23:39,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-10-28 23:23:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:39,251 INFO L225 Difference]: With dead ends: 853 [2021-10-28 23:23:39,251 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:23:39,253 INFO L786 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 [2021-10-28 23:23:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:23:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:23:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 23:23:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:23:39,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-28 23:23:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:39,254 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:23:39,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 23:23:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:23:39,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:23:39,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:39,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:23:39,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:23:39,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:39,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:39,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:39,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:39,275 INFO L860 garLoopResultBuilder]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2021-10-28 23:23:39,276 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-28 23:23:39,276 INFO L857 garLoopResultBuilder]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,276 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:23:39,276 INFO L860 garLoopResultBuilder]: At program point L94(lines 6 95) the Hoare annotation is: true [2021-10-28 23:23:39,276 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:23:39,276 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:23:39,277 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-10-28 23:23:39,277 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2021-10-28 23:23:39,277 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-28 23:23:39,277 INFO L853 garLoopResultBuilder]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2021-10-28 23:23:39,277 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,277 INFO L857 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-10-28 23:23:39,278 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:23:39,278 INFO L860 garLoopResultBuilder]: At program point L91(lines 7 95) the Hoare annotation is: true [2021-10-28 23:23:39,278 INFO L857 garLoopResultBuilder]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,278 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-28 23:23:39,278 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,278 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,279 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,279 INFO L857 garLoopResultBuilder]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,279 INFO L857 garLoopResultBuilder]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,279 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-28 23:23:39,279 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-10-28 23:23:39,279 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2021-10-28 23:23:39,283 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:39,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:23:39,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:23:39 BoogieIcfgContainer [2021-10-28 23:23:39,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:23:39,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:23:39,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:23:39,294 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:23:39,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:37" (3/4) ... [2021-10-28 23:23:39,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:23:39,311 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:23:39,311 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:23:39,311 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:23:39,312 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:23:39,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:23:39,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:23:39,359 INFO L168 Benchmark]: Toolchain (without parser) took 3062.05 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 65.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:39,360 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:39,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.73 ms. Allocated memory is still 119.5 MB. Free memory was 85.4 MB in the beginning and 95.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:39,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.10 ms. Allocated memory is still 119.5 MB. Free memory was 95.7 MB in the beginning and 94.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:39,362 INFO L168 Benchmark]: Boogie Preprocessor took 56.57 ms. Allocated memory is still 119.5 MB. Free memory was 94.5 MB in the beginning and 93.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:39,362 INFO L168 Benchmark]: RCFGBuilder took 380.01 ms. Allocated memory is still 119.5 MB. Free memory was 93.3 MB in the beginning and 82.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:39,363 INFO L168 Benchmark]: TraceAbstraction took 2026.97 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 68.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:39,363 INFO L168 Benchmark]: Witness Printer took 63.63 ms. Allocated memory is still 119.5 MB. Free memory was 68.5 MB in the beginning and 65.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:39,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.73 ms. Allocated memory is still 119.5 MB. Free memory was 85.4 MB in the beginning and 95.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.10 ms. Allocated memory is still 119.5 MB. Free memory was 95.7 MB in the beginning and 94.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.57 ms. Allocated memory is still 119.5 MB. Free memory was 94.5 MB in the beginning and 93.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 380.01 ms. Allocated memory is still 119.5 MB. Free memory was 93.3 MB in the beginning and 82.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2026.97 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 68.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 63.63 ms. Allocated memory is still 119.5 MB. Free memory was 68.5 MB in the beginning and 65.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 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 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 574 SDtfs, 264 SDslu, 358 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=12, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:23:39,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188f1410-d424-4e1e-a352-6c3972fa905c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...