./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be --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-e943c26 [2021-10-21 19:31:46,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:31:46,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:31:46,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:31:46,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:31:46,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:31:46,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:31:46,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:31:46,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:31:46,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:31:46,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:31:46,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:31:46,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:31:46,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:31:46,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:31:46,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:31:46,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:31:46,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:31:46,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:31:46,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:31:46,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:31:46,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:31:46,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:31:46,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:31:46,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:31:46,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:31:46,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:31:46,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:31:46,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:31:46,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:31:46,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:31:46,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:31:46,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:31:46,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:31:46,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:31:46,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:31:46,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:31:46,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:31:46,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:31:46,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:31:46,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:31:46,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:31:46,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:31:46,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:31:46,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:31:46,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:31:46,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:31:46,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:31:46,924 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:31:46,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:31:46,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:31:46,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:31:46,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:31:46,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:31:46,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:31:46,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:31:46,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:31:46,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:31:46,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:31:46,928 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:31:46,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:31:46,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:31:46,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:31:46,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:31:46,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:46,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:31:46,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:31:46,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:31:46,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:31:46,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:31:46,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:31:46,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:31:46,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:31:46,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:31:46,934 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_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2021-10-21 19:31:47,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:31:47,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:31:47,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:31:47,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:31:47,296 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:31:47,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/locks/test_locks_5.c [2021-10-21 19:31:47,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/data/cfe1853d4/83c406281c134375869310f10f0d632b/FLAGd48656234 [2021-10-21 19:31:47,897 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:31:47,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/sv-benchmarks/c/locks/test_locks_5.c [2021-10-21 19:31:47,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/data/cfe1853d4/83c406281c134375869310f10f0d632b/FLAGd48656234 [2021-10-21 19:31:48,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/data/cfe1853d4/83c406281c134375869310f10f0d632b [2021-10-21 19:31:48,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:31:48,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:31:48,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:48,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:31:48,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:31:48,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6003a18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48, skipping insertion in model container [2021-10-21 19:31:48,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:31:48,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:31:48,524 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_43902b26-9227-49af-86d4-a031613af650/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-21 19:31:48,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:48,542 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:31:48,562 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_43902b26-9227-49af-86d4-a031613af650/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-21 19:31:48,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:48,578 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:31:48,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48 WrapperNode [2021-10-21 19:31:48,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:48,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:31:48,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:31:48,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:31:48,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:31:48,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:31:48,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:31:48,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:31:48,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:31:48,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:31:48,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:31:48,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:31:48,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (1/1) ... [2021-10-21 19:31:48,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:31:48,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:31:48,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:31:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:31:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:31:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:31:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:31:49,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:31:49,053 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:31:49,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:49 BoogieIcfgContainer [2021-10-21 19:31:49,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:31:49,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:31:49,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:31:49,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:31:49,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:31:48" (1/3) ... [2021-10-21 19:31:49,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58eba541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:31:49, skipping insertion in model container [2021-10-21 19:31:49,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:48" (2/3) ... [2021-10-21 19:31:49,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58eba541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:31:49, skipping insertion in model container [2021-10-21 19:31:49,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:49" (3/3) ... [2021-10-21 19:31:49,080 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2021-10-21 19:31:49,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:31:49,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:31:49,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:31:49,177 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 [2021-10-21 19:31:49,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:31:49,222 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) [2021-10-21 19:31:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:31:49,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:49,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:49,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:49,237 INFO L82 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2021-10-21 19:31:49,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:49,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931713050] [2021-10-21 19:31:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:49,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:49,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:49,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931713050] [2021-10-21 19:31:49,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931713050] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:49,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:49,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:49,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275798440] [2021-10-21 19:31:49,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:49,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:49,618 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) [2021-10-21 19:31:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:49,685 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2021-10-21 19:31:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:49,689 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 [2021-10-21 19:31:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:49,700 INFO L225 Difference]: With dead ends: 53 [2021-10-21 19:31:49,701 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 19:31:49,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 19:31:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-10-21 19:31:49,749 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) [2021-10-21 19:31:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-10-21 19:31:49,755 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2021-10-21 19:31:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:49,756 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-10-21 19:31:49,757 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) [2021-10-21 19:31:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-10-21 19:31:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:31:49,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:49,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:49,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:31:49,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:49,766 INFO L82 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2021-10-21 19:31:49,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:49,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185016532] [2021-10-21 19:31:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:49,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:49,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:49,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185016532] [2021-10-21 19:31:49,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185016532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:49,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:49,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:49,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653966567] [2021-10-21 19:31:49,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:49,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:49,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:49,891 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) [2021-10-21 19:31:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:49,925 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2021-10-21 19:31:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:49,927 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 [2021-10-21 19:31:49,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:49,929 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:31:49,929 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 19:31:49,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 19:31:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-10-21 19:31:49,941 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) [2021-10-21 19:31:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2021-10-21 19:31:49,946 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2021-10-21 19:31:49,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:49,947 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2021-10-21 19:31:49,947 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) [2021-10-21 19:31:49,947 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2021-10-21 19:31:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:31:49,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:49,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:49,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:31:49,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:49,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:49,953 INFO L82 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2021-10-21 19:31:49,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:49,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429376787] [2021-10-21 19:31:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:49,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429376787] [2021-10-21 19:31:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429376787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772440878] [2021-10-21 19:31:50,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,086 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) [2021-10-21 19:31:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,119 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2021-10-21 19:31:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,131 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 [2021-10-21 19:31:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,134 INFO L225 Difference]: With dead ends: 60 [2021-10-21 19:31:50,134 INFO L226 Difference]: Without dead ends: 42 [2021-10-21 19:31:50,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-21 19:31:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-21 19:31:50,147 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) [2021-10-21 19:31:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2021-10-21 19:31:50,157 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2021-10-21 19:31:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,158 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2021-10-21 19:31:50,158 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) [2021-10-21 19:31:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2021-10-21 19:31:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:31:50,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:31:50,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2021-10-21 19:31:50,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154263410] [2021-10-21 19:31:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154263410] [2021-10-21 19:31:50,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154263410] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097856449] [2021-10-21 19:31:50,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,253 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) [2021-10-21 19:31:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,285 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2021-10-21 19:31:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,286 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 [2021-10-21 19:31:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,288 INFO L225 Difference]: With dead ends: 73 [2021-10-21 19:31:50,289 INFO L226 Difference]: Without dead ends: 71 [2021-10-21 19:31:50,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-21 19:31:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2021-10-21 19:31:50,301 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) [2021-10-21 19:31:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2021-10-21 19:31:50,302 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2021-10-21 19:31:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,303 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2021-10-21 19:31:50,303 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) [2021-10-21 19:31:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2021-10-21 19:31:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:31:50,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:31:50,306 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2021-10-21 19:31:50,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113751614] [2021-10-21 19:31:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113751614] [2021-10-21 19:31:50,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113751614] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852601157] [2021-10-21 19:31:50,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,350 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) [2021-10-21 19:31:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,368 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2021-10-21 19:31:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,368 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 [2021-10-21 19:31:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,370 INFO L225 Difference]: With dead ends: 121 [2021-10-21 19:31:50,370 INFO L226 Difference]: Without dead ends: 73 [2021-10-21 19:31:50,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-21 19:31:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-10-21 19:31:50,379 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) [2021-10-21 19:31:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2021-10-21 19:31:50,381 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2021-10-21 19:31:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,382 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2021-10-21 19:31:50,382 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) [2021-10-21 19:31:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2021-10-21 19:31:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:31:50,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:31:50,384 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2021-10-21 19:31:50,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046918390] [2021-10-21 19:31:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046918390] [2021-10-21 19:31:50,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046918390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732091421] [2021-10-21 19:31:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,434 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) [2021-10-21 19:31:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,455 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2021-10-21 19:31:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,456 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 [2021-10-21 19:31:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,459 INFO L225 Difference]: With dead ends: 108 [2021-10-21 19:31:50,459 INFO L226 Difference]: Without dead ends: 75 [2021-10-21 19:31:50,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-21 19:31:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-10-21 19:31:50,472 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) [2021-10-21 19:31:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2021-10-21 19:31:50,475 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2021-10-21 19:31:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,476 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2021-10-21 19:31:50,476 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) [2021-10-21 19:31:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2021-10-21 19:31:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:31:50,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:31:50,480 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,481 INFO L82 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2021-10-21 19:31:50,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336404872] [2021-10-21 19:31:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336404872] [2021-10-21 19:31:50,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336404872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878146841] [2021-10-21 19:31:50,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,567 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) [2021-10-21 19:31:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,603 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2021-10-21 19:31:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,604 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 [2021-10-21 19:31:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,606 INFO L225 Difference]: With dead ends: 201 [2021-10-21 19:31:50,607 INFO L226 Difference]: Without dead ends: 135 [2021-10-21 19:31:50,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-21 19:31:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-10-21 19:31:50,631 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) [2021-10-21 19:31:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2021-10-21 19:31:50,635 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2021-10-21 19:31:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,635 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2021-10-21 19:31:50,636 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) [2021-10-21 19:31:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2021-10-21 19:31:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:31:50,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:31:50,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2021-10-21 19:31:50,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166462173] [2021-10-21 19:31:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166462173] [2021-10-21 19:31:50,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166462173] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533938767] [2021-10-21 19:31:50,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,695 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) [2021-10-21 19:31:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,726 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2021-10-21 19:31:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,727 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 [2021-10-21 19:31:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,728 INFO L225 Difference]: With dead ends: 161 [2021-10-21 19:31:50,728 INFO L226 Difference]: Without dead ends: 159 [2021-10-21 19:31:50,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-21 19:31:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-10-21 19:31:50,740 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) [2021-10-21 19:31:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2021-10-21 19:31:50,746 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2021-10-21 19:31:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,747 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2021-10-21 19:31:50,747 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) [2021-10-21 19:31:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2021-10-21 19:31:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:31:50,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:31:50,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2021-10-21 19:31:50,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729151845] [2021-10-21 19:31:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729151845] [2021-10-21 19:31:50,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729151845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810236228] [2021-10-21 19:31:50,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,812 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) [2021-10-21 19:31:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,848 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2021-10-21 19:31:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,854 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 [2021-10-21 19:31:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,856 INFO L225 Difference]: With dead ends: 229 [2021-10-21 19:31:50,856 INFO L226 Difference]: Without dead ends: 227 [2021-10-21 19:31:50,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-21 19:31:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2021-10-21 19:31:50,870 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) [2021-10-21 19:31:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2021-10-21 19:31:50,872 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2021-10-21 19:31:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,872 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2021-10-21 19:31:50,873 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) [2021-10-21 19:31:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2021-10-21 19:31:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:31:50,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:31:50,874 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2021-10-21 19:31:50,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330318932] [2021-10-21 19:31:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330318932] [2021-10-21 19:31:50,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330318932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203423933] [2021-10-21 19:31:50,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,904 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) [2021-10-21 19:31:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:50,922 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2021-10-21 19:31:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:50,922 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 [2021-10-21 19:31:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:50,924 INFO L225 Difference]: With dead ends: 437 [2021-10-21 19:31:50,925 INFO L226 Difference]: Without dead ends: 251 [2021-10-21 19:31:50,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-21 19:31:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-10-21 19:31:50,951 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) [2021-10-21 19:31:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2021-10-21 19:31:50,953 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2021-10-21 19:31:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:50,953 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2021-10-21 19:31:50,953 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) [2021-10-21 19:31:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2021-10-21 19:31:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:31:50,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:50,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:50,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:31:50,955 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:50,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2021-10-21 19:31:50,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:50,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231160338] [2021-10-21 19:31:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:50,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:50,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:50,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231160338] [2021-10-21 19:31:50,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231160338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:50,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:50,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:50,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911925110] [2021-10-21 19:31:50,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:50,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:50,990 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) [2021-10-21 19:31:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:51,019 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2021-10-21 19:31:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:51,020 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 [2021-10-21 19:31:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:51,022 INFO L225 Difference]: With dead ends: 381 [2021-10-21 19:31:51,022 INFO L226 Difference]: Without dead ends: 263 [2021-10-21 19:31:51,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-21 19:31:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-10-21 19:31:51,034 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) [2021-10-21 19:31:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2021-10-21 19:31:51,036 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2021-10-21 19:31:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:51,036 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2021-10-21 19:31:51,036 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) [2021-10-21 19:31:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2021-10-21 19:31:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:31:51,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:51,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:51,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:31:51,038 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:51,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:51,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2021-10-21 19:31:51,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:51,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167036682] [2021-10-21 19:31:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:51,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:51,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:51,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167036682] [2021-10-21 19:31:51,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167036682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:51,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:51,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:51,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794543072] [2021-10-21 19:31:51,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:51,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:51,110 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) [2021-10-21 19:31:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:51,162 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2021-10-21 19:31:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:51,163 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 [2021-10-21 19:31:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:51,172 INFO L225 Difference]: With dead ends: 423 [2021-10-21 19:31:51,182 INFO L226 Difference]: Without dead ends: 421 [2021-10-21 19:31:51,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-10-21 19:31:51,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2021-10-21 19:31:51,204 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) [2021-10-21 19:31:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2021-10-21 19:31:51,206 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2021-10-21 19:31:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:51,207 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2021-10-21 19:31:51,210 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) [2021-10-21 19:31:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2021-10-21 19:31:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:31:51,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:51,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:31:51,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 19:31:51,212 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:31:51,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:51,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2021-10-21 19:31:51,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:31:51,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767457805] [2021-10-21 19:31:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:51,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:31:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:31:51,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:31:51,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767457805] [2021-10-21 19:31:51,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767457805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:51,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:51,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:31:51,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266568373] [2021-10-21 19:31:51,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:31:51,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:31:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:31:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:51,276 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) [2021-10-21 19:31:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:51,303 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2021-10-21 19:31:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:31:51,303 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 [2021-10-21 19:31:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:51,304 INFO L225 Difference]: With dead ends: 853 [2021-10-21 19:31:51,304 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:31:51,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:31:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:31:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:31:51,306 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) [2021-10-21 19:31:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:31:51,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-21 19:31:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:51,307 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:31:51,307 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) [2021-10-21 19:31:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:31:51,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:31:51,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:31:51,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:31:51,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:31:51,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:31:51,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:31:51,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:31:51,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:31:51,329 INFO L860 garLoopResultBuilder]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2021-10-21 19:31:51,329 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-21 19:31:51,330 INFO L857 garLoopResultBuilder]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,330 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:31:51,330 INFO L860 garLoopResultBuilder]: At program point L94(lines 6 95) the Hoare annotation is: true [2021-10-21 19:31:51,330 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:31:51,330 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:31:51,330 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-10-21 19:31:51,331 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2021-10-21 19:31:51,331 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-21 19:31:51,331 INFO L853 garLoopResultBuilder]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2021-10-21 19:31:51,332 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,332 INFO L857 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2021-10-21 19:31:51,332 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:31:51,332 INFO L860 garLoopResultBuilder]: At program point L91(lines 7 95) the Hoare annotation is: true [2021-10-21 19:31:51,332 INFO L857 garLoopResultBuilder]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,333 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-21 19:31:51,333 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,333 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,333 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,333 INFO L857 garLoopResultBuilder]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,334 INFO L857 garLoopResultBuilder]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,334 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-21 19:31:51,334 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-10-21 19:31:51,334 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2021-10-21 19:31:51,339 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:31:51,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:31:51 BoogieIcfgContainer [2021-10-21 19:31:51,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:31:51,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:31:51,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:31:51,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:31:51,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:49" (3/4) ... [2021-10-21 19:31:51,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:31:51,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 19:31:51,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:31:51,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:31:51,367 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:31:51,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:31:51,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:31:51,421 INFO L168 Benchmark]: Toolchain (without parser) took 3141.66 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 69.4 MB in the beginning and 98.5 MB in the end (delta: -29.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,422 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 107.0 MB. Free memory was 85.6 MB in the beginning and 85.5 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:31:51,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.09 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 81.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,423 INFO L168 Benchmark]: Boogie Preprocessor took 35.83 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.1 MB in the end (delta: 989.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,424 INFO L168 Benchmark]: RCFGBuilder took 378.15 ms. Allocated memory is still 107.0 MB. Free memory was 79.1 MB in the beginning and 68.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,424 INFO L168 Benchmark]: TraceAbstraction took 2290.70 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 67.9 MB in the beginning and 101.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,424 INFO L168 Benchmark]: Witness Printer took 69.87 ms. Allocated memory is still 144.7 MB. Free memory was 101.6 MB in the beginning and 98.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:51,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 107.0 MB. Free memory was 85.6 MB in the beginning and 85.5 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.09 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 81.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.83 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 79.1 MB in the end (delta: 989.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 378.15 ms. Allocated memory is still 107.0 MB. Free memory was 79.1 MB in the beginning and 68.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2290.70 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 67.9 MB in the beginning and 101.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 69.87 ms. Allocated memory is still 144.7 MB. Free memory was 101.6 MB in the beginning and 98.5 MB in the end (delta: 3.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 2181.5ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 45.6ms, AutomataDifference: 591.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 17.6ms, InitialAbstractionConstructionTime: 26.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 574 SDtfs, 264 SDslu, 358 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 156.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 226.7ms AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 52.3ms SsaConstructionTime, 214.7ms SatisfiabilityAnalysisTime, 629.1ms 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! [2021-10-21 19:31:51,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43902b26-9227-49af-86d4-a031613af650/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...