./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.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_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/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_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/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_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/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 f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:51:04,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:51:04,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:51:04,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:51:04,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:51:04,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:51:04,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:51:04,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:51:04,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:51:04,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:51:04,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:51:04,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:51:04,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:51:04,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:51:04,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:51:04,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:51:04,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:51:04,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:51:04,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:51:04,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:51:04,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:51:04,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:51:04,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:51:04,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:51:04,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:51:04,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:51:04,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:51:04,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:51:04,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:51:04,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:51:04,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:51:04,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:51:04,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:51:04,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:51:04,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:51:04,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:51:04,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:51:04,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:51:04,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:51:04,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:51:04,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:51:04,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:51:05,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:51:05,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:51:05,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:51:05,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:51:05,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:51:05,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:51:05,031 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:51:05,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:51:05,031 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:51:05,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:51:05,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:51:05,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:51:05,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:51:05,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:51:05,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:51:05,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:51:05,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:51:05,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:51:05,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:51:05,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:51:05,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:51:05,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:51:05,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:05,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:51:05,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:51:05,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:51:05,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:51:05,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:51:05,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:51:05,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:51:05,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:51:05,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:51:05,039 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_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 [2021-10-21 19:51:05,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:51:05,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:51:05,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:51:05,340 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:51:05,341 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:51:05,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-21 19:51:05,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/data/16f536406/6082f85ed7d644bdab464321057a5ac8/FLAG45c8b61a5 [2021-10-21 19:51:05,944 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:51:05,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-21 19:51:05,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/data/16f536406/6082f85ed7d644bdab464321057a5ac8/FLAG45c8b61a5 [2021-10-21 19:51:06,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/data/16f536406/6082f85ed7d644bdab464321057a5ac8 [2021-10-21 19:51:06,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:51:06,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:51:06,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:06,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:51:06,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:51:06,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565521f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06, skipping insertion in model container [2021-10-21 19:51:06,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:51:06,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:51:06,655 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_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-21 19:51:06,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:06,677 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:51:06,752 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_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-21 19:51:06,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:06,788 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:51:06,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06 WrapperNode [2021-10-21 19:51:06,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:06,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:06,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:51:06,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:51:06,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:06,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:51:06,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:51:06,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:51:06,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:51:06,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:51:06,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:51:06,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:51:06,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (1/1) ... [2021-10-21 19:51:06,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:06,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:51:07,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:51:07,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:51:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:51:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:51:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:51:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:51:08,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:51:08,026 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-10-21 19:51:08,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:08 BoogieIcfgContainer [2021-10-21 19:51:08,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:51:08,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:51:08,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:51:08,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:51:08,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:51:06" (1/3) ... [2021-10-21 19:51:08,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791fdffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:08, skipping insertion in model container [2021-10-21 19:51:08,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:06" (2/3) ... [2021-10-21 19:51:08,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791fdffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:08, skipping insertion in model container [2021-10-21 19:51:08,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:08" (3/3) ... [2021-10-21 19:51:08,039 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2021-10-21 19:51:08,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:51:08,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 19:51:08,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:51:08,103 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 19:51:08,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:51:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 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 19:51:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:51:08,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:08,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:08,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2021-10-21 19:51:08,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:08,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792393069] [2021-10-21 19:51:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:08,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:08,393 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 19:51:08,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:08,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792393069] [2021-10-21 19:51:08,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792393069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:08,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:08,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:51:08,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504175789] [2021-10-21 19:51:08,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:51:08,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:51:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:51:08,417 INFO L87 Difference]: Start difference. First operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 19:51:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:08,454 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-10-21 19:51:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:51:08,455 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 19:51:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:08,470 INFO L225 Difference]: With dead ends: 168 [2021-10-21 19:51:08,470 INFO L226 Difference]: Without dead ends: 83 [2021-10-21 19:51:08,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:51:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-21 19:51:08,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-21 19:51:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.4625) internal successors, (117), 82 states have internal predecessors, (117), 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 19:51:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-10-21 19:51:08,525 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-10-21 19:51:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:08,527 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-10-21 19:51:08,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 19:51:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-10-21 19:51:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:51:08,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:08,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:08,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:51:08,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2021-10-21 19:51:08,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:08,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609967270] [2021-10-21 19:51:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:08,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:08,714 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 19:51:08,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:08,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609967270] [2021-10-21 19:51:08,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609967270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:08,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:08,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:51:08,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518822346] [2021-10-21 19:51:08,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:51:08,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:51:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:51:08,718 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 19:51:08,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:08,742 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-10-21 19:51:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:51:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-21 19:51:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:08,747 INFO L225 Difference]: With dead ends: 83 [2021-10-21 19:51:08,747 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:51:08,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:51:08,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:51:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 19:51:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 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 19:51:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-10-21 19:51:08,754 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-10-21 19:51:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:08,755 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-10-21 19:51:08,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 19:51:08,755 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-10-21 19:51:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:51:08,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:08,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:08,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:51:08,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:08,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:08,761 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2021-10-21 19:51:08,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:08,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181344284] [2021-10-21 19:51:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:08,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:08,882 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 19:51:08,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:08,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181344284] [2021-10-21 19:51:08,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181344284] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:08,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:08,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:51:08,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200306331] [2021-10-21 19:51:08,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:51:08,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:51:08,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:51:08,886 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 19:51:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:08,939 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-10-21 19:51:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:51:08,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-21 19:51:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:08,944 INFO L225 Difference]: With dead ends: 68 [2021-10-21 19:51:08,944 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:51:08,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:51:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:51:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 19:51:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 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 19:51:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-10-21 19:51:08,954 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-10-21 19:51:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:08,955 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-10-21 19:51:08,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 19:51:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-10-21 19:51:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:51:08,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:08,956 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:08,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:51:08,957 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:08,957 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2021-10-21 19:51:08,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:08,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355004434] [2021-10-21 19:51:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:08,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:09,029 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 19:51:09,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:09,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355004434] [2021-10-21 19:51:09,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355004434] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:09,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:09,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:51:09,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094110687] [2021-10-21 19:51:09,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:51:09,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:51:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:51:09,032 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 19:51:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:09,065 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-10-21 19:51:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:51:09,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-10-21 19:51:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:09,066 INFO L225 Difference]: With dead ends: 89 [2021-10-21 19:51:09,067 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 19:51:09,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:51:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 19:51:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-21 19:51:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 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 19:51:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-10-21 19:51:09,074 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-10-21 19:51:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:09,075 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-10-21 19:51:09,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 19:51:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-10-21 19:51:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:51:09,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:09,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:51:09,077 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2021-10-21 19:51:09,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:09,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462665340] [2021-10-21 19:51:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:09,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:09,171 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 19:51:09,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:09,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462665340] [2021-10-21 19:51:09,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462665340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:09,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:09,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:51:09,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442977691] [2021-10-21 19:51:09,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:51:09,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:51:09,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:51:09,174 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 19:51:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:09,272 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2021-10-21 19:51:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:51:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-10-21 19:51:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:09,276 INFO L225 Difference]: With dead ends: 266 [2021-10-21 19:51:09,277 INFO L226 Difference]: Without dead ends: 216 [2021-10-21 19:51:09,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:51:09,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-21 19:51:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 100. [2021-10-21 19:51:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 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 19:51:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-10-21 19:51:09,310 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 29 [2021-10-21 19:51:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:09,311 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-10-21 19:51:09,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 19:51:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-10-21 19:51:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:51:09,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:09,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:09,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:51:09,318 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash 331369175, now seen corresponding path program 1 times [2021-10-21 19:51:09,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:09,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877778396] [2021-10-21 19:51:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:09,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:09,421 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 19:51:09,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:09,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877778396] [2021-10-21 19:51:09,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877778396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:09,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:09,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:51:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984748369] [2021-10-21 19:51:09,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:51:09,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:51:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:51:09,427 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 19:51:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:09,530 INFO L93 Difference]: Finished difference Result 280 states and 394 transitions. [2021-10-21 19:51:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:51:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2021-10-21 19:51:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:09,539 INFO L225 Difference]: With dead ends: 280 [2021-10-21 19:51:09,539 INFO L226 Difference]: Without dead ends: 278 [2021-10-21 19:51:09,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:51:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-21 19:51:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-10-21 19:51:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.393939393939394) internal successors, (138), 99 states have internal predecessors, (138), 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 19:51:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2021-10-21 19:51:09,574 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2021-10-21 19:51:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:09,574 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2021-10-21 19:51:09,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 19:51:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2021-10-21 19:51:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:51:09,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:09,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:09,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:51:09,579 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:09,579 INFO L82 PathProgramCache]: Analyzing trace with hash 261712181, now seen corresponding path program 1 times [2021-10-21 19:51:09,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:09,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511543020] [2021-10-21 19:51:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:09,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:09,662 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 19:51:09,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:09,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511543020] [2021-10-21 19:51:09,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511543020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:09,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:09,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:51:09,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596748348] [2021-10-21 19:51:09,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:51:09,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:51:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:51:09,667 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 19:51:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:09,712 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2021-10-21 19:51:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:51:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-10-21 19:51:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:09,715 INFO L225 Difference]: With dead ends: 270 [2021-10-21 19:51:09,716 INFO L226 Difference]: Without dead ends: 176 [2021-10-21 19:51:09,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:51:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-21 19:51:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-10-21 19:51:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 105 states have internal predecessors, (144), 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 19:51:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2021-10-21 19:51:09,742 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 33 [2021-10-21 19:51:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:09,743 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2021-10-21 19:51:09,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 19:51:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2021-10-21 19:51:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:51:09,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:09,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:09,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:51:09,746 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:09,747 INFO L82 PathProgramCache]: Analyzing trace with hash -325093833, now seen corresponding path program 1 times [2021-10-21 19:51:09,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:09,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322798141] [2021-10-21 19:51:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:09,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:09,842 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 19:51:09,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:09,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322798141] [2021-10-21 19:51:09,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322798141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:09,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:09,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:51:09,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74880829] [2021-10-21 19:51:09,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:51:09,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:51:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:51:09,845 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 19:51:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:09,910 INFO L93 Difference]: Finished difference Result 288 states and 390 transitions. [2021-10-21 19:51:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:51:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2021-10-21 19:51:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:09,913 INFO L225 Difference]: With dead ends: 288 [2021-10-21 19:51:09,913 INFO L226 Difference]: Without dead ends: 188 [2021-10-21 19:51:09,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:51:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-21 19:51:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 110. [2021-10-21 19:51:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3577981651376148) internal successors, (148), 109 states have internal predecessors, (148), 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 19:51:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2021-10-21 19:51:09,928 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 33 [2021-10-21 19:51:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:09,929 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2021-10-21 19:51:09,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 19:51:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2021-10-21 19:51:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:51:09,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:09,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:09,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:51:09,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:09,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1604957511, now seen corresponding path program 1 times [2021-10-21 19:51:09,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:09,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367196419] [2021-10-21 19:51:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:09,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:09,987 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 19:51:09,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:09,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367196419] [2021-10-21 19:51:09,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367196419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:09,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:09,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:51:09,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273913383] [2021-10-21 19:51:09,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:51:09,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:51:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:51:09,990 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 19:51:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:10,020 INFO L93 Difference]: Finished difference Result 262 states and 352 transitions. [2021-10-21 19:51:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:51:10,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-10-21 19:51:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:10,022 INFO L225 Difference]: With dead ends: 262 [2021-10-21 19:51:10,022 INFO L226 Difference]: Without dead ends: 158 [2021-10-21 19:51:10,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:51:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-21 19:51:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-21 19:51:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.3121019108280254) internal successors, (206), 157 states have internal predecessors, (206), 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 19:51:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 206 transitions. [2021-10-21 19:51:10,045 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 206 transitions. Word has length 33 [2021-10-21 19:51:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:10,045 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 206 transitions. [2021-10-21 19:51:10,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 19:51:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 206 transitions. [2021-10-21 19:51:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:51:10,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:10,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:10,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:51:10,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash -447661573, now seen corresponding path program 1 times [2021-10-21 19:51:10,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:10,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115642439] [2021-10-21 19:51:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:10,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:10,141 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 19:51:10,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:10,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115642439] [2021-10-21 19:51:10,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115642439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:10,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:10,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:51:10,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704143516] [2021-10-21 19:51:10,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:51:10,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:51:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:51:10,146 INFO L87 Difference]: Start difference. First operand 158 states and 206 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 19:51:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:10,359 INFO L93 Difference]: Finished difference Result 482 states and 630 transitions. [2021-10-21 19:51:10,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:51:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 34 [2021-10-21 19:51:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:10,362 INFO L225 Difference]: With dead ends: 482 [2021-10-21 19:51:10,362 INFO L226 Difference]: Without dead ends: 330 [2021-10-21 19:51:10,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:51:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-21 19:51:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 158. [2021-10-21 19:51:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.286624203821656) internal successors, (202), 157 states have internal predecessors, (202), 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 19:51:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 202 transitions. [2021-10-21 19:51:10,384 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 202 transitions. Word has length 34 [2021-10-21 19:51:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:10,384 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 202 transitions. [2021-10-21 19:51:10,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 19:51:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 202 transitions. [2021-10-21 19:51:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 19:51:10,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:10,386 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:10,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:51:10,386 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2059222374, now seen corresponding path program 1 times [2021-10-21 19:51:10,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:10,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158701381] [2021-10-21 19:51:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:10,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:51:10,449 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:51:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:51:10,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:51:10,556 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:51:10,557 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:51:10,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:51:10,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:51:10,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:51:10,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:51:10,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:51:10 BoogieIcfgContainer [2021-10-21 19:51:10,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:51:10,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:51:10,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:51:10,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:51:10,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:08" (3/4) ... [2021-10-21 19:51:10,716 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:51:10,858 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:51:10,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:51:10,860 INFO L168 Benchmark]: Toolchain (without parser) took 4590.94 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 55.8 MB in the beginning and 96.4 MB in the end (delta: -40.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,861 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:51:10,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.55 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 61.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.89 ms. Allocated memory is still 96.5 MB. Free memory was 61.4 MB in the beginning and 58.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,862 INFO L168 Benchmark]: Boogie Preprocessor took 77.47 ms. Allocated memory is still 96.5 MB. Free memory was 58.2 MB in the beginning and 55.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,863 INFO L168 Benchmark]: RCFGBuilder took 1062.32 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 55.8 MB in the beginning and 79.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,863 INFO L168 Benchmark]: TraceAbstraction took 2681.91 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 79.3 MB in the beginning and 116.3 MB in the end (delta: -37.0 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,863 INFO L168 Benchmark]: Witness Printer took 144.43 ms. Allocated memory is still 148.9 MB. Free memory was 116.3 MB in the beginning and 96.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:10,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.55 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 61.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.89 ms. Allocated memory is still 96.5 MB. Free memory was 61.4 MB in the beginning and 58.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.47 ms. Allocated memory is still 96.5 MB. Free memory was 58.2 MB in the beginning and 55.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1062.32 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 55.8 MB in the beginning and 79.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2681.91 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 79.3 MB in the beginning and 116.3 MB in the end (delta: -37.0 MB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. * Witness Printer took 144.43 ms. Allocated memory is still 148.9 MB. Free memory was 116.3 MB in the beginning and 96.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 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 - CounterExampleResult [Line: 774]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L591] int pumpRunning = 0; [L592] int systemActive = 1; [L843] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L916] int retValue_acc ; [L917] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] int retValue_acc ; [L837] retValue_acc = 1 [L838] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L923] tmp = valid_product() [L925] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L441] COND TRUE waterLevel < 2 [L442] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L599] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE ! pumpRunning [L743] int retValue_acc ; [L744] int tmp ; [L745] int tmp___0 ; [L503] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(waterLevel < 2) [L510] retValue_acc = 0 [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L749] tmp = isHighWaterSensorDry() [L751] COND FALSE !(\read(tmp)) [L754] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] retValue_acc = tmp___0 [L757] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L633] tmp = isHighWaterLevel() [L635] COND TRUE \read(tmp) [L662] int tmp ; [L687] int retValue_acc ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = isMethaneLevelCritical() [L693] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] tmp = isMethaneAlarm() [L668] COND FALSE !(\read(tmp)) [L656] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L780] int tmp ; [L781] int tmp___0 ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() [L787] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L538] tmp = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L453] COND FALSE !(\read(methaneLevelCritical)) [L456] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L429] COND TRUE waterLevel > 0 [L430] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L606] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L631] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L780] int tmp ; [L781] int tmp___0 ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L698] int retValue_acc ; [L701] retValue_acc = pumpRunning [L702] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L774] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 774]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2468.2ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 29.2ms, AutomataDifference: 792.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 746 SDtfs, 1185 SDslu, 1196 SDs, 0 SdLazy, 173 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 228.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 215.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=9, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 200.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 616 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.2ms SsaConstructionTime, 402.1ms SatisfiabilityAnalysisTime, 628.7ms InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:51:10,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd2d3bd-c5f6-436b-b58f-6295edd0a1b4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...