./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product43.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_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/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_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/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_2aeacea9-58df-43be-a7fd-a1d2d7baf183/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 01b43f7e7ecd5c44c6b49183e9415dee9518d36285d69624307f5a03549da1bb ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:37:14,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:37:14,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:37:14,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:37:14,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:37:14,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:37:14,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:37:14,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:37:14,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:37:14,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:37:14,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:37:14,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:37:14,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:37:14,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:37:14,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:37:14,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:37:14,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:37:14,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:37:14,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:37:14,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:37:14,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:37:14,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:37:14,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:37:14,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:37:14,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:37:14,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:37:14,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:37:14,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:37:14,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:37:14,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:37:14,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:37:14,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:37:14,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:37:14,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:37:14,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:37:14,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:37:14,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:37:14,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:37:14,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:37:14,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:37:14,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:37:14,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:37:14,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:37:14,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:37:14,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:37:14,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:37:14,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:37:14,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:37:14,682 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:37:14,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:37:14,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:37:14,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:37:14,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:37:14,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:37:14,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:37:14,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:37:14,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:37:14,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:37:14,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:37:14,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:37:14,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:37:14,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:37:14,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:37:14,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:37:14,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:37:14,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:37:14,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:37:14,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:37:14,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:37:14,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:37:14,686 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:37:14,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:37:14,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:37:14,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:37:14,687 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_2aeacea9-58df-43be-a7fd-a1d2d7baf183/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01b43f7e7ecd5c44c6b49183e9415dee9518d36285d69624307f5a03549da1bb [2021-10-21 19:37:14,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:37:14,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:37:14,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:37:14,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:37:14,989 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:37:14,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c [2021-10-21 19:37:15,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/data/722b0f44e/13d6173a01d248ff9bfa571f77b7be3d/FLAG1dea84cf3 [2021-10-21 19:37:15,593 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:37:15,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c [2021-10-21 19:37:15,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/data/722b0f44e/13d6173a01d248ff9bfa571f77b7be3d/FLAG1dea84cf3 [2021-10-21 19:37:15,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/data/722b0f44e/13d6173a01d248ff9bfa571f77b7be3d [2021-10-21 19:37:15,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:37:15,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:37:15,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:37:15,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:37:15,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:37:15,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:37:15" (1/1) ... [2021-10-21 19:37:15,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba9cb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:15, skipping insertion in model container [2021-10-21 19:37:15,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:37:15" (1/1) ... [2021-10-21 19:37:15,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:37:16,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:37:16,419 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_2aeacea9-58df-43be-a7fd-a1d2d7baf183/sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c[6381,6394] [2021-10-21 19:37:16,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:37:16,489 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:37:16,559 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_2aeacea9-58df-43be-a7fd-a1d2d7baf183/sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c[6381,6394] [2021-10-21 19:37:16,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:37:16,665 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:37:16,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16 WrapperNode [2021-10-21 19:37:16,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:37:16,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:37:16,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:37:16,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:37:16,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:37:16,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:37:16,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:37:16,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:37:16,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:37:16,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:37:16,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:37:16,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:37:16,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (1/1) ... [2021-10-21 19:37:16,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:37:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:16,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:37:16,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:37:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:37:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:37:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:37:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:37:17,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:37:17,868 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-10-21 19:37:17,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:17 BoogieIcfgContainer [2021-10-21 19:37:17,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:37:17,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:37:17,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:37:17,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:37:17,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:37:15" (1/3) ... [2021-10-21 19:37:17,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37585a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:37:17, skipping insertion in model container [2021-10-21 19:37:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:16" (2/3) ... [2021-10-21 19:37:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37585a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:37:17, skipping insertion in model container [2021-10-21 19:37:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:17" (3/3) ... [2021-10-21 19:37:17,883 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2021-10-21 19:37:17,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:37:17,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 19:37:17,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:37:17,960 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 19:37:17,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:37:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 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 19:37:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:37:17,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:17,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:37:17,985 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 19:37:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:17,990 INFO L82 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2021-10-21 19:37:17,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:17,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970495150] [2021-10-21 19:37:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:17,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:18,284 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 19:37:18,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:18,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970495150] [2021-10-21 19:37:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970495150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:18,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:18,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:18,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838823391] [2021-10-21 19:37:18,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:37:18,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:37:18,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:37:18,308 INFO L87 Difference]: Start difference. First operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 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 19:37:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:18,344 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2021-10-21 19:37:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:37:18,346 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 19:37:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:18,355 INFO L225 Difference]: With dead ends: 172 [2021-10-21 19:37:18,355 INFO L226 Difference]: Without dead ends: 85 [2021-10-21 19:37:18,359 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 19:37:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-21 19:37:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-21 19:37:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 84 states have internal predecessors, (120), 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 19:37:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2021-10-21 19:37:18,398 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2021-10-21 19:37:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:18,398 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2021-10-21 19:37:18,398 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 19:37:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2021-10-21 19:37:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:37:18,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:18,400 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 19:37:18,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:37:18,401 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 19:37:18,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2021-10-21 19:37:18,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:18,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543184273] [2021-10-21 19:37:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:18,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:18,583 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 19:37:18,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:18,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543184273] [2021-10-21 19:37:18,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543184273] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:18,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:18,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088234060] [2021-10-21 19:37:18,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:18,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:18,589 INFO L87 Difference]: Start difference. First operand 85 states and 120 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 19:37:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:18,601 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-10-21 19:37:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:18,602 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 19:37:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:18,603 INFO L225 Difference]: With dead ends: 85 [2021-10-21 19:37:18,603 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 19:37:18,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 19:37:18,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-21 19:37:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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 19:37:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-21 19:37:18,611 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2021-10-21 19:37:18,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:18,611 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-21 19:37:18,611 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 19:37:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-21 19:37:18,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:37:18,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:18,614 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 19:37:18,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:37:18,614 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 19:37:18,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:18,615 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2021-10-21 19:37:18,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:18,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90745286] [2021-10-21 19:37:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:18,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:18,696 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 19:37:18,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:18,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90745286] [2021-10-21 19:37:18,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90745286] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:18,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:18,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:18,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770991782] [2021-10-21 19:37:18,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:18,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:18,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:18,699 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 19:37:18,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:18,715 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2021-10-21 19:37:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:18,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 19:37:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:18,717 INFO L225 Difference]: With dead ends: 105 [2021-10-21 19:37:18,717 INFO L226 Difference]: Without dead ends: 72 [2021-10-21 19:37:18,718 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 19:37:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-21 19:37:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-10-21 19:37:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 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 19:37:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2021-10-21 19:37:18,729 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2021-10-21 19:37:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:18,730 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2021-10-21 19:37:18,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 19:37:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2021-10-21 19:37:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:37:18,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:18,731 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 19:37:18,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:37:18,732 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 19:37:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:18,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2021-10-21 19:37:18,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:18,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063961060] [2021-10-21 19:37:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:18,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:18,792 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 19:37:18,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:18,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063961060] [2021-10-21 19:37:18,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063961060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:18,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:18,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:18,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779348158] [2021-10-21 19:37:18,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:18,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:18,795 INFO L87 Difference]: Start difference. First operand 68 states and 99 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 19:37:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:18,832 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2021-10-21 19:37:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:18,833 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 19:37:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:18,835 INFO L225 Difference]: With dead ends: 171 [2021-10-21 19:37:18,837 INFO L226 Difference]: Without dead ends: 109 [2021-10-21 19:37:18,838 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 19:37:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-21 19:37:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-10-21 19:37:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 106 states have internal predecessors, (155), 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 19:37:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2021-10-21 19:37:18,854 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2021-10-21 19:37:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:18,854 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2021-10-21 19:37:18,854 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 19:37:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2021-10-21 19:37:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:37:18,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:18,856 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] [2021-10-21 19:37:18,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:37:18,857 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 19:37:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:18,858 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2021-10-21 19:37:18,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:18,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415737105] [2021-10-21 19:37:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:18,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:18,983 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 19:37:18,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:18,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415737105] [2021-10-21 19:37:18,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415737105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:18,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:18,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:37:18,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740887951] [2021-10-21 19:37:18,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:37:18,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:37:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:18,991 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 19:37:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:19,121 INFO L93 Difference]: Finished difference Result 535 states and 792 transitions. [2021-10-21 19:37:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:37:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2021-10-21 19:37:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:19,127 INFO L225 Difference]: With dead ends: 535 [2021-10-21 19:37:19,128 INFO L226 Difference]: Without dead ends: 434 [2021-10-21 19:37:19,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:37:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-10-21 19:37:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 198. [2021-10-21 19:37:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.4365482233502538) internal successors, (283), 197 states have internal predecessors, (283), 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 19:37:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 283 transitions. [2021-10-21 19:37:19,188 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 283 transitions. Word has length 25 [2021-10-21 19:37:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:19,188 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 283 transitions. [2021-10-21 19:37:19,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 19:37:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 283 transitions. [2021-10-21 19:37:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:37:19,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:19,191 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] [2021-10-21 19:37:19,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:37:19,191 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 19:37:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:19,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1044291748, now seen corresponding path program 1 times [2021-10-21 19:37:19,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:19,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906622020] [2021-10-21 19:37:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:19,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:19,276 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 19:37:19,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:19,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906622020] [2021-10-21 19:37:19,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906622020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:19,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:19,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:37:19,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631144150] [2021-10-21 19:37:19,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:37:19,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:37:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:19,280 INFO L87 Difference]: Start difference. First operand 198 states and 283 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:19,407 INFO L93 Difference]: Finished difference Result 572 states and 822 transitions. [2021-10-21 19:37:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:37:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:37:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:19,417 INFO L225 Difference]: With dead ends: 572 [2021-10-21 19:37:19,417 INFO L226 Difference]: Without dead ends: 570 [2021-10-21 19:37:19,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:37:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-21 19:37:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 198. [2021-10-21 19:37:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.4263959390862944) internal successors, (281), 197 states have internal predecessors, (281), 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 19:37:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 281 transitions. [2021-10-21 19:37:19,450 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 281 transitions. Word has length 26 [2021-10-21 19:37:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:19,450 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 281 transitions. [2021-10-21 19:37:19,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 281 transitions. [2021-10-21 19:37:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:37:19,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:19,458 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 19:37:19,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:37:19,458 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 19:37:19,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:19,459 INFO L82 PathProgramCache]: Analyzing trace with hash 895513141, now seen corresponding path program 1 times [2021-10-21 19:37:19,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:19,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605996856] [2021-10-21 19:37:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:19,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:19,551 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 19:37:19,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:19,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605996856] [2021-10-21 19:37:19,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605996856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:19,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:19,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:37:19,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451883565] [2021-10-21 19:37:19,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:37:19,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:37:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:19,554 INFO L87 Difference]: Start difference. First operand 198 states and 281 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 19:37:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:19,621 INFO L93 Difference]: Finished difference Result 550 states and 772 transitions. [2021-10-21 19:37:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:37:19,622 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 19:37:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:19,625 INFO L225 Difference]: With dead ends: 550 [2021-10-21 19:37:19,625 INFO L226 Difference]: Without dead ends: 358 [2021-10-21 19:37:19,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:37:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-21 19:37:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 210. [2021-10-21 19:37:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.4019138755980862) internal successors, (293), 209 states have internal predecessors, (293), 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 19:37:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 293 transitions. [2021-10-21 19:37:19,654 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 293 transitions. Word has length 33 [2021-10-21 19:37:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:19,656 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 293 transitions. [2021-10-21 19:37:19,656 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 19:37:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 293 transitions. [2021-10-21 19:37:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:37:19,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:19,660 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 19:37:19,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:37:19,661 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 19:37:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:19,661 INFO L82 PathProgramCache]: Analyzing trace with hash 308707127, now seen corresponding path program 1 times [2021-10-21 19:37:19,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:19,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714983390] [2021-10-21 19:37:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:19,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:19,729 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 19:37:19,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:19,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714983390] [2021-10-21 19:37:19,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714983390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:19,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:19,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:37:19,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474308738] [2021-10-21 19:37:19,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:37:19,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:37:19,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:37:19,732 INFO L87 Difference]: Start difference. First operand 210 states and 293 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 19:37:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:19,771 INFO L93 Difference]: Finished difference Result 510 states and 706 transitions. [2021-10-21 19:37:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:37:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 19:37:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:19,774 INFO L225 Difference]: With dead ends: 510 [2021-10-21 19:37:19,774 INFO L226 Difference]: Without dead ends: 306 [2021-10-21 19:37:19,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-10-21 19:37:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 218. [2021-10-21 19:37:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.3870967741935485) internal successors, (301), 217 states have internal predecessors, (301), 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 19:37:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 301 transitions. [2021-10-21 19:37:19,795 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 301 transitions. Word has length 33 [2021-10-21 19:37:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:19,796 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 301 transitions. [2021-10-21 19:37:19,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 19:37:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 301 transitions. [2021-10-21 19:37:19,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:37:19,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:19,798 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 19:37:19,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:37:19,799 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 19:37:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash -971156551, now seen corresponding path program 1 times [2021-10-21 19:37:19,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:19,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136731685] [2021-10-21 19:37:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:19,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:19,849 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 19:37:19,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:19,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136731685] [2021-10-21 19:37:19,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136731685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:19,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:19,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:19,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132754020] [2021-10-21 19:37:19,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:19,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:19,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:19,857 INFO L87 Difference]: Start difference. First operand 218 states and 301 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 19:37:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:19,904 INFO L93 Difference]: Finished difference Result 530 states and 726 transitions. [2021-10-21 19:37:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:19,904 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 19:37:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:19,906 INFO L225 Difference]: With dead ends: 530 [2021-10-21 19:37:19,906 INFO L226 Difference]: Without dead ends: 318 [2021-10-21 19:37:19,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-21 19:37:19,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2021-10-21 19:37:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.334384858044164) internal successors, (423), 317 states have internal predecessors, (423), 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 19:37:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 423 transitions. [2021-10-21 19:37:19,939 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 423 transitions. Word has length 33 [2021-10-21 19:37:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:19,940 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 423 transitions. [2021-10-21 19:37:19,940 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 19:37:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 423 transitions. [2021-10-21 19:37:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:37:19,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:19,941 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 19:37:19,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:37:19,942 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 19:37:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash 186139387, now seen corresponding path program 1 times [2021-10-21 19:37:19,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:19,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654615190] [2021-10-21 19:37:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:19,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:20,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:20,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654615190] [2021-10-21 19:37:20,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654615190] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:20,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:20,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:37:20,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622796847] [2021-10-21 19:37:20,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:37:20,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:37:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:37:20,070 INFO L87 Difference]: Start difference. First operand 318 states and 423 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 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 19:37:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:37:20,755 INFO L93 Difference]: Finished difference Result 1226 states and 1615 transitions. [2021-10-21 19:37:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-21 19:37:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 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 19:37:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:37:20,762 INFO L225 Difference]: With dead ends: 1226 [2021-10-21 19:37:20,762 INFO L226 Difference]: Without dead ends: 914 [2021-10-21 19:37:20,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 258.6ms TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:37:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-21 19:37:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 318. [2021-10-21 19:37:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.3091482649842272) internal successors, (415), 317 states have internal predecessors, (415), 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 19:37:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 415 transitions. [2021-10-21 19:37:20,802 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 415 transitions. Word has length 34 [2021-10-21 19:37:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:37:20,804 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 415 transitions. [2021-10-21 19:37:20,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 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 19:37:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 415 transitions. [2021-10-21 19:37:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 19:37:20,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:37:20,806 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 19:37:20,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:37:20,807 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 19:37:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:20,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1466712466, now seen corresponding path program 1 times [2021-10-21 19:37:20,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:20,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005314019] [2021-10-21 19:37:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:20,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:37:20,911 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:37:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:37:21,047 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:37:21,047 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:37:21,048 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:37:21,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:37:21,050 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:37:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:37:21,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:37:21,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:37:21 BoogieIcfgContainer [2021-10-21 19:37:21,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:37:21,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:37:21,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:37:21,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:37:21,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:17" (3/4) ... [2021-10-21 19:37:21,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:37:21,356 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:37:21,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:37:21,358 INFO L168 Benchmark]: Toolchain (without parser) took 5427.29 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 87.7 MB in the beginning and 68.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,358 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:37:21,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.58 ms. Allocated memory is still 121.6 MB. Free memory was 87.5 MB in the beginning and 87.0 MB in the end (delta: 522.5 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.46 ms. Allocated memory is still 121.6 MB. Free memory was 87.0 MB in the beginning and 83.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,359 INFO L168 Benchmark]: Boogie Preprocessor took 68.20 ms. Allocated memory is still 121.6 MB. Free memory was 83.6 MB in the beginning and 81.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,360 INFO L168 Benchmark]: RCFGBuilder took 1044.25 ms. Allocated memory is still 121.6 MB. Free memory was 81.5 MB in the beginning and 78.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,360 INFO L168 Benchmark]: TraceAbstraction took 3347.15 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 78.1 MB in the beginning and 87.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,361 INFO L168 Benchmark]: Witness Printer took 135.63 ms. Allocated memory is still 146.8 MB. Free memory was 87.8 MB in the beginning and 68.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:37:21,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 719.58 ms. Allocated memory is still 121.6 MB. Free memory was 87.5 MB in the beginning and 87.0 MB in the end (delta: 522.5 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.46 ms. Allocated memory is still 121.6 MB. Free memory was 87.0 MB in the beginning and 83.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.20 ms. Allocated memory is still 121.6 MB. Free memory was 83.6 MB in the beginning and 81.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1044.25 ms. Allocated memory is still 121.6 MB. Free memory was 81.5 MB in the beginning and 78.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3347.15 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 78.1 MB in the beginning and 87.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 135.63 ms. Allocated memory is still 146.8 MB. Free memory was 87.8 MB in the beginning and 68.9 MB in the end (delta: 18.9 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: 415]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L157] int pumpRunning = 0; [L158] int systemActive = 1; [L446] int cleanupTimeShifts = 4; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L522] int retValue_acc ; [L523] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L937] int retValue_acc ; [L940] retValue_acc = 1 [L941] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L345] int splverifierCounter ; [L346] int tmp ; [L347] int tmp___0 ; [L348] int tmp___1 ; [L349] int tmp___2 ; [L352] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L354] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L356] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L362] tmp = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L372] tmp___0 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L382] tmp___2 = __VERIFIER_nondet_int() [L384] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] COND TRUE \read(systemActive) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND TRUE ! pumpRunning [L309] int retValue_acc ; [L310] int tmp ; [L311] int tmp___0 ; [L137] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L315] tmp = isHighWaterSensorDry() [L317] COND FALSE !(\read(tmp)) [L320] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L322] retValue_acc = tmp___0 [L323] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] tmp = isHighWaterLevel() [L201] COND TRUE \read(tmp) [L228] int tmp ; [L253] int retValue_acc ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L257] retValue_acc = isMethaneLevelCritical() [L259] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L232] tmp = isMethaneAlarm() [L234] COND FALSE !(\read(tmp)) [L222] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L421] int tmp ; [L422] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L426] tmp = isMethaneLevelCritical() [L428] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L354] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L356] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L362] tmp = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L372] tmp___0 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L382] tmp___2 = __VERIFIER_nondet_int() [L384] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L172] COND TRUE \read(systemActive) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L421] int tmp ; [L422] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L426] tmp = isMethaneLevelCritical() [L428] COND TRUE \read(tmp) [L264] int retValue_acc ; [L267] retValue_acc = pumpRunning [L268] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L430] tmp___0 = isPumpRunning() [L432] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L415] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 415]: 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: 415]: 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, 89 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3106.8ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 29.7ms, AutomataDifference: 1293.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 907 SDtfs, 1185 SDslu, 2089 SDs, 0 SdLazy, 320 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 361.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 383.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 259.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1446 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 75.0ms SsaConstructionTime, 422.0ms SatisfiabilityAnalysisTime, 644.6ms InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 518 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 19:37:21,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aeacea9-58df-43be-a7fd-a1d2d7baf183/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...