./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8 --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 b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:16:15,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:16:15,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:16:15,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:16:15,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:16:15,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:16:15,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:16:15,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:16:15,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:16:15,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:16:15,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:16:15,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:16:15,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:16:15,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:16:15,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:16:15,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:16:15,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:16:15,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:16:15,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:16:15,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:16:15,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:16:15,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:16:15,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:16:15,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:16:15,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:16:15,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:16:15,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:16:15,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:16:15,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:16:15,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:16:15,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:16:15,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:16:15,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:16:15,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:16:15,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:16:15,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:16:15,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:16:15,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:16:15,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:16:15,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:16:15,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:16:15,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:16:15,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:16:15,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:16:15,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:16:15,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:16:15,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:16:15,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:16:15,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:16:15,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:16:15,991 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:16:15,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:16:15,992 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:16:15,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:16:15,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:16:15,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:16:15,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:16:15,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:16:15,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:16:15,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:16:15,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:16:15,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:16:15,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:16:15,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:16:15,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:16:15,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:16:15,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:15,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:16:15,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:16:15,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:16:15,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:16:15,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:16:15,997 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:16:15,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:16:15,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:16:15,998 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_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b [2022-11-16 12:16:16,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:16:16,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:16:16,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:16:16,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:16:16,381 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:16:16,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2022-11-16 12:16:16,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/data/2dcc19a7e/140041b135d74dc6afdaa4f1f6537085/FLAG2683811af [2022-11-16 12:16:17,014 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:16:17,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2022-11-16 12:16:17,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/data/2dcc19a7e/140041b135d74dc6afdaa4f1f6537085/FLAG2683811af [2022-11-16 12:16:17,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/data/2dcc19a7e/140041b135d74dc6afdaa4f1f6537085 [2022-11-16 12:16:17,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:16:17,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:16:17,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:17,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:16:17,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:16:17,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:17,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e237a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17, skipping insertion in model container [2022-11-16 12:16:17,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:17,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:16:17,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:16:17,784 WARN L229 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_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2022-11-16 12:16:17,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:17,822 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:16:17,949 WARN L229 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_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2022-11-16 12:16:17,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:17,987 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:16:17,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17 WrapperNode [2022-11-16 12:16:17,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:17,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:17,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:16:17,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:16:17,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,061 INFO L138 Inliner]: procedures = 54, calls = 154, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 242 [2022-11-16 12:16:18,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:18,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:16:18,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:16:18,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:16:18,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:16:18,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:16:18,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:16:18,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:16:18,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:18,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:16:18,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:16:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:16:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-16 12:16:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-16 12:16:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-16 12:16:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-16 12:16:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 12:16:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 12:16:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 12:16:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 12:16:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-16 12:16:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-16 12:16:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-16 12:16:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-16 12:16:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:16:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-16 12:16:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-16 12:16:18,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:16:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:16:18,287 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:16:18,290 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:16:18,706 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:16:18,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:16:18,730 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:16:18,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:18 BoogieIcfgContainer [2022-11-16 12:16:18,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:16:18,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:16:18,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:16:18,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:16:18,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:16:17" (1/3) ... [2022-11-16 12:16:18,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544202cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:18, skipping insertion in model container [2022-11-16 12:16:18,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17" (2/3) ... [2022-11-16 12:16:18,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544202cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:18, skipping insertion in model container [2022-11-16 12:16:18,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:18" (3/3) ... [2022-11-16 12:16:18,744 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2022-11-16 12:16:18,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:16:18,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:16:18,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:18,918 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f8b73e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:18,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:16:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 73 states have internal predecessors, (90), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 12:16:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:16:18,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:18,939 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:16:18,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1437858382, now seen corresponding path program 1 times [2022-11-16 12:16:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145255842] [2022-11-16 12:16:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:18,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:16:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:19,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145255842] [2022-11-16 12:16:19,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145255842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:19,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:19,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:16:19,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954061799] [2022-11-16 12:16:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:19,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:16:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:16:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:16:19,343 INFO L87 Difference]: Start difference. First operand has 86 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 73 states have internal predecessors, (90), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:19,409 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2022-11-16 12:16:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:16:19,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-16 12:16:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:19,437 INFO L225 Difference]: With dead ends: 164 [2022-11-16 12:16:19,437 INFO L226 Difference]: Without dead ends: 77 [2022-11-16 12:16:19,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:16:19,449 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:19,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:16:19,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-16 12:16:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-16 12:16:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 65 states have internal predecessors, (76), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:16:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2022-11-16 12:16:19,529 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 23 [2022-11-16 12:16:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:19,531 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2022-11-16 12:16:19,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2022-11-16 12:16:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:16:19,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:19,539 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:16:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:16:19,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:19,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1625050219, now seen corresponding path program 1 times [2022-11-16 12:16:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:19,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142092105] [2022-11-16 12:16:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:19,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:16:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:19,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142092105] [2022-11-16 12:16:19,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142092105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:19,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:19,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:19,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063896830] [2022-11-16 12:16:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:19,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:16:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:16:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:19,751 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:19,770 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2022-11-16 12:16:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:16:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-16 12:16:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:19,773 INFO L225 Difference]: With dead ends: 119 [2022-11-16 12:16:19,773 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 12:16:19,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:19,775 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 13 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:19,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:16:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 12:16:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-16 12:16:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 59 states have internal predecessors, (69), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:16:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2022-11-16 12:16:19,786 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 24 [2022-11-16 12:16:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2022-11-16 12:16:19,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2022-11-16 12:16:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:16:19,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:19,789 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:16:19,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:16:19,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash 875018451, now seen corresponding path program 1 times [2022-11-16 12:16:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171197521] [2022-11-16 12:16:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:16:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:19,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:19,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171197521] [2022-11-16 12:16:19,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171197521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:19,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:19,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:19,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885766613] [2022-11-16 12:16:19,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:19,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:19,995 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:20,118 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2022-11-16 12:16:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-16 12:16:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:20,120 INFO L225 Difference]: With dead ends: 129 [2022-11-16 12:16:20,120 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 12:16:20,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:20,123 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 112 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:20,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 208 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:16:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 12:16:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-16 12:16:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 59 states have internal predecessors, (68), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:16:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2022-11-16 12:16:20,138 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 29 [2022-11-16 12:16:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:20,138 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2022-11-16 12:16:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2022-11-16 12:16:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:16:20,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:20,141 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1] [2022-11-16 12:16:20,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:16:20,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:20,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2067559019, now seen corresponding path program 1 times [2022-11-16 12:16:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159691556] [2022-11-16 12:16:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:16:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:16:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:16:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:20,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159691556] [2022-11-16 12:16:20,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159691556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:20,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:20,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88847763] [2022-11-16 12:16:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:20,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:20,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:20,400 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:16:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:20,658 INFO L93 Difference]: Finished difference Result 201 states and 254 transitions. [2022-11-16 12:16:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-11-16 12:16:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:20,661 INFO L225 Difference]: With dead ends: 201 [2022-11-16 12:16:20,661 INFO L226 Difference]: Without dead ends: 140 [2022-11-16 12:16:20,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:20,665 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 149 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:20,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 262 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:16:20,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-16 12:16:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-11-16 12:16:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 109 states have internal predecessors, (128), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:16:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2022-11-16 12:16:20,710 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 39 [2022-11-16 12:16:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:20,711 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2022-11-16 12:16:20,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:16:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2022-11-16 12:16:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:16:20,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:20,721 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:20,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:16:20,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:20,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1412403797, now seen corresponding path program 1 times [2022-11-16 12:16:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:20,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242091082] [2022-11-16 12:16:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:16:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:16:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:20,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:20,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242091082] [2022-11-16 12:16:20,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242091082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:20,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:20,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:20,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586698392] [2022-11-16 12:16:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:20,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:20,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:20,916 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:21,109 INFO L93 Difference]: Finished difference Result 269 states and 331 transitions. [2022-11-16 12:16:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-16 12:16:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:21,112 INFO L225 Difference]: With dead ends: 269 [2022-11-16 12:16:21,113 INFO L226 Difference]: Without dead ends: 142 [2022-11-16 12:16:21,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:21,115 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:21,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 333 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:16:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-16 12:16:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2022-11-16 12:16:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 112 states have internal predecessors, (131), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:16:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 166 transitions. [2022-11-16 12:16:21,137 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 166 transitions. Word has length 43 [2022-11-16 12:16:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:21,137 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 166 transitions. [2022-11-16 12:16:21,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 166 transitions. [2022-11-16 12:16:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:16:21,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:21,139 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:21,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:16:21,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash -581740909, now seen corresponding path program 1 times [2022-11-16 12:16:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:21,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714902554] [2022-11-16 12:16:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:16:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:16:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:21,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:21,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714902554] [2022-11-16 12:16:21,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714902554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:21,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:21,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:21,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822960730] [2022-11-16 12:16:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:21,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:21,286 INFO L87 Difference]: Start difference. First operand 137 states and 166 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:21,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:21,481 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2022-11-16 12:16:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:16:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-16 12:16:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:21,484 INFO L225 Difference]: With dead ends: 280 [2022-11-16 12:16:21,484 INFO L226 Difference]: Without dead ends: 150 [2022-11-16 12:16:21,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:21,486 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 363 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:16:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-16 12:16:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 139. [2022-11-16 12:16:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 114 states have internal predecessors, (133), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-16 12:16:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2022-11-16 12:16:21,507 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 43 [2022-11-16 12:16:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:21,508 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2022-11-16 12:16:21,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2022-11-16 12:16:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:16:21,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:21,510 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:16:21,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1399389359, now seen corresponding path program 1 times [2022-11-16 12:16:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842345614] [2022-11-16 12:16:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:16:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:16:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:21,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:21,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842345614] [2022-11-16 12:16:21,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842345614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:21,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:21,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691553593] [2022-11-16 12:16:21,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:21,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:21,634 INFO L87 Difference]: Start difference. First operand 139 states and 168 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:21,930 INFO L93 Difference]: Finished difference Result 394 states and 498 transitions. [2022-11-16 12:16:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-16 12:16:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:21,938 INFO L225 Difference]: With dead ends: 394 [2022-11-16 12:16:21,938 INFO L226 Difference]: Without dead ends: 262 [2022-11-16 12:16:21,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:21,943 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 188 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:21,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 278 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:16:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-16 12:16:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2022-11-16 12:16:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.2371134020618557) internal successors, (240), 205 states have internal predecessors, (240), 30 states have call successors, (30), 28 states have call predecessors, (30), 29 states have return successors, (45), 30 states have call predecessors, (45), 30 states have call successors, (45) [2022-11-16 12:16:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 315 transitions. [2022-11-16 12:16:21,986 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 315 transitions. Word has length 43 [2022-11-16 12:16:21,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:21,986 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 315 transitions. [2022-11-16 12:16:21,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 315 transitions. [2022-11-16 12:16:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:16:21,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:21,988 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:21,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:16:21,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1312233661, now seen corresponding path program 1 times [2022-11-16 12:16:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:21,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299952233] [2022-11-16 12:16:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:16:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:16:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:16:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:22,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299952233] [2022-11-16 12:16:22,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299952233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:22,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:22,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:22,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017127310] [2022-11-16 12:16:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:22,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:22,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:22,135 INFO L87 Difference]: Start difference. First operand 254 states and 315 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:16:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:22,522 INFO L93 Difference]: Finished difference Result 754 states and 965 transitions. [2022-11-16 12:16:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:16:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-16 12:16:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:22,530 INFO L225 Difference]: With dead ends: 754 [2022-11-16 12:16:22,530 INFO L226 Difference]: Without dead ends: 507 [2022-11-16 12:16:22,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:16:22,534 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 139 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:22,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 323 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:16:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-16 12:16:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 487. [2022-11-16 12:16:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 368 states have (on average 1.203804347826087) internal successors, (443), 389 states have internal predecessors, (443), 60 states have call successors, (60), 56 states have call predecessors, (60), 58 states have return successors, (95), 60 states have call predecessors, (95), 60 states have call successors, (95) [2022-11-16 12:16:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 598 transitions. [2022-11-16 12:16:22,599 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 598 transitions. Word has length 45 [2022-11-16 12:16:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:22,602 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 598 transitions. [2022-11-16 12:16:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:16:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 598 transitions. [2022-11-16 12:16:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:16:22,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:22,606 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:16:22,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1510619617, now seen corresponding path program 1 times [2022-11-16 12:16:22,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615331761] [2022-11-16 12:16:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:16:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 12:16:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:16:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 12:16:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:22,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:22,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615331761] [2022-11-16 12:16:22,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615331761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:22,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:22,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:22,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588726856] [2022-11-16 12:16:22,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:22,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:22,798 INFO L87 Difference]: Start difference. First operand 487 states and 598 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:16:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:23,258 INFO L93 Difference]: Finished difference Result 509 states and 627 transitions. [2022-11-16 12:16:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:16:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-11-16 12:16:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:23,261 INFO L225 Difference]: With dead ends: 509 [2022-11-16 12:16:23,262 INFO L226 Difference]: Without dead ends: 507 [2022-11-16 12:16:23,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:16:23,263 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 172 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:23,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 137 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:16:23,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-16 12:16:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 487. [2022-11-16 12:16:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 368 states have (on average 1.1929347826086956) internal successors, (439), 389 states have internal predecessors, (439), 60 states have call successors, (60), 56 states have call predecessors, (60), 58 states have return successors, (95), 60 states have call predecessors, (95), 60 states have call successors, (95) [2022-11-16 12:16:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 594 transitions. [2022-11-16 12:16:23,318 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 594 transitions. Word has length 49 [2022-11-16 12:16:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 594 transitions. [2022-11-16 12:16:23,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:16:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 594 transitions. [2022-11-16 12:16:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:16:23,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:23,320 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:16:23,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1922431815, now seen corresponding path program 1 times [2022-11-16 12:16:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:23,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257240787] [2022-11-16 12:16:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:23,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:23,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:16:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:16:23,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:16:23,403 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:16:23,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:16:23,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:16:23,410 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:23,414 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:16:23,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:16:23 BoogieIcfgContainer [2022-11-16 12:16:23,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:16:23,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:16:23,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:16:23,483 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:16:23,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:18" (3/4) ... [2022-11-16 12:16:23,488 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:16:23,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:16:23,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:16:23,583 INFO L158 Benchmark]: Toolchain (without parser) took 6268.92ms. Allocated memory was 98.6MB in the beginning and 153.1MB in the end (delta: 54.5MB). Free memory was 62.1MB in the beginning and 116.3MB in the end (delta: -54.2MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,584 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:16:23,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.48ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 66.8MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.00ms. Allocated memory is still 98.6MB. Free memory was 66.8MB in the beginning and 64.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,585 INFO L158 Benchmark]: Boogie Preprocessor took 30.91ms. Allocated memory is still 98.6MB. Free memory was 64.4MB in the beginning and 62.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,585 INFO L158 Benchmark]: RCFGBuilder took 639.31ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 44.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,586 INFO L158 Benchmark]: TraceAbstraction took 4746.37ms. Allocated memory was 98.6MB in the beginning and 153.1MB in the end (delta: 54.5MB). Free memory was 43.7MB in the beginning and 120.5MB in the end (delta: -76.8MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,589 INFO L158 Benchmark]: Witness Printer took 100.11ms. Allocated memory is still 153.1MB. Free memory was 120.5MB in the beginning and 116.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:16:23,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.48ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 66.8MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.00ms. Allocated memory is still 98.6MB. Free memory was 66.8MB in the beginning and 64.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.91ms. Allocated memory is still 98.6MB. Free memory was 64.4MB in the beginning and 62.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 639.31ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 44.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4746.37ms. Allocated memory was 98.6MB in the beginning and 153.1MB in the end (delta: 54.5MB). Free memory was 43.7MB in the beginning and 120.5MB in the end (delta: -76.8MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Witness Printer took 100.11ms. Allocated memory is still 153.1MB. Free memory was 120.5MB in the beginning and 116.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 847]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L854] int methaneLevelCritical = 0; [L590] int pumpRunning = 0; [L853] int waterLevel = 1; [L591] int systemActive = 1; [L50] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L777] int splverifierCounter ; [L778] int tmp ; [L779] int tmp___0 ; [L780] int tmp___1 ; [L781] int tmp___2 ; [L784] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L786] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L788] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L794] tmp = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L798] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L804] tmp___0 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L808] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L883] COND FALSE !(\read(methaneLevelCritical)) [L886] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L814] tmp___2 = __VERIFIER_nondet_int() [L816] COND TRUE \read(tmp___2) [L818] CALL startSystem() [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L818] RET startSystem() [L831] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE \read(systemActive) [L606] CALL processEnvironment() [L652] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L626] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND TRUE ! pumpRunning [L631] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L631] RET, EXPR isHighWaterLevel() [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L635] CALL activatePump() [L680] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L635] RET activatePump() [L670] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L606] RET processEnvironment() [L612] CALL __utac_acc__Specification1_spec__1() [L193] int tmp ; [L194] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L198] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L198] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L198] tmp = isMethaneLevelCritical() [L200] COND TRUE \read(tmp) [L202] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L202] RET, EXPR isPumpRunning() [L202] tmp___0 = isPumpRunning() [L204] COND TRUE \read(tmp___0) [L206] CALL __automaton_fail() [L847] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 958 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 929 mSDsluCounter, 2167 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1410 mSDsCounter, 239 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1097 IncrementalHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 239 mSolverCounterUnsat, 757 mSDtfsCounter, 1097 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 614 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-11-16 12:16:23,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4571fda-ced2-4ae8-b1c2-3d23dc2556bf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE