./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa --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 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:50:24,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:50:24,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:50:24,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:50:24,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:50:24,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:50:24,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:50:24,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:50:24,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:50:24,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:50:24,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:50:24,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:50:24,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:50:24,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:50:24,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:50:24,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:50:24,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:50:24,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:50:24,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:50:24,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:50:24,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:50:24,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:50:24,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:50:24,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:50:24,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:50:24,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:50:24,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:50:24,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:50:24,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:50:24,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:50:24,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:50:24,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:50:24,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:50:24,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:50:24,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:50:24,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:50:24,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:50:24,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:50:24,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:50:24,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:50:24,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:50:24,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:50:24,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:50:24,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:50:24,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:50:24,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:50:24,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:50:24,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:50:24,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:50:24,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:50:24,849 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:50:24,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:50:24,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:50:24,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:50:24,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:50:24,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:50:24,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:50:24,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:50:24,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:50:24,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:50:24,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:50:24,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:50:24,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:50:24,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:50:24,853 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_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e [2021-12-06 20:50:25,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:50:25,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:50:25,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:50:25,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:50:25,102 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:50:25,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2021-12-06 20:50:25,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/data/40cb2ebcd/7ce0529496444ecd8bfbff4a18649b1e/FLAGe5e560d1e [2021-12-06 20:50:25,550 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:50:25,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2021-12-06 20:50:25,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/data/40cb2ebcd/7ce0529496444ecd8bfbff4a18649b1e/FLAGe5e560d1e [2021-12-06 20:50:25,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/data/40cb2ebcd/7ce0529496444ecd8bfbff4a18649b1e [2021-12-06 20:50:25,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:50:25,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:50:25,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:50:25,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:50:25,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:50:25,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:50:25" (1/1) ... [2021-12-06 20:50:25,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75169080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:25, skipping insertion in model container [2021-12-06 20:50:25,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:50:25" (1/1) ... [2021-12-06 20:50:25,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:50:25,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:50:26,079 WARN L230 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_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2021-12-06 20:50:26,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:50:26,181 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:50:26,195 WARN L230 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_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2021-12-06 20:50:26,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:50:26,282 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:50:26,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26 WrapperNode [2021-12-06 20:50:26,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:50:26,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:50:26,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:50:26,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:50:26,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,337 INFO L137 Inliner]: procedures = 56, calls = 155, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 252 [2021-12-06 20:50:26,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:50:26,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:50:26,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:50:26,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:50:26,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:50:26,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:50:26,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:50:26,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:50:26,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (1/1) ... [2021-12-06 20:50:26,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:50:26,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:50:26,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:50:26,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:50:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:50:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-06 20:50:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-06 20:50:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-06 20:50:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-06 20:50:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 20:50:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 20:50:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 20:50:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 20:50:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-06 20:50:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-06 20:50:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:50:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-06 20:50:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-06 20:50:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:50:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:50:26,522 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:50:26,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:50:26,771 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:50:26,778 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:50:26,779 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:50:26,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:50:26 BoogieIcfgContainer [2021-12-06 20:50:26,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:50:26,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:50:26,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:50:26,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:50:26,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:50:25" (1/3) ... [2021-12-06 20:50:26,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9e251b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:50:26, skipping insertion in model container [2021-12-06 20:50:26,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:50:26" (2/3) ... [2021-12-06 20:50:26,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9e251b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:50:26, skipping insertion in model container [2021-12-06 20:50:26,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:50:26" (3/3) ... [2021-12-06 20:50:26,789 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2021-12-06 20:50:26,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:50:26,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:50:26,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:50:26,840 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:50:26,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:50:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 74 states have internal predecessors, (94), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 20:50:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 20:50:26,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:26,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:26,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash -276262322, now seen corresponding path program 1 times [2021-12-06 20:50:26,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:26,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654406062] [2021-12-06 20:50:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:26,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:50:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:50:27,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654406062] [2021-12-06 20:50:27,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654406062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:27,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:27,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:50:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585173934] [2021-12-06 20:50:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:27,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:50:27,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:50:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:50:27,111 INFO L87 Difference]: Start difference. First operand has 86 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 74 states have internal predecessors, (94), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-12-06 20:50:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:27,148 INFO L93 Difference]: Finished difference Result 163 states and 222 transitions. [2021-12-06 20:50:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:50:27,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 25 [2021-12-06 20:50:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:27,161 INFO L225 Difference]: With dead ends: 163 [2021-12-06 20:50:27,161 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 20:50:27,165 INFO L932 BasicCegarLoop]: 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 [2021-12-06 20:50:27,169 INFO L933 BasicCegarLoop]: 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 [2021-12-06 20:50:27,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:27,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 20:50:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-06 20:50:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 66 states have internal predecessors, (80), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 20:50:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2021-12-06 20:50:27,218 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 25 [2021-12-06 20:50:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:27,219 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2021-12-06 20:50:27,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-12-06 20:50:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2021-12-06 20:50:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 20:50:27,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:27,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:27,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:50:27,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash 174267448, now seen corresponding path program 1 times [2021-12-06 20:50:27,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:27,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532095764] [2021-12-06 20:50:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:27,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:50:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:50:27,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:27,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532095764] [2021-12-06 20:50:27,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532095764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:27,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:27,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:50:27,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885074728] [2021-12-06 20:50:27,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:27,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:50:27,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:50:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:50:27,312 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 20:50:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:27,328 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-12-06 20:50:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:50:27,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 26 [2021-12-06 20:50:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:27,330 INFO L225 Difference]: With dead ends: 114 [2021-12-06 20:50:27,331 INFO L226 Difference]: Without dead ends: 68 [2021-12-06 20:50:27,332 INFO L932 BasicCegarLoop]: 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 [2021-12-06 20:50:27,334 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 150 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 [2021-12-06 20:50:27,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 150 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-06 20:50:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-12-06 20:50:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 60 states have internal predecessors, (73), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 20:50:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2021-12-06 20:50:27,344 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 26 [2021-12-06 20:50:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:27,344 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2021-12-06 20:50:27,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 20:50:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2021-12-06 20:50:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 20:50:27,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:27,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:27,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:50:27,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2461694, now seen corresponding path program 1 times [2021-12-06 20:50:27,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:27,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564168277] [2021-12-06 20:50:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:27,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 20:50:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:50:27,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:27,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564168277] [2021-12-06 20:50:27,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564168277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:27,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:27,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:50:27,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856977097] [2021-12-06 20:50:27,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:27,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:50:27,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:27,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:50:27,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:50:27,418 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-12-06 20:50:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:27,488 INFO L93 Difference]: Finished difference Result 168 states and 220 transitions. [2021-12-06 20:50:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:50:27,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 31 [2021-12-06 20:50:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:27,490 INFO L225 Difference]: With dead ends: 168 [2021-12-06 20:50:27,491 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 20:50:27,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:50:27,492 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 157 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:27,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 300 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 20:50:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2021-12-06 20:50:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.353658536585366) internal successors, (111), 89 states have internal predecessors, (111), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-12-06 20:50:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2021-12-06 20:50:27,509 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 31 [2021-12-06 20:50:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:27,509 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2021-12-06 20:50:27,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-12-06 20:50:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2021-12-06 20:50:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 20:50:27,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:27,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:27,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:50:27,511 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1429569393, now seen corresponding path program 1 times [2021-12-06 20:50:27,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:27,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512558349] [2021-12-06 20:50:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:27,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:50:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:50:27,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:27,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512558349] [2021-12-06 20:50:27,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512558349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:27,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:27,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:50:27,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596137123] [2021-12-06 20:50:27,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:27,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:50:27,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:27,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:50:27,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:50:27,606 INFO L87 Difference]: Start difference. First operand 103 states and 134 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 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) [2021-12-06 20:50:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:27,664 INFO L93 Difference]: Finished difference Result 243 states and 324 transitions. [2021-12-06 20:50:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:50:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 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 34 [2021-12-06 20:50:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:27,666 INFO L225 Difference]: With dead ends: 243 [2021-12-06 20:50:27,667 INFO L226 Difference]: Without dead ends: 148 [2021-12-06 20:50:27,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:50:27,669 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 57 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:27,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 326 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-06 20:50:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 139. [2021-12-06 20:50:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 118 states have internal predecessors, (141), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-06 20:50:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2021-12-06 20:50:27,689 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 34 [2021-12-06 20:50:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:27,689 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2021-12-06 20:50:27,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 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) [2021-12-06 20:50:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2021-12-06 20:50:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 20:50:27,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:27,692 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:27,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:50:27,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash -925495430, now seen corresponding path program 1 times [2021-12-06 20:50:27,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881513458] [2021-12-06 20:50:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:27,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:50:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:50:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:27,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:27,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881513458] [2021-12-06 20:50:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881513458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:27,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:50:27,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320977087] [2021-12-06 20:50:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:50:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:50:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:50:27,756 INFO L87 Difference]: Start difference. First operand 139 states and 175 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:27,806 INFO L93 Difference]: Finished difference Result 294 states and 382 transitions. [2021-12-06 20:50:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:50:27,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-06 20:50:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:27,809 INFO L225 Difference]: With dead ends: 294 [2021-12-06 20:50:27,809 INFO L226 Difference]: Without dead ends: 163 [2021-12-06 20:50:27,810 INFO L932 BasicCegarLoop]: 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 [2021-12-06 20:50:27,812 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 42 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:27,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 369 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-06 20:50:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 142. [2021-12-06 20:50:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 112 states have (on average 1.2857142857142858) internal successors, (144), 121 states have internal predecessors, (144), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-06 20:50:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2021-12-06 20:50:27,831 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 48 [2021-12-06 20:50:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:27,832 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2021-12-06 20:50:27,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2021-12-06 20:50:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 20:50:27,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:27,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:27,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:50:27,835 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -784946820, now seen corresponding path program 1 times [2021-12-06 20:50:27,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051850464] [2021-12-06 20:50:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:27,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:50:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:50:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:27,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:27,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051850464] [2021-12-06 20:50:27,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051850464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:27,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:27,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:50:27,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541903172] [2021-12-06 20:50:27,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:27,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:50:27,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:27,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:50:27,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:50:27,913 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:27,974 INFO L93 Difference]: Finished difference Result 303 states and 392 transitions. [2021-12-06 20:50:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:50:27,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-06 20:50:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:27,977 INFO L225 Difference]: With dead ends: 303 [2021-12-06 20:50:27,977 INFO L226 Difference]: Without dead ends: 169 [2021-12-06 20:50:27,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:50:27,979 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 77 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:27,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 439 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-06 20:50:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 144. [2021-12-06 20:50:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.280701754385965) internal successors, (146), 123 states have internal predecessors, (146), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-06 20:50:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 180 transitions. [2021-12-06 20:50:27,998 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 180 transitions. Word has length 48 [2021-12-06 20:50:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:27,999 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 180 transitions. [2021-12-06 20:50:27,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 180 transitions. [2021-12-06 20:50:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 20:50:28,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:28,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:28,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:50:28,002 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 962872849, now seen corresponding path program 1 times [2021-12-06 20:50:28,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:28,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553696849] [2021-12-06 20:50:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:28,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:50:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 20:50:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:28,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:28,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553696849] [2021-12-06 20:50:28,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553696849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:28,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:28,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:50:28,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028057422] [2021-12-06 20:50:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:28,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:50:28,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:50:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:50:28,051 INFO L87 Difference]: Start difference. First operand 144 states and 180 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:28,072 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2021-12-06 20:50:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:50:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2021-12-06 20:50:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:28,074 INFO L225 Difference]: With dead ends: 282 [2021-12-06 20:50:28,074 INFO L226 Difference]: Without dead ends: 146 [2021-12-06 20:50:28,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:50:28,077 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 37 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:28,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 196 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-06 20:50:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-12-06 20:50:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 123 states have internal predecessors, (145), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2021-12-06 20:50:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 177 transitions. [2021-12-06 20:50:28,091 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 177 transitions. Word has length 51 [2021-12-06 20:50:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 177 transitions. [2021-12-06 20:50:28,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 177 transitions. [2021-12-06 20:50:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 20:50:28,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:28,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:28,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:50:28,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1138281214, now seen corresponding path program 1 times [2021-12-06 20:50:28,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501935637] [2021-12-06 20:50:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:28,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:50:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:50:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:28,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:28,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501935637] [2021-12-06 20:50:28,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501935637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:28,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:28,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:50:28,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326497448] [2021-12-06 20:50:28,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:28,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:50:28,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:50:28,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:50:28,144 INFO L87 Difference]: Start difference. First operand 144 states and 177 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:28,169 INFO L93 Difference]: Finished difference Result 355 states and 442 transitions. [2021-12-06 20:50:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:50:28,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-06 20:50:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:28,172 INFO L225 Difference]: With dead ends: 355 [2021-12-06 20:50:28,172 INFO L226 Difference]: Without dead ends: 219 [2021-12-06 20:50:28,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:50:28,174 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 38 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:28,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 164 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-06 20:50:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-12-06 20:50:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 173 states have (on average 1.2485549132947977) internal successors, (216), 184 states have internal predecessors, (216), 24 states have call successors, (24), 23 states have call predecessors, (24), 21 states have return successors, (26), 22 states have call predecessors, (26), 24 states have call successors, (26) [2021-12-06 20:50:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 266 transitions. [2021-12-06 20:50:28,192 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 266 transitions. Word has length 48 [2021-12-06 20:50:28,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:28,193 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 266 transitions. [2021-12-06 20:50:28,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:50:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 266 transitions. [2021-12-06 20:50:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 20:50:28,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:28,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:28,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:50:28,195 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1635788712, now seen corresponding path program 1 times [2021-12-06 20:50:28,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:28,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61104153] [2021-12-06 20:50:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:28,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:50:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 20:50:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 20:50:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:28,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:28,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61104153] [2021-12-06 20:50:28,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61104153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:28,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:50:28,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:50:28,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545151754] [2021-12-06 20:50:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:28,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:50:28,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:50:28,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:50:28,318 INFO L87 Difference]: Start difference. First operand 219 states and 266 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:50:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:28,782 INFO L93 Difference]: Finished difference Result 782 states and 979 transitions. [2021-12-06 20:50:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:50:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (4), 2 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 52 [2021-12-06 20:50:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:28,786 INFO L225 Difference]: With dead ends: 782 [2021-12-06 20:50:28,786 INFO L226 Difference]: Without dead ends: 571 [2021-12-06 20:50:28,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 20:50:28,788 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 244 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:28,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 710 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:50:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-12-06 20:50:28,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 497. [2021-12-06 20:50:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 390 states have (on average 1.2128205128205127) internal successors, (473), 417 states have internal predecessors, (473), 56 states have call successors, (56), 46 states have call predecessors, (56), 50 states have return successors, (75), 52 states have call predecessors, (75), 56 states have call successors, (75) [2021-12-06 20:50:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 604 transitions. [2021-12-06 20:50:28,819 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 604 transitions. Word has length 52 [2021-12-06 20:50:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:28,820 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 604 transitions. [2021-12-06 20:50:28,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:50:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 604 transitions. [2021-12-06 20:50:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 20:50:28,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:28,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:28,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:50:28,822 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash 274757549, now seen corresponding path program 1 times [2021-12-06 20:50:28,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:28,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635668599] [2021-12-06 20:50:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:28,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:50:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:50:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:50:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 20:50:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:50:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:50:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 20:50:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 20:50:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 20:50:28,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:28,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635668599] [2021-12-06 20:50:28,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635668599] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:50:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592453156] [2021-12-06 20:50:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:28,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:50:28,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:50:28,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:50:28,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:50:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:50:29,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:50:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 20:50:29,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:50:29,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592453156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:29,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:50:29,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2021-12-06 20:50:29,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442124824] [2021-12-06 20:50:29,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:29,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:50:29,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:50:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:50:29,375 INFO L87 Difference]: Start difference. First operand 497 states and 604 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 20:50:29,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:29,511 INFO L93 Difference]: Finished difference Result 1006 states and 1225 transitions. [2021-12-06 20:50:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:50:29,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 89 [2021-12-06 20:50:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:29,516 INFO L225 Difference]: With dead ends: 1006 [2021-12-06 20:50:29,517 INFO L226 Difference]: Without dead ends: 517 [2021-12-06 20:50:29,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:50:29,520 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 79 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:29,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 548 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:50:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-12-06 20:50:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 489. [2021-12-06 20:50:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.1979166666666667) internal successors, (460), 411 states have internal predecessors, (460), 55 states have call successors, (55), 46 states have call predecessors, (55), 49 states have return successors, (65), 51 states have call predecessors, (65), 55 states have call successors, (65) [2021-12-06 20:50:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 580 transitions. [2021-12-06 20:50:29,566 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 580 transitions. Word has length 89 [2021-12-06 20:50:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:29,567 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 580 transitions. [2021-12-06 20:50:29,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 20:50:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 580 transitions. [2021-12-06 20:50:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 20:50:29,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:29,570 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:29,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:50:29,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:50:29,773 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1365206167, now seen corresponding path program 1 times [2021-12-06 20:50:29,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828282777] [2021-12-06 20:50:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:29,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:50:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 20:50:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 20:50:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:50:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 20:50:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:50:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 20:50:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 20:50:29,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828282777] [2021-12-06 20:50:29,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828282777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:50:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982702848] [2021-12-06 20:50:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:29,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:50:29,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:50:29,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:50:29,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:50:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:29,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:50:29,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:50:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:30,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:50:30,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982702848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:30,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:50:30,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2021-12-06 20:50:30,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701382444] [2021-12-06 20:50:30,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:30,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:50:30,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:50:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:50:30,090 INFO L87 Difference]: Start difference. First operand 489 states and 580 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:50:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:30,124 INFO L93 Difference]: Finished difference Result 702 states and 846 transitions. [2021-12-06 20:50:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:50:30,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2021-12-06 20:50:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:30,127 INFO L225 Difference]: With dead ends: 702 [2021-12-06 20:50:30,128 INFO L226 Difference]: Without dead ends: 700 [2021-12-06 20:50:30,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:50:30,129 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 45 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:30,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 168 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:50:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-12-06 20:50:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 529. [2021-12-06 20:50:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 416 states have (on average 1.2091346153846154) internal successors, (503), 444 states have internal predecessors, (503), 59 states have call successors, (59), 50 states have call predecessors, (59), 53 states have return successors, (73), 55 states have call predecessors, (73), 59 states have call successors, (73) [2021-12-06 20:50:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 635 transitions. [2021-12-06 20:50:30,159 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 635 transitions. Word has length 85 [2021-12-06 20:50:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:30,160 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 635 transitions. [2021-12-06 20:50:30,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:50:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 635 transitions. [2021-12-06 20:50:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 20:50:30,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:30,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:30,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:50:30,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 20:50:30,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:30,390 INFO L85 PathProgramCache]: Analyzing trace with hash -556908766, now seen corresponding path program 1 times [2021-12-06 20:50:30,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:30,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399586437] [2021-12-06 20:50:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:30,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:50:30,414 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:50:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:50:30,471 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:50:30,471 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 20:50:30,472 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 20:50:30,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:50:30,477 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:30,480 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 20:50:30,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 08:50:30 BoogieIcfgContainer [2021-12-06 20:50:30,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 20:50:30,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:50:30,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:50:30,564 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:50:30,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:50:26" (3/4) ... [2021-12-06 20:50:30,566 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 20:50:30,658 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 20:50:30,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:50:30,659 INFO L158 Benchmark]: Toolchain (without parser) took 4764.73ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 106.2MB in the beginning and 132.3MB in the end (delta: -26.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-06 20:50:30,660 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:50:30,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.85ms. Allocated memory is still 146.8MB. Free memory was 106.0MB in the beginning and 115.1MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 20:50:30,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.54ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 112.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:50:30,661 INFO L158 Benchmark]: Boogie Preprocessor took 30.72ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:50:30,661 INFO L158 Benchmark]: RCFGBuilder took 410.94ms. Allocated memory is still 146.8MB. Free memory was 110.8MB in the beginning and 94.9MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 20:50:30,662 INFO L158 Benchmark]: TraceAbstraction took 3781.03ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 94.1MB in the beginning and 144.0MB in the end (delta: -49.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:50:30,662 INFO L158 Benchmark]: Witness Printer took 95.36ms. Allocated memory is still 188.7MB. Free memory was 144.0MB in the beginning and 132.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 20:50:30,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.85ms. Allocated memory is still 146.8MB. Free memory was 106.0MB in the beginning and 115.1MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.54ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 112.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.72ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 410.94ms. Allocated memory is still 146.8MB. Free memory was 110.8MB in the beginning and 94.9MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3781.03ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 94.1MB in the beginning and 144.0MB in the end (delta: -49.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 95.36ms. Allocated memory is still 188.7MB. Free memory was 144.0MB in the beginning and 132.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. 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: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L142] int pumpRunning = 0; [L143] int systemActive = 1; [L374] int cleanupTimeShifts = 4; [L472] int methAndRunningLastTime ; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L775] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L449] int retValue_acc ; [L450] int tmp ; [L454] FCALL select_helpers() [L455] FCALL select_features() [L456] CALL, EXPR valid_product() [L365] int retValue_acc ; [L368] retValue_acc = 1 [L369] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L456] RET, EXPR valid_product() [L456] tmp = valid_product() [L458] COND TRUE \read(tmp) [L460] FCALL setup() [L461] CALL runTest() [L442] CALL __utac_acc__Specification2_spec__1() [L477] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L442] RET __utac_acc__Specification2_spec__1() [L443] CALL test() [L66] int splverifierCounter ; [L67] int tmp ; [L68] int tmp___0 ; [L69] int tmp___1 ; [L70] int tmp___2 ; [L73] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L83] tmp = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L87] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L150] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L182] COND TRUE ! pumpRunning [L184] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L592] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND FALSE !(waterLevel < 2) [L599] retValue_acc = 0 [L600] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L184] RET, EXPR isHighWaterLevel() [L184] tmp = isHighWaterLevel() [L186] COND TRUE \read(tmp) [L188] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L242] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L207] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L223] RET activatePump__wrappee__highWaterSensor() [L188] RET activatePump() [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp = isMethaneLevelCritical() [L489] COND FALSE !(\read(tmp)) [L505] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L77] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L97] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L542] COND FALSE !(\read(methaneLevelCritical)) [L545] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L97] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L494] COND FALSE !(\read(methAndRunningLastTime)) [L499] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L494] COND TRUE \read(methAndRunningLastTime) [L496] CALL __automaton_fail() [L54] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 813 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 794 mSDsluCounter, 3478 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2331 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 530 IncrementalHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 1147 mSDtfsCounter, 530 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=529occurred in iteration=11, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 335 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 828 NumberOfCodeBlocks, 828 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 698 ConstructedInterpolants, 0 QuantifiedInterpolants, 1140 SizeOfPredicates, 5 NumberOfNonLiveVariables, 904 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 124/131 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 20:50:30,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd2be8db-f972-4b36-8faa-a7ae38ed3d9f/bin/uautomizer-DrprNOufMa/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