./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro --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 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:25:06,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:25:06,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:25:06,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:25:06,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:25:06,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:25:06,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:25:06,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:25:06,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:25:06,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:25:06,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:25:06,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:25:06,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:25:06,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:25:06,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:25:06,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:25:06,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:25:06,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:25:06,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:25:06,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:25:06,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:25:06,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:25:06,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:25:06,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:25:06,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:25:06,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:25:06,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:25:06,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:25:06,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:25:06,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:25:06,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:25:06,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:25:06,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:25:06,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:25:06,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:25:06,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:25:06,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:25:06,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:25:06,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:25:06,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:25:06,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:25:06,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:25:06,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:25:06,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:25:06,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:25:06,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:25:06,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:25:06,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:25:06,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:25:06,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:25:06,717 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:25:06,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:25:06,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:25:06,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:25:06,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:25:06,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:25:06,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:25:06,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:25:06,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:25:06,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:25:06,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:25:06,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:25:06,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:25:06,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:25:06,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:25:06,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:25:06,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:06,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:25:06,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:25:06,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:25:06,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:25:06,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:25:06,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:25:06,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:25:06,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:25:06,727 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_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 [2022-11-18 18:25:07,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:25:07,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:25:07,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:25:07,072 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:25:07,073 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:25:07,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2022-11-18 18:25:07,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/data/7c0f70762/75324d26e7ce4f2aa08ba54decaaa8d3/FLAG02733aa51 [2022-11-18 18:25:07,765 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:25:07,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2022-11-18 18:25:07,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/data/7c0f70762/75324d26e7ce4f2aa08ba54decaaa8d3/FLAG02733aa51 [2022-11-18 18:25:08,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/data/7c0f70762/75324d26e7ce4f2aa08ba54decaaa8d3 [2022-11-18 18:25:08,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:25:08,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:25:08,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:08,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:25:08,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:25:08,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f7cc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08, skipping insertion in model container [2022-11-18 18:25:08,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:25:08,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:25:08,671 WARN L234 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_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2022-11-18 18:25:08,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:08,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:25:08,763 WARN L234 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_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2022-11-18 18:25:08,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:08,784 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:25:08,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08 WrapperNode [2022-11-18 18:25:08,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:08,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:08,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:25:08,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:25:08,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,876 INFO L138 Inliner]: procedures = 52, calls = 93, calls flagged for inlining = 21, calls inlined = 17, statements flattened = 167 [2022-11-18 18:25:08,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:08,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:25:08,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:25:08,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:25:08,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:25:08,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:25:08,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:25:08,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:25:08,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:08,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:08,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:25:09,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:25:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:25:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-18 18:25:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-18 18:25:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 18:25:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 18:25:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 18:25:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 18:25:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-18 18:25:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-18 18:25:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:25:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-18 18:25:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-18 18:25:09,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:25:09,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:25:09,189 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:25:09,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:25:09,573 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:25:09,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:25:09,586 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:25:09,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:09 BoogieIcfgContainer [2022-11-18 18:25:09,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:25:09,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:25:09,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:25:09,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:25:09,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:25:08" (1/3) ... [2022-11-18 18:25:09,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1ba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:09, skipping insertion in model container [2022-11-18 18:25:09,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (2/3) ... [2022-11-18 18:25:09,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1ba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:09, skipping insertion in model container [2022-11-18 18:25:09,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:09" (3/3) ... [2022-11-18 18:25:09,602 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2022-11-18 18:25:09,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:25:09,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:25:09,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:25:09,713 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f7e8ec0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:25:09,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:25:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 61 states have internal predecessors, (78), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 18:25:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:25:09,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:09,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:09,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1771114850, now seen corresponding path program 1 times [2022-11-18 18:25:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:09,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900800414] [2022-11-18 18:25:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:10,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:10,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900800414] [2022-11-18 18:25:10,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900800414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:10,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:10,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:25:10,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666257997] [2022-11-18 18:25:10,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:25:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:25:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:25:10,104 INFO L87 Difference]: Start difference. First operand has 70 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 61 states have internal predecessors, (78), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:10,141 INFO L93 Difference]: Finished difference Result 132 states and 183 transitions. [2022-11-18 18:25:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:25:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 18:25:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:10,161 INFO L225 Difference]: With dead ends: 132 [2022-11-18 18:25:10,162 INFO L226 Difference]: Without dead ends: 61 [2022-11-18 18:25:10,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:25:10,176 INFO L413 NwaCegarLoop]: 88 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, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:10,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-18 18:25:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-18 18:25:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 53 states have internal predecessors, (64), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 18:25:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2022-11-18 18:25:10,228 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 19 [2022-11-18 18:25:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:10,228 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2022-11-18 18:25:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2022-11-18 18:25:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 18:25:10,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:10,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:10,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:25:10,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:10,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash -197401423, now seen corresponding path program 1 times [2022-11-18 18:25:10,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:10,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568849167] [2022-11-18 18:25:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:10,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568849167] [2022-11-18 18:25:10,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568849167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:10,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:10,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:25:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729838920] [2022-11-18 18:25:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:25:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:10,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:25:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:10,487 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:10,525 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2022-11-18 18:25:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:25:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 18:25:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:10,535 INFO L225 Difference]: With dead ends: 88 [2022-11-18 18:25:10,536 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 18:25:10,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:10,541 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:10,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 18:25:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 18:25:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 47 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:25:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2022-11-18 18:25:10,560 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 20 [2022-11-18 18:25:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:10,560 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2022-11-18 18:25:10,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:10,561 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2022-11-18 18:25:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:25:10,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:10,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:10,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:25:10,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1468907181, now seen corresponding path program 1 times [2022-11-18 18:25:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:10,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247137732] [2022-11-18 18:25:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:10,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:10,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:10,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247137732] [2022-11-18 18:25:10,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247137732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:10,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:10,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:25:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112524162] [2022-11-18 18:25:10,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:10,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:25:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:25:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:10,687 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:10,706 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2022-11-18 18:25:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:25:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 18:25:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:10,708 INFO L225 Difference]: With dead ends: 97 [2022-11-18 18:25:10,709 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 18:25:10,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:10,711 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:10,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 18:25:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 18:25:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 47 states have internal predecessors, (56), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:25:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-18 18:25:10,726 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 24 [2022-11-18 18:25:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:10,727 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-18 18:25:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-18 18:25:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:25:10,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:10,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:10,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:25:10,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1368427132, now seen corresponding path program 1 times [2022-11-18 18:25:10,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:10,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635834438] [2022-11-18 18:25:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:10,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:25:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635834438] [2022-11-18 18:25:10,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635834438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:10,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:10,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:25:10,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775264096] [2022-11-18 18:25:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:10,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:25:10,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:10,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:25:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:10,860 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:25:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:10,908 INFO L93 Difference]: Finished difference Result 131 states and 171 transitions. [2022-11-18 18:25:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:25:10,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-18 18:25:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:10,911 INFO L225 Difference]: With dead ends: 131 [2022-11-18 18:25:10,912 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 18:25:10,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:10,914 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 40 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:10,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 123 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 18:25:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2022-11-18 18:25:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.328358208955224) internal successors, (89), 73 states have internal predecessors, (89), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-18 18:25:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-11-18 18:25:10,940 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 29 [2022-11-18 18:25:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-11-18 18:25:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:25:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-11-18 18:25:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:25:10,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:10,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:10,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:25:10,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:10,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1970576469, now seen corresponding path program 1 times [2022-11-18 18:25:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:10,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124649916] [2022-11-18 18:25:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:10,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:11,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:11,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124649916] [2022-11-18 18:25:11,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124649916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:11,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:11,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:25:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871926715] [2022-11-18 18:25:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:11,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:25:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:25:11,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:11,098 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:11,155 INFO L93 Difference]: Finished difference Result 228 states and 306 transitions. [2022-11-18 18:25:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:25:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 18:25:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:11,158 INFO L225 Difference]: With dead ends: 228 [2022-11-18 18:25:11,158 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 18:25:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:25:11,162 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:11,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 120 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 18:25:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2022-11-18 18:25:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.325) internal successors, (159), 128 states have internal predecessors, (159), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-18 18:25:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2022-11-18 18:25:11,214 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 33 [2022-11-18 18:25:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:11,214 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2022-11-18 18:25:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2022-11-18 18:25:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:25:11,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:11,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:11,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:25:11,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -959459219, now seen corresponding path program 1 times [2022-11-18 18:25:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:11,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976543770] [2022-11-18 18:25:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:11,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976543770] [2022-11-18 18:25:11,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976543770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:11,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:11,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:25:11,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524766461] [2022-11-18 18:25:11,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:25:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:11,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:25:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:11,323 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:11,415 INFO L93 Difference]: Finished difference Result 321 states and 427 transitions. [2022-11-18 18:25:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:25:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 18:25:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:11,423 INFO L225 Difference]: With dead ends: 321 [2022-11-18 18:25:11,423 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 18:25:11,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:25:11,426 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 50 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:11,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 18:25:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 155. [2022-11-18 18:25:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 134 states have internal predecessors, (165), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-18 18:25:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 201 transitions. [2022-11-18 18:25:11,471 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 201 transitions. Word has length 33 [2022-11-18 18:25:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:11,471 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 201 transitions. [2022-11-18 18:25:11,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 201 transitions. [2022-11-18 18:25:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:25:11,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:11,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:11,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:25:11,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -701293781, now seen corresponding path program 1 times [2022-11-18 18:25:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:11,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132113771] [2022-11-18 18:25:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:11,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132113771] [2022-11-18 18:25:11,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132113771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:11,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:11,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984470371] [2022-11-18 18:25:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:11,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:11,612 INFO L87 Difference]: Start difference. First operand 155 states and 201 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:11,678 INFO L93 Difference]: Finished difference Result 289 states and 377 transitions. [2022-11-18 18:25:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:25:11,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 18:25:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:11,685 INFO L225 Difference]: With dead ends: 289 [2022-11-18 18:25:11,685 INFO L226 Difference]: Without dead ends: 141 [2022-11-18 18:25:11,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:11,695 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:11,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-18 18:25:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 126. [2022-11-18 18:25:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 109 states have internal predecessors, (131), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-18 18:25:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 157 transitions. [2022-11-18 18:25:11,724 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 157 transitions. Word has length 33 [2022-11-18 18:25:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:11,724 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 157 transitions. [2022-11-18 18:25:11,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 157 transitions. [2022-11-18 18:25:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 18:25:11,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:11,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:11,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:25:11,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 299335100, now seen corresponding path program 1 times [2022-11-18 18:25:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:11,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321489017] [2022-11-18 18:25:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:25:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:11,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321489017] [2022-11-18 18:25:11,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321489017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:11,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:11,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:25:11,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718827693] [2022-11-18 18:25:11,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:11,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:25:11,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:11,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:25:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:11,929 INFO L87 Difference]: Start difference. First operand 126 states and 157 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2022-11-18 18:25:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:12,031 INFO L93 Difference]: Finished difference Result 243 states and 305 transitions. [2022-11-18 18:25:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:12,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 35 [2022-11-18 18:25:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:12,037 INFO L225 Difference]: With dead ends: 243 [2022-11-18 18:25:12,038 INFO L226 Difference]: Without dead ends: 124 [2022-11-18 18:25:12,038 INFO L412 NwaCegarLoop]: 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 [2022-11-18 18:25:12,047 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 25 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:12,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 248 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-18 18:25:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-18 18:25:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.27) internal successors, (127), 107 states have internal predecessors, (127), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-18 18:25:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2022-11-18 18:25:12,075 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 35 [2022-11-18 18:25:12,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:12,076 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2022-11-18 18:25:12,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2022-11-18 18:25:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2022-11-18 18:25:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:25:12,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:12,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:25:12,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash -77276925, now seen corresponding path program 1 times [2022-11-18 18:25:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647330132] [2022-11-18 18:25:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:25:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:12,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647330132] [2022-11-18 18:25:12,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647330132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:12,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:25:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092617987] [2022-11-18 18:25:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:12,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:25:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:25:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:25:12,261 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-11-18 18:25:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:12,522 INFO L93 Difference]: Finished difference Result 323 states and 425 transitions. [2022-11-18 18:25:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:25:12,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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 37 [2022-11-18 18:25:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:12,525 INFO L225 Difference]: With dead ends: 323 [2022-11-18 18:25:12,526 INFO L226 Difference]: Without dead ends: 241 [2022-11-18 18:25:12,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:25:12,527 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 91 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:12,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 368 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:25:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-18 18:25:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-11-18 18:25:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.2371134020618557) internal successors, (240), 208 states have internal predecessors, (240), 22 states have call successors, (22), 19 states have call predecessors, (22), 22 states have return successors, (39), 21 states have call predecessors, (39), 22 states have call successors, (39) [2022-11-18 18:25:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 301 transitions. [2022-11-18 18:25:12,560 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 301 transitions. Word has length 37 [2022-11-18 18:25:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:12,561 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 301 transitions. [2022-11-18 18:25:12,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-11-18 18:25:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 301 transitions. [2022-11-18 18:25:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 18:25:12,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:12,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:12,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:25:12,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash -294819370, now seen corresponding path program 1 times [2022-11-18 18:25:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:12,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596144178] [2022-11-18 18:25:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:25:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 18:25:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:12,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596144178] [2022-11-18 18:25:12,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596144178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:12,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:12,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:25:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123254598] [2022-11-18 18:25:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:25:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:25:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:25:12,723 INFO L87 Difference]: Start difference. First operand 239 states and 301 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:25:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:12,998 INFO L93 Difference]: Finished difference Result 255 states and 318 transitions. [2022-11-18 18:25:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:25:12,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 3 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 39 [2022-11-18 18:25:12,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:13,001 INFO L225 Difference]: With dead ends: 255 [2022-11-18 18:25:13,001 INFO L226 Difference]: Without dead ends: 253 [2022-11-18 18:25:13,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:25:13,003 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 95 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:13,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 308 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-18 18:25:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 239. [2022-11-18 18:25:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.2268041237113403) internal successors, (238), 208 states have internal predecessors, (238), 22 states have call successors, (22), 19 states have call predecessors, (22), 22 states have return successors, (39), 21 states have call predecessors, (39), 22 states have call successors, (39) [2022-11-18 18:25:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 299 transitions. [2022-11-18 18:25:13,036 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 299 transitions. Word has length 39 [2022-11-18 18:25:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:13,036 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 299 transitions. [2022-11-18 18:25:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:25:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 299 transitions. [2022-11-18 18:25:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 18:25:13,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:13,038 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:25:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:25:13,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1467796324, now seen corresponding path program 1 times [2022-11-18 18:25:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164648717] [2022-11-18 18:25:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:25:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:25:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 18:25:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:13,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:13,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164648717] [2022-11-18 18:25:13,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164648717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:25:13,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936029194] [2022-11-18 18:25:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:13,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:13,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:13,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:13,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:25:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:13,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:25:13,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:13,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:13,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936029194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:13,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:25:13,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2022-11-18 18:25:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538238813] [2022-11-18 18:25:13,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:13,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:25:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:25:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:25:13,715 INFO L87 Difference]: Start difference. First operand 239 states and 299 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:25:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:14,340 INFO L93 Difference]: Finished difference Result 548 states and 724 transitions. [2022-11-18 18:25:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:25:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2022-11-18 18:25:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:14,344 INFO L225 Difference]: With dead ends: 548 [2022-11-18 18:25:14,344 INFO L226 Difference]: Without dead ends: 351 [2022-11-18 18:25:14,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 123 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:25:14,346 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 177 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:14,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 457 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:25:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-18 18:25:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 323. [2022-11-18 18:25:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 260 states have (on average 1.2307692307692308) internal successors, (320), 279 states have internal predecessors, (320), 31 states have call successors, (31), 27 states have call predecessors, (31), 31 states have return successors, (58), 28 states have call predecessors, (58), 31 states have call successors, (58) [2022-11-18 18:25:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 409 transitions. [2022-11-18 18:25:14,413 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 409 transitions. Word has length 61 [2022-11-18 18:25:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:14,416 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 409 transitions. [2022-11-18 18:25:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:25:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 409 transitions. [2022-11-18 18:25:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 18:25:14,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:14,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 18:25:14,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:25:14,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1571547845, now seen corresponding path program 2 times [2022-11-18 18:25:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:14,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753127802] [2022-11-18 18:25:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:14,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:25:14,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:25:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:25:14,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:25:14,746 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:25:14,748 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:25:14,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:25:14,754 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:14,760 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:25:14,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:25:14 BoogieIcfgContainer [2022-11-18 18:25:14,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:25:14,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:25:14,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:25:14,875 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:25:14,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:09" (3/4) ... [2022-11-18 18:25:14,878 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 18:25:14,964 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:25:14,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:25:14,965 INFO L158 Benchmark]: Toolchain (without parser) took 6902.94ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 92.8MB in the beginning and 126.9MB in the end (delta: -34.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-18 18:25:14,966 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:25:14,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.03ms. Allocated memory is still 132.1MB. Free memory was 92.5MB in the beginning and 98.4MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:25:14,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.38ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:25:14,967 INFO L158 Benchmark]: Boogie Preprocessor took 62.54ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 94.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:25:14,967 INFO L158 Benchmark]: RCFGBuilder took 648.66ms. Allocated memory is still 132.1MB. Free memory was 94.8MB in the beginning and 80.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 18:25:14,968 INFO L158 Benchmark]: TraceAbstraction took 5281.95ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 79.6MB in the beginning and 133.2MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:25:14,968 INFO L158 Benchmark]: Witness Printer took 89.96ms. Allocated memory is still 178.3MB. Free memory was 133.2MB in the beginning and 126.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 18:25:14,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.03ms. Allocated memory is still 132.1MB. Free memory was 92.5MB in the beginning and 98.4MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.38ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.54ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 94.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 648.66ms. Allocated memory is still 132.1MB. Free memory was 94.8MB in the beginning and 80.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5281.95ms. Allocated memory was 132.1MB in the beginning and 178.3MB in the end (delta: 46.1MB). Free memory was 79.6MB in the beginning and 133.2MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 89.96ms. Allocated memory is still 178.3MB. Free memory was 133.2MB in the beginning and 126.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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: 879]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L626] int methaneLevelCritical = 0; [L722] int pumpRunning = 0; [L625] int waterLevel = 1; [L723] int systemActive = 1; [L416] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] int retValue_acc ; [L498] int tmp ; [L502] FCALL select_helpers() [L503] FCALL select_features() [L504] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L504] RET, EXPR valid_product() [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) [L508] FCALL setup() [L509] CALL runTest() [L488] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L577] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L643] COND TRUE waterLevel < 2 [L644] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L577] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L608] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L730] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L762] COND TRUE ! pumpRunning [L764] CALL, EXPR isHighWaterLevel() [L856] int retValue_acc ; [L857] int tmp ; [L858] int tmp___0 ; [L862] CALL, EXPR isHighWaterSensorDry() [L705] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L708] COND FALSE !(waterLevel < 2) [L712] retValue_acc = 0 [L713] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L862] RET, EXPR isHighWaterSensorDry() [L862] tmp = isHighWaterSensorDry() [L864] COND FALSE !(\read(tmp)) [L867] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L869] retValue_acc = tmp___0 [L870] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L764] RET, EXPR isHighWaterLevel() [L764] tmp = isHighWaterLevel() [L766] COND TRUE \read(tmp) [L768] CALL activatePump() [L787] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L768] RET activatePump() [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L745] RET __utac_acc__Specification4_spec__1() [L608] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L608] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L730] COND TRUE \read(pumpRunning) [L732] CALL lowerWaterLevel() [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L732] RET lowerWaterLevel() [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L762] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L777] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L745] RET __utac_acc__Specification4_spec__1() [L608] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L608] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L730] COND TRUE \read(pumpRunning) [L732] CALL lowerWaterLevel() [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L732] RET lowerWaterLevel() [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L762] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L777] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND TRUE tmp == 0 [L894] CALL, EXPR isPumpRunning() [L811] int retValue_acc ; [L814] retValue_acc = pumpRunning [L815] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L894] RET, EXPR isPumpRunning() [L894] tmp___0 = isPumpRunning() [L896] COND TRUE \read(tmp___0) [L898] CALL __automaton_fail() [L879] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 622 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 606 mSDsluCounter, 2368 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1548 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 552 IncrementalHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 820 mSDtfsCounter, 552 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 153 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=11, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 472 ConstructedInterpolants, 0 QuantifiedInterpolants, 944 SizeOfPredicates, 4 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 35/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-18 18:25:14,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef0b2d0f-d04c-42fa-9316-170d0b82dd48/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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