./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/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_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/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_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/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 cb53e49317620dbde25b1d7f6fa7078b4950e13e4d138c624b27be1c4ee0f3ad --- 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 18:40:45,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:40:45,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:40:45,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:40:45,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:40:45,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:40:45,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:40:45,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:40:45,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:40:45,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:40:45,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:40:45,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:40:45,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:40:45,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:40:45,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:40:45,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:40:45,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:40:45,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:40:45,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:40:45,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:40:45,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:40:45,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:40:45,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:40:45,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:40:45,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:40:45,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:40:45,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:40:45,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:40:45,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:40:45,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:40:45,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:40:45,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:40:45,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:40:45,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:40:45,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:40:45,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:40:45,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:40:45,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:40:45,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:40:45,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:40:45,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:40:45,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:40:45,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:40:45,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:40:45,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:40:45,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:40:45,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:40:45,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:40:45,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:40:45,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:40:45,513 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:40:45,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:40:45,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:40:45,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:40:45,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:40:45,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:40:45,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:40:45,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:40:45,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:40:45,516 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:40:45,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:40:45,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:40:45,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:40:45,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:40:45,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:40:45,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:40:45,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:40:45,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:40:45,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:40:45,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:40:45,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:40:45,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:40:45,520 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:40:45,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:40:45,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:40:45,521 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_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb53e49317620dbde25b1d7f6fa7078b4950e13e4d138c624b27be1c4ee0f3ad [2022-11-18 18:40:45,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:40:45,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:40:45,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:40:45,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:40:45,959 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:40:45,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2022-11-18 18:40:46,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/data/8d82d9637/e4955603f56147c5b2ca974b9d5cf4de/FLAG5e338ae35 [2022-11-18 18:40:46,767 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:40:46,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2022-11-18 18:40:46,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/data/8d82d9637/e4955603f56147c5b2ca974b9d5cf4de/FLAG5e338ae35 [2022-11-18 18:40:47,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/data/8d82d9637/e4955603f56147c5b2ca974b9d5cf4de [2022-11-18 18:40:47,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:40:47,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:40:47,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:40:47,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:40:47,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:40:47,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d27a037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47, skipping insertion in model container [2022-11-18 18:40:47,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:40:47,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:40:47,492 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_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c[1605,1618] [2022-11-18 18:40:47,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:40:47,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:40:47,676 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_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c[1605,1618] [2022-11-18 18:40:47,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:40:47,789 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:40:47,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47 WrapperNode [2022-11-18 18:40:47,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:40:47,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:40:47,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:40:47,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:40:47,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,883 INFO L138 Inliner]: procedures = 55, calls = 98, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 188 [2022-11-18 18:40:47,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:40:47,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:40:47,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:40:47,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:40:47,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:40:47,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:40:47,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:40:47,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:40:47,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (1/1) ... [2022-11-18 18:40:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:40:47,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:47,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:40:47,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:40:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:40:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-18 18:40:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-18 18:40:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-18 18:40:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-18 18:40:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 18:40:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 18:40:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 18:40:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 18:40:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-18 18:40:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-18 18:40:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:40:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-18 18:40:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-18 18:40:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:40:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:40:48,133 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:40:48,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:40:48,449 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:40:48,457 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:40:48,457 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:40:48,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:48 BoogieIcfgContainer [2022-11-18 18:40:48,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:40:48,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:40:48,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:40:48,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:40:48,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:40:47" (1/3) ... [2022-11-18 18:40:48,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:48, skipping insertion in model container [2022-11-18 18:40:48,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:47" (2/3) ... [2022-11-18 18:40:48,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:48, skipping insertion in model container [2022-11-18 18:40:48,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:48" (3/3) ... [2022-11-18 18:40:48,471 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2022-11-18 18:40:48,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:40:48,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:40:48,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:40:48,568 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;@b1c5004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:40:48,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:40:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 66 states have (on average 1.378787878787879) internal successors, (91), 72 states have internal predecessors, (91), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 18:40:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 18:40:48,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:48,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:48,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1891059469, now seen corresponding path program 1 times [2022-11-18 18:40:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:48,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588467783] [2022-11-18 18:40:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:40:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,041 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 18:40:49,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:49,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588467783] [2022-11-18 18:40:49,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588467783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:49,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:49,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:40:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174233743] [2022-11-18 18:40:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:49,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:40:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:40:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:40:49,114 INFO L87 Difference]: Start difference. First operand has 84 states, 66 states have (on average 1.378787878787879) internal successors, (91), 72 states have internal predecessors, (91), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:40:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:49,198 INFO L93 Difference]: Finished difference Result 160 states and 217 transitions. [2022-11-18 18:40:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:40:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-18 18:40:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:49,229 INFO L225 Difference]: With dead ends: 160 [2022-11-18 18:40:49,236 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 18:40:49,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:40:49,245 INFO L413 NwaCegarLoop]: 105 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, 105 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 18:40:49,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 18:40:49,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-18 18:40:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.305084745762712) internal successors, (77), 64 states have internal predecessors, (77), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:40:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2022-11-18 18:40:49,331 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 23 [2022-11-18 18:40:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:49,332 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2022-11-18 18:40:49,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:40:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2022-11-18 18:40:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:40:49,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:49,340 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 18:40:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:40:49,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:49,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1547357138, now seen corresponding path program 1 times [2022-11-18 18:40:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:49,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183354911] [2022-11-18 18:40:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:40:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,591 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 18:40:49,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:49,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183354911] [2022-11-18 18:40:49,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183354911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:49,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:49,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699356251] [2022-11-18 18:40:49,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:49,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:49,606 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:40:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:49,637 INFO L93 Difference]: Finished difference Result 111 states and 142 transitions. [2022-11-18 18:40:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:49,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-18 18:40:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:49,639 INFO L225 Difference]: With dead ends: 111 [2022-11-18 18:40:49,640 INFO L226 Difference]: Without dead ends: 66 [2022-11-18 18:40:49,641 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 18:40:49,643 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 18 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 144 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 18:40:49,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-18 18:40:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-18 18:40:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.320754716981132) internal successors, (70), 58 states have internal predecessors, (70), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 18:40:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2022-11-18 18:40:49,656 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 24 [2022-11-18 18:40:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:49,657 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2022-11-18 18:40:49,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:40:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2022-11-18 18:40:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:40:49,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:49,659 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 18:40:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:40:49,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash 628813452, now seen corresponding path program 1 times [2022-11-18 18:40:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:49,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708445803] [2022-11-18 18:40:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 18:40:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,853 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 18:40:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708445803] [2022-11-18 18:40:49,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708445803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:49,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:49,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:40:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202752909] [2022-11-18 18:40:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:40:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:40:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:40:49,858 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:40:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:49,991 INFO L93 Difference]: Finished difference Result 164 states and 213 transitions. [2022-11-18 18:40:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:40:49,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-18 18:40:49,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:49,994 INFO L225 Difference]: With dead ends: 164 [2022-11-18 18:40:49,995 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 18:40:49,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:40:49,997 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:49,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 285 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:40:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 18:40:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2022-11-18 18:40:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 86 states have internal predecessors, (106), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-18 18:40:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2022-11-18 18:40:50,022 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 29 [2022-11-18 18:40:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:50,022 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2022-11-18 18:40:50,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:40:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2022-11-18 18:40:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:40:50,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:50,024 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] [2022-11-18 18:40:50,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:40:50,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash -470396509, now seen corresponding path program 1 times [2022-11-18 18:40:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:50,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878900569] [2022-11-18 18:40:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 18:40:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,194 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 18:40:50,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:50,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878900569] [2022-11-18 18:40:50,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878900569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:50,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:50,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:40:50,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258587507] [2022-11-18 18:40:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:50,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:40:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:40:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:40:50,198 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 18:40:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:50,281 INFO L93 Difference]: Finished difference Result 239 states and 317 transitions. [2022-11-18 18:40:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:40:50,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 32 [2022-11-18 18:40:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:50,284 INFO L225 Difference]: With dead ends: 239 [2022-11-18 18:40:50,284 INFO L226 Difference]: Without dead ends: 146 [2022-11-18 18:40:50,286 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 18:40:50,287 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 57 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:50,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 315 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-18 18:40:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 137. [2022-11-18 18:40:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 116 states have internal predecessors, (138), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-18 18:40:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 172 transitions. [2022-11-18 18:40:50,338 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 172 transitions. Word has length 32 [2022-11-18 18:40:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:50,338 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 172 transitions. [2022-11-18 18:40:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 18:40:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 172 transitions. [2022-11-18 18:40:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 18:40:50,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:50,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:50,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:40:50,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1916118752, now seen corresponding path program 1 times [2022-11-18 18:40:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:50,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070952659] [2022-11-18 18:40:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:50,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:40:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:40:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:40:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:50,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070952659] [2022-11-18 18:40:50,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070952659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:50,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:50,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:40:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043400161] [2022-11-18 18:40:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:50,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:40:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:40:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:40:50,548 INFO L87 Difference]: Start difference. First operand 137 states and 172 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:40:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:50,629 INFO L93 Difference]: Finished difference Result 291 states and 377 transitions. [2022-11-18 18:40:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:40:50,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-18 18:40:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:50,632 INFO L225 Difference]: With dead ends: 291 [2022-11-18 18:40:50,633 INFO L226 Difference]: Without dead ends: 161 [2022-11-18 18:40:50,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:40:50,636 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 35 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:50,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 368 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-18 18:40:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 140. [2022-11-18 18:40:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.2818181818181817) internal successors, (141), 119 states have internal predecessors, (141), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-18 18:40:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 175 transitions. [2022-11-18 18:40:50,662 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 175 transitions. Word has length 46 [2022-11-18 18:40:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:50,663 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 175 transitions. [2022-11-18 18:40:50,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:40:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 175 transitions. [2022-11-18 18:40:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 18:40:50,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:50,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:50,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:40:50,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1782105246, now seen corresponding path program 1 times [2022-11-18 18:40:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:50,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159795799] [2022-11-18 18:40:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:40:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:40:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:40:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159795799] [2022-11-18 18:40:50,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159795799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:50,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:50,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:40:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596243662] [2022-11-18 18:40:50,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:40:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:50,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:40:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:40:50,799 INFO L87 Difference]: Start difference. First operand 140 states and 175 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:40:50,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:50,883 INFO L93 Difference]: Finished difference Result 300 states and 387 transitions. [2022-11-18 18:40:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:40:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-18 18:40:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:50,886 INFO L225 Difference]: With dead ends: 300 [2022-11-18 18:40:50,887 INFO L226 Difference]: Without dead ends: 167 [2022-11-18 18:40:50,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:40:50,890 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 73 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:50,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 441 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-18 18:40:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 142. [2022-11-18 18:40:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 121 states have internal predecessors, (143), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-18 18:40:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2022-11-18 18:40:50,918 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 46 [2022-11-18 18:40:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:50,919 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2022-11-18 18:40:50,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:40:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2022-11-18 18:40:50,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 18:40:50,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:50,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:40:50,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1844144860, now seen corresponding path program 1 times [2022-11-18 18:40:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908509233] [2022-11-18 18:40:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:40:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:40:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:40:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:51,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908509233] [2022-11-18 18:40:51,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908509233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:51,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:51,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:51,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167074152] [2022-11-18 18:40:51,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:51,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:51,088 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:40:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:51,155 INFO L93 Difference]: Finished difference Result 352 states and 447 transitions. [2022-11-18 18:40:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:51,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-18 18:40:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:51,160 INFO L225 Difference]: With dead ends: 352 [2022-11-18 18:40:51,160 INFO L226 Difference]: Without dead ends: 217 [2022-11-18 18:40:51,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:51,168 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 38 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:51,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 159 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-18 18:40:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-11-18 18:40:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.2573099415204678) internal successors, (215), 182 states have internal predecessors, (215), 24 states have call successors, (24), 23 states have call predecessors, (24), 21 states have return successors, (29), 22 states have call predecessors, (29), 24 states have call successors, (29) [2022-11-18 18:40:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 268 transitions. [2022-11-18 18:40:51,235 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 268 transitions. Word has length 46 [2022-11-18 18:40:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:51,239 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 268 transitions. [2022-11-18 18:40:51,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:40:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 268 transitions. [2022-11-18 18:40:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 18:40:51,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:51,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:40:51,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -841963393, now seen corresponding path program 1 times [2022-11-18 18:40:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:51,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118661534] [2022-11-18 18:40:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:40:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:40:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 18:40:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:40:51,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:51,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118661534] [2022-11-18 18:40:51,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118661534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:51,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:51,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:40:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243256200] [2022-11-18 18:40:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:51,327 INFO L87 Difference]: Start difference. First operand 217 states and 268 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:40:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:51,492 INFO L93 Difference]: Finished difference Result 482 states and 596 transitions. [2022-11-18 18:40:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2022-11-18 18:40:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:51,500 INFO L225 Difference]: With dead ends: 482 [2022-11-18 18:40:51,500 INFO L226 Difference]: Without dead ends: 272 [2022-11-18 18:40:51,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 18:40:51,508 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 87 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:51,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 238 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:40:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-18 18:40:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 264. [2022-11-18 18:40:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 209 states have (on average 1.2392344497607655) internal successors, (259), 226 states have internal predecessors, (259), 29 states have call successors, (29), 23 states have call predecessors, (29), 25 states have return successors, (35), 27 states have call predecessors, (35), 29 states have call successors, (35) [2022-11-18 18:40:51,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 323 transitions. [2022-11-18 18:40:51,563 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 323 transitions. Word has length 53 [2022-11-18 18:40:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:51,563 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 323 transitions. [2022-11-18 18:40:51,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:40:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 323 transitions. [2022-11-18 18:40:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 18:40:51,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:51,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:40:51,566 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1488971454, now seen corresponding path program 1 times [2022-11-18 18:40:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:51,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855217438] [2022-11-18 18:40:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:40:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 18:40:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 18:40:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:40:51,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:51,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855217438] [2022-11-18 18:40:51,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855217438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:51,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:51,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:40:51,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334573648] [2022-11-18 18:40:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:51,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:40:51,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:40:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:40:51,761 INFO L87 Difference]: Start difference. First operand 264 states and 323 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:40:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:52,617 INFO L93 Difference]: Finished difference Result 825 states and 1035 transitions. [2022-11-18 18:40:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:40:52,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-18 18:40:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:52,624 INFO L225 Difference]: With dead ends: 825 [2022-11-18 18:40:52,624 INFO L226 Difference]: Without dead ends: 568 [2022-11-18 18:40:52,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:40:52,630 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 253 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:52,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 629 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:40:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-18 18:40:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 495. [2022-11-18 18:40:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 388 states have (on average 1.211340206185567) internal successors, (470), 415 states have internal predecessors, (470), 56 states have call successors, (56), 46 states have call predecessors, (56), 50 states have return successors, (75), 52 states have call predecessors, (75), 56 states have call successors, (75) [2022-11-18 18:40:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 601 transitions. [2022-11-18 18:40:52,737 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 601 transitions. Word has length 50 [2022-11-18 18:40:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:52,738 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 601 transitions. [2022-11-18 18:40:52,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:40:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 601 transitions. [2022-11-18 18:40:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 18:40:52,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:52,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:52,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:40:52,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1541803347, now seen corresponding path program 1 times [2022-11-18 18:40:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386953205] [2022-11-18 18:40:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:52,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:40:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 18:40:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 18:40:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:40:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 18:40:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:40:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 18:40:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 18:40:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:40:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:53,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386953205] [2022-11-18 18:40:53,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386953205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:53,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411371981] [2022-11-18 18:40:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:53,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:53,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:53,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:53,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:40:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:40:53,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 18:40:53,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:53,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411371981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:53,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:40:53,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2022-11-18 18:40:53,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877422497] [2022-11-18 18:40:53,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:53,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:40:53,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:40:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:40:53,712 INFO L87 Difference]: Start difference. First operand 495 states and 601 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:40:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:53,950 INFO L93 Difference]: Finished difference Result 1003 states and 1220 transitions. [2022-11-18 18:40:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:40:53,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2022-11-18 18:40:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:53,957 INFO L225 Difference]: With dead ends: 1003 [2022-11-18 18:40:53,958 INFO L226 Difference]: Without dead ends: 515 [2022-11-18 18:40:53,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:40:53,960 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 78 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:53,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 533 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:40:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-18 18:40:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 487. [2022-11-18 18:40:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 382 states have (on average 1.1963350785340314) internal successors, (457), 409 states have internal predecessors, (457), 55 states have call successors, (55), 46 states have call predecessors, (55), 49 states have return successors, (65), 51 states have call predecessors, (65), 55 states have call successors, (65) [2022-11-18 18:40:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 577 transitions. [2022-11-18 18:40:54,063 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 577 transitions. Word has length 87 [2022-11-18 18:40:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:54,064 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 577 transitions. [2022-11-18 18:40:54,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:40:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 577 transitions. [2022-11-18 18:40:54,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 18:40:54,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:54,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:54,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:54,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:54,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:54,278 INFO L85 PathProgramCache]: Analyzing trace with hash -892169705, now seen corresponding path program 1 times [2022-11-18 18:40:54,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:54,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596174410] [2022-11-18 18:40:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:54,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:40:54,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:40:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:40:54,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:40:54,377 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:40:54,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:40:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:40:54,385 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:54,390 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:40:54,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:40:54 BoogieIcfgContainer [2022-11-18 18:40:54,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:40:54,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:40:54,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:40:54,508 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:40:54,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:48" (3/4) ... [2022-11-18 18:40:54,511 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 18:40:54,631 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:40:54,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:40:54,632 INFO L158 Benchmark]: Toolchain (without parser) took 7545.00ms. Allocated memory was 109.1MB in the beginning and 182.5MB in the end (delta: 73.4MB). Free memory was 78.6MB in the beginning and 116.4MB in the end (delta: -37.8MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-11-18 18:40:54,632 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory was 61.8MB in the beginning and 61.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:40:54,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 697.52ms. Allocated memory is still 109.1MB. Free memory was 78.3MB in the beginning and 77.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:40:54,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.71ms. Allocated memory is still 109.1MB. Free memory was 77.0MB in the beginning and 75.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:40:54,633 INFO L158 Benchmark]: Boogie Preprocessor took 30.99ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:40:54,634 INFO L158 Benchmark]: RCFGBuilder took 543.66ms. Allocated memory is still 109.1MB. Free memory was 73.4MB in the beginning and 57.8MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 18:40:54,635 INFO L158 Benchmark]: TraceAbstraction took 6044.78ms. Allocated memory was 109.1MB in the beginning and 182.5MB in the end (delta: 73.4MB). Free memory was 57.3MB in the beginning and 122.7MB in the end (delta: -65.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-11-18 18:40:54,636 INFO L158 Benchmark]: Witness Printer took 123.25ms. Allocated memory is still 182.5MB. Free memory was 122.7MB in the beginning and 116.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 18:40:54,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory was 61.8MB in the beginning and 61.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 697.52ms. Allocated memory is still 109.1MB. Free memory was 78.3MB in the beginning and 77.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.71ms. Allocated memory is still 109.1MB. Free memory was 77.0MB in the beginning and 75.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.99ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 543.66ms. Allocated memory is still 109.1MB. Free memory was 73.4MB in the beginning and 57.8MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6044.78ms. Allocated memory was 109.1MB in the beginning and 182.5MB in the end (delta: 73.4MB). Free memory was 57.3MB in the beginning and 122.7MB in the end (delta: -65.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Witness Printer took 123.25ms. Allocated memory is still 182.5MB. Free memory was 122.7MB in the beginning and 116.4MB 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: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L228] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L704] int methaneLevelCritical = 0; [L508] int pumpRunning = 0; [L703] int waterLevel = 1; [L509] int systemActive = 1; [L861] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L934] int retValue_acc ; [L935] int tmp ; [L939] FCALL select_helpers() [L940] FCALL select_features() [L941] CALL, EXPR valid_product() [L852] int retValue_acc ; [L855] retValue_acc = 1 [L856] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L941] RET, EXPR valid_product() [L941] tmp = valid_product() [L943] COND TRUE \read(tmp) [L945] FCALL setup() [L946] CALL runTest() [L928] CALL test() [L432] int splverifierCounter ; [L433] int tmp ; [L434] int tmp___0 ; [L435] int tmp___1 ; [L436] int tmp___2 ; [L439] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L441] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L443] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L449] tmp = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L453] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L721] COND TRUE waterLevel < 2 [L722] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L453] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L459] tmp___0 = __VERIFIER_nondet_int() [L461] 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] [L469] tmp___2 = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp___2) [L473] CALL startSystem() [L697] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L473] RET startSystem() [L488] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L516] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L523] COND TRUE \read(systemActive) [L525] CALL processEnvironment() [L545] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] COND TRUE ! pumpRunning [L550] CALL, EXPR isHighWaterLevel() [L660] int retValue_acc ; [L661] int tmp ; [L662] int tmp___0 ; [L666] CALL, EXPR isHighWaterSensorDry() [L783] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L786] COND FALSE !(waterLevel < 2) [L790] retValue_acc = 0 [L791] 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] [L666] RET, EXPR isHighWaterSensorDry() [L666] tmp = isHighWaterSensorDry() [L668] COND FALSE !(\read(tmp)) [L671] 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] [L673] retValue_acc = tmp___0 [L674] 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] [L550] RET, EXPR isHighWaterLevel() [L550] tmp = isHighWaterLevel() [L552] COND TRUE \read(tmp) [L554] CALL activatePump() [L579] int tmp ; [L583] CALL, EXPR isMethaneAlarm() [L604] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L608] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] 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] [L608] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L608] retValue_acc = isMethaneLevelCritical() [L610] 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] [L583] RET, EXPR isMethaneAlarm() [L583] tmp = isMethaneAlarm() [L585] COND FALSE !(\read(tmp)) [L589] CALL activatePump__wrappee__highWaterSensor() [L573] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L589] RET activatePump__wrappee__highWaterSensor() [L554] RET activatePump() [L525] RET processEnvironment() [L531] CALL __utac_acc__Specification1_spec__1() [L798] int tmp ; [L799] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L803] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L803] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L531] RET __utac_acc__Specification1_spec__1() [L488] 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] [L441] 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] [L443] 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] [L449] tmp = __VERIFIER_nondet_int() [L451] 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] [L459] tmp___0 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L463] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L733] COND FALSE !(\read(methaneLevelCritical)) [L736] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L463] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L469] tmp___2 = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp___2) [L473] CALL startSystem() [L697] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L473] RET startSystem() [L488] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] COND TRUE \read(pumpRunning) [L518] CALL lowerWaterLevel() [L709] COND TRUE waterLevel > 0 [L710] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L518] RET lowerWaterLevel() [L523] COND TRUE \read(systemActive) [L525] CALL processEnvironment() [L545] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L548] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L563] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L525] RET processEnvironment() [L531] CALL __utac_acc__Specification1_spec__1() [L798] int tmp ; [L799] int tmp___0 ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L803] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L803] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L803] tmp = isMethaneLevelCritical() [L805] COND TRUE \read(tmp) [L807] CALL, EXPR isPumpRunning() [L615] int retValue_acc ; [L618] retValue_acc = pumpRunning [L619] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L807] RET, EXPR isPumpRunning() [L807] tmp___0 = isPumpRunning() [L809] COND TRUE \read(tmp___0) [L811] CALL __automaton_fail() [L54] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 816 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 791 mSDsluCounter, 3217 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2202 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 626 IncrementalHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 1015 mSDtfsCounter, 626 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=9, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 169 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 512 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 4 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 71/77 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 18:40:54,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abbaf61-82d7-42ad-b07e-1d7b4683d1cb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE