./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y --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 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:31:55,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:31:55,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:31:55,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:31:55,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:31:55,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:31:55,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:31:55,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:31:55,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:31:55,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:31:55,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:31:55,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:31:55,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:31:55,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:31:55,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:31:55,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:31:55,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:31:55,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:31:55,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:31:55,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:31:55,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:31:55,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:31:55,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:31:55,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:31:55,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:31:55,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:31:55,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:31:55,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:31:55,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:31:55,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:31:55,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:31:55,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:31:55,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:31:55,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:31:55,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:31:55,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:31:55,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:31:55,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:31:55,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:31:55,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:31:55,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:31:55,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:31:55,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:31:55,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:31:55,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:31:55,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:31:55,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:31:55,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:31:55,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:31:55,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:31:55,529 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:31:55,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:31:55,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:31:55,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:31:55,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:31:55,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:31:55,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:31:55,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:31:55,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:31:55,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:31:55,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:31:55,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:31:55,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:31:55,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:31:55,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:31:55,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:31:55,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:31:55,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:31:55,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:31:55,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:31:55,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:31:55,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:31:55,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:31:55,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:31:55,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:31:55,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:31:55,539 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_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b [2021-11-13 18:31:55,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:31:55,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:31:55,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:31:55,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:31:55,891 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:31:55,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-11-13 18:31:55,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/d66343a7d/f0e57dbe451d4083a2a488e949beac13/FLAG64e1086a1 [2021-11-13 18:31:56,602 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:31:56,603 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-11-13 18:31:56,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/d66343a7d/f0e57dbe451d4083a2a488e949beac13/FLAG64e1086a1 [2021-11-13 18:31:56,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/d66343a7d/f0e57dbe451d4083a2a488e949beac13 [2021-11-13 18:31:56,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:31:56,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:31:56,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:31:56,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:31:56,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:31:56,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:31:56" (1/1) ... [2021-11-13 18:31:56,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d41ebd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:56, skipping insertion in model container [2021-11-13 18:31:56,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:31:56" (1/1) ... [2021-11-13 18:31:56,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:31:57,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:31:57,276 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-11-13 18:31:57,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:31:57,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:31:57,430 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-11-13 18:31:57,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:31:57,534 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:31:57,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57 WrapperNode [2021-11-13 18:31:57,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:31:57,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:31:57,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:31:57,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:31:57,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:31:57,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:31:57,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:31:57,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:31:57,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:31:57,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:31:57,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:31:57,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:31:57,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (1/1) ... [2021-11-13 18:31:57,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:31:57,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:31:57,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:31:57,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:31:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:31:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-13 18:31:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-13 18:31:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-13 18:31:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-13 18:31:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-13 18:31:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-13 18:31:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-13 18:31:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-13 18:31:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:31:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-13 18:31:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-13 18:31:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:31:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:31:58,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:31:58,704 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:31:58,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:31:58 BoogieIcfgContainer [2021-11-13 18:31:58,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:31:58,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:31:58,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:31:58,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:31:58,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:31:56" (1/3) ... [2021-11-13 18:31:58,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e439af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:31:58, skipping insertion in model container [2021-11-13 18:31:58,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:57" (2/3) ... [2021-11-13 18:31:58,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e439af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:31:58, skipping insertion in model container [2021-11-13 18:31:58,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:31:58" (3/3) ... [2021-11-13 18:31:58,723 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-11-13 18:31:58,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:31:58,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:31:58,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:31:58,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:31:58,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:31:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 69 states have internal predecessors, (88), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 18:31:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:31:58,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:58,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:58,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:31:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -868702973, now seen corresponding path program 1 times [2021-11-13 18:31:58,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:58,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851040332] [2021-11-13 18:31:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:58,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:31:59,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:59,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851040332] [2021-11-13 18:31:59,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851040332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:59,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:59,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:31:59,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333506812] [2021-11-13 18:31:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:59,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:31:59,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:31:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:31:59,426 INFO L87 Difference]: Start difference. First operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 69 states have internal predecessors, (88), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:31:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:59,470 INFO L93 Difference]: Finished difference Result 148 states and 203 transitions. [2021-11-13 18:31:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:31:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 18:31:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:59,483 INFO L225 Difference]: With dead ends: 148 [2021-11-13 18:31:59,484 INFO L226 Difference]: Without dead ends: 69 [2021-11-13 18:31:59,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:31:59,494 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:59,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 2.55ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:31:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-13 18:31:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-13 18:31:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 61 states have internal predecessors, (74), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-13 18:31:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2021-11-13 18:31:59,554 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 19 [2021-11-13 18:31:59,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:59,554 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2021-11-13 18:31:59,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:31:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2021-11-13 18:31:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:31:59,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:59,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:59,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:31:59,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:31:59,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash 94087050, now seen corresponding path program 1 times [2021-11-13 18:31:59,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:59,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527116261] [2021-11-13 18:31:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:59,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:31:59,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:59,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527116261] [2021-11-13 18:31:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527116261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:59,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:31:59,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314797250] [2021-11-13 18:31:59,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:59,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:31:59,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:31:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:31:59,726 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:31:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:59,759 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2021-11-13 18:31:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:31:59,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 18:31:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:59,770 INFO L225 Difference]: With dead ends: 100 [2021-11-13 18:31:59,770 INFO L226 Difference]: Without dead ends: 60 [2021-11-13 18:31:59,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:31:59,778 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 17 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:59,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 6.97ms Time] [2021-11-13 18:31:59,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-13 18:31:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-13 18:31:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.34) internal successors, (67), 55 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 18:31:59,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-13 18:31:59,803 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 20 [2021-11-13 18:31:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:59,807 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-13 18:31:59,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:31:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-13 18:31:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:31:59,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:59,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:59,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:31:59,810 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:31:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1425970454, now seen corresponding path program 1 times [2021-11-13 18:31:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:59,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123816043] [2021-11-13 18:31:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:59,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:31:59,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:59,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123816043] [2021-11-13 18:31:59,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123816043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:59,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:59,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:31:59,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089810898] [2021-11-13 18:31:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:59,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:31:59,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:31:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:31:59,927 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:31:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:59,967 INFO L93 Difference]: Finished difference Result 165 states and 217 transitions. [2021-11-13 18:31:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:31:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-13 18:31:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:59,970 INFO L225 Difference]: With dead ends: 165 [2021-11-13 18:31:59,970 INFO L226 Difference]: Without dead ends: 112 [2021-11-13 18:31:59,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:31:59,973 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:59,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 158 Invalid, 4 Unknown, 0 Unchecked, 3.04ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 13.43ms Time] [2021-11-13 18:31:59,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-13 18:31:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2021-11-13 18:32:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 97 states have internal predecessors, (120), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 18:32:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2021-11-13 18:32:00,003 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 24 [2021-11-13 18:32:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:00,003 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2021-11-13 18:32:00,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2021-11-13 18:32:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 18:32:00,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:00,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:00,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:32:00,007 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1915412127, now seen corresponding path program 1 times [2021-11-13 18:32:00,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:00,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852607250] [2021-11-13 18:32:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:00,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:00,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:00,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852607250] [2021-11-13 18:32:00,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852607250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:00,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:00,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:32:00,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561918611] [2021-11-13 18:32:00,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:00,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:32:00,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:32:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:32:00,194 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:00,336 INFO L93 Difference]: Finished difference Result 295 states and 401 transitions. [2021-11-13 18:32:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:32:00,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-13 18:32:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:00,341 INFO L225 Difference]: With dead ends: 295 [2021-11-13 18:32:00,341 INFO L226 Difference]: Without dead ends: 195 [2021-11-13 18:32:00,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:32:00,345 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 48 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.78ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:00,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 293 Invalid, 29 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 77.78ms Time] [2021-11-13 18:32:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-13 18:32:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-13 18:32:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 160 states have (on average 1.3375) internal successors, (214), 175 states have internal predecessors, (214), 20 states have call successors, (20), 16 states have call predecessors, (20), 14 states have return successors, (22), 14 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-13 18:32:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2021-11-13 18:32:00,397 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 28 [2021-11-13 18:32:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:00,398 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2021-11-13 18:32:00,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2021-11-13 18:32:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 18:32:00,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:00,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:00,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:32:00,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1184758052, now seen corresponding path program 1 times [2021-11-13 18:32:00,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:00,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079143837] [2021-11-13 18:32:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:00,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:00,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:00,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079143837] [2021-11-13 18:32:00,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079143837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:00,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:00,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:32:00,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308892097] [2021-11-13 18:32:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:00,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:32:00,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:32:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:32:00,500 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:00,555 INFO L93 Difference]: Finished difference Result 501 states and 675 transitions. [2021-11-13 18:32:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:32:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-13 18:32:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:00,565 INFO L225 Difference]: With dead ends: 501 [2021-11-13 18:32:00,565 INFO L226 Difference]: Without dead ends: 313 [2021-11-13 18:32:00,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:32:00,577 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 48 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:00,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 123 Invalid, 14 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 19.38ms Time] [2021-11-13 18:32:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-13 18:32:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2021-11-13 18:32:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 254 states have (on average 1.311023622047244) internal successors, (333), 273 states have internal predecessors, (333), 30 states have call successors, (30), 30 states have call predecessors, (30), 26 states have return successors, (42), 26 states have call predecessors, (42), 30 states have call successors, (42) [2021-11-13 18:32:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 405 transitions. [2021-11-13 18:32:00,667 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 405 transitions. Word has length 30 [2021-11-13 18:32:00,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:00,668 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 405 transitions. [2021-11-13 18:32:00,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 405 transitions. [2021-11-13 18:32:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-13 18:32:00,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:00,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:00,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:32:00,685 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1380463611, now seen corresponding path program 1 times [2021-11-13 18:32:00,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:00,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343710704] [2021-11-13 18:32:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:00,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:00,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:00,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343710704] [2021-11-13 18:32:00,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343710704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:00,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:00,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:00,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975102126] [2021-11-13 18:32:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:00,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:00,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:00,834 INFO L87 Difference]: Start difference. First operand 311 states and 405 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) 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) [2021-11-13 18:32:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:01,166 INFO L93 Difference]: Finished difference Result 417 states and 540 transitions. [2021-11-13 18:32:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:32:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) 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 [2021-11-13 18:32:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:01,175 INFO L225 Difference]: With dead ends: 417 [2021-11-13 18:32:01,175 INFO L226 Difference]: Without dead ends: 415 [2021-11-13 18:32:01,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:32:01,179 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 132 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.69ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:01,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 355 Invalid, 109 Unknown, 0 Unchecked, 6.69ms Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 204.04ms Time] [2021-11-13 18:32:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-13 18:32:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 389. [2021-11-13 18:32:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 320 states have (on average 1.29375) internal successors, (414), 351 states have internal predecessors, (414), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (54), 30 states have call predecessors, (54), 34 states have call successors, (54) [2021-11-13 18:32:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 502 transitions. [2021-11-13 18:32:01,242 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 502 transitions. Word has length 32 [2021-11-13 18:32:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:01,242 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 502 transitions. [2021-11-13 18:32:01,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) 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) [2021-11-13 18:32:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 502 transitions. [2021-11-13 18:32:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:32:01,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:01,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:01,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:32:01,245 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 788339160, now seen corresponding path program 1 times [2021-11-13 18:32:01,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:01,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423123649] [2021-11-13 18:32:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:01,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:01,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:01,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423123649] [2021-11-13 18:32:01,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423123649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:01,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:01,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:01,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199474259] [2021-11-13 18:32:01,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:01,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:01,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:01,331 INFO L87 Difference]: Start difference. First operand 389 states and 502 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:32:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:01,780 INFO L93 Difference]: Finished difference Result 1039 states and 1349 transitions. [2021-11-13 18:32:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:32:01,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 41 [2021-11-13 18:32:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:01,788 INFO L225 Difference]: With dead ends: 1039 [2021-11-13 18:32:01,789 INFO L226 Difference]: Without dead ends: 657 [2021-11-13 18:32:01,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:32:01,793 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 471 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.56ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:01,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 420 Invalid, 160 Unknown, 0 Unchecked, 9.56ms Time], IncrementalHoareTripleChecker [47 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 221.90ms Time] [2021-11-13 18:32:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-13 18:32:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 397. [2021-11-13 18:32:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 328 states have (on average 1.2804878048780488) internal successors, (420), 359 states have internal predecessors, (420), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (54), 30 states have call predecessors, (54), 34 states have call successors, (54) [2021-11-13 18:32:01,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 508 transitions. [2021-11-13 18:32:01,849 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 508 transitions. Word has length 41 [2021-11-13 18:32:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:01,849 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 508 transitions. [2021-11-13 18:32:01,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:32:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 508 transitions. [2021-11-13 18:32:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:32:01,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:01,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:01,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:32:01,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:01,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1809407514, now seen corresponding path program 1 times [2021-11-13 18:32:01,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:01,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298380462] [2021-11-13 18:32:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:01,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:01,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:01,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298380462] [2021-11-13 18:32:01,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298380462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:01,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:01,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:01,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930779905] [2021-11-13 18:32:01,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:01,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:01,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:01,940 INFO L87 Difference]: Start difference. First operand 397 states and 508 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:32:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:02,248 INFO L93 Difference]: Finished difference Result 819 states and 1051 transitions. [2021-11-13 18:32:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:32:02,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 41 [2021-11-13 18:32:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:02,254 INFO L225 Difference]: With dead ends: 819 [2021-11-13 18:32:02,254 INFO L226 Difference]: Without dead ends: 429 [2021-11-13 18:32:02,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:32:02,258 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 120 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 196.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:02,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 365 Invalid, 100 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 196.04ms Time] [2021-11-13 18:32:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-13 18:32:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 341. [2021-11-13 18:32:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 284 states have (on average 1.2640845070422535) internal successors, (359), 309 states have internal predecessors, (359), 28 states have call successors, (28), 24 states have call predecessors, (28), 28 states have return successors, (38), 26 states have call predecessors, (38), 28 states have call successors, (38) [2021-11-13 18:32:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 425 transitions. [2021-11-13 18:32:02,293 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 425 transitions. Word has length 41 [2021-11-13 18:32:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:02,293 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 425 transitions. [2021-11-13 18:32:02,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:32:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 425 transitions. [2021-11-13 18:32:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:32:02,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:02,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:02,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:32:02,296 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:02,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1205805546, now seen corresponding path program 1 times [2021-11-13 18:32:02,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:02,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100461771] [2021-11-13 18:32:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:02,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:02,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:02,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100461771] [2021-11-13 18:32:02,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100461771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:02,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:02,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:02,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603090556] [2021-11-13 18:32:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:02,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:02,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:02,390 INFO L87 Difference]: Start difference. First operand 341 states and 425 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:32:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:02,731 INFO L93 Difference]: Finished difference Result 765 states and 1011 transitions. [2021-11-13 18:32:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:32:02,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 41 [2021-11-13 18:32:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:02,736 INFO L225 Difference]: With dead ends: 765 [2021-11-13 18:32:02,737 INFO L226 Difference]: Without dead ends: 504 [2021-11-13 18:32:02,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:32:02,739 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 103 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.40ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:02,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 460 Invalid, 127 Unknown, 0 Unchecked, 4.40ms Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 235.90ms Time] [2021-11-13 18:32:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-13 18:32:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 502. [2021-11-13 18:32:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 413 states have (on average 1.2397094430992737) internal successors, (512), 444 states have internal predecessors, (512), 44 states have call successors, (44), 38 states have call predecessors, (44), 44 states have return successors, (78), 42 states have call predecessors, (78), 44 states have call successors, (78) [2021-11-13 18:32:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 634 transitions. [2021-11-13 18:32:02,801 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 634 transitions. Word has length 41 [2021-11-13 18:32:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:02,801 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 634 transitions. [2021-11-13 18:32:02,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:32:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 634 transitions. [2021-11-13 18:32:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:32:02,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:02,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:02,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:32:02,805 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1540827705, now seen corresponding path program 1 times [2021-11-13 18:32:02,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:02,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227236538] [2021-11-13 18:32:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:02,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:02,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:32:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:02,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:02,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227236538] [2021-11-13 18:32:02,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227236538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:02,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:02,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:02,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052596541] [2021-11-13 18:32:02,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:02,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:02,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:02,903 INFO L87 Difference]: Start difference. First operand 502 states and 634 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:32:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:03,205 INFO L93 Difference]: Finished difference Result 603 states and 763 transitions. [2021-11-13 18:32:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:32:03,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-11-13 18:32:03,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:03,208 INFO L225 Difference]: With dead ends: 603 [2021-11-13 18:32:03,208 INFO L226 Difference]: Without dead ends: 251 [2021-11-13 18:32:03,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:32:03,210 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 202 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:03,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 251 Invalid, 118 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [27 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 238.47ms Time] [2021-11-13 18:32:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-13 18:32:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-11-13 18:32:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 204 states have (on average 1.2009803921568627) internal successors, (245), 220 states have internal predecessors, (245), 22 states have call successors, (22), 19 states have call predecessors, (22), 22 states have return successors, (39), 21 states have call predecessors, (39), 22 states have call successors, (39) [2021-11-13 18:32:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 306 transitions. [2021-11-13 18:32:03,236 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 306 transitions. Word has length 64 [2021-11-13 18:32:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:03,237 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 306 transitions. [2021-11-13 18:32:03,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:32:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 306 transitions. [2021-11-13 18:32:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 18:32:03,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:03,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:03,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:32:03,239 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1768689849, now seen corresponding path program 1 times [2021-11-13 18:32:03,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:03,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993294225] [2021-11-13 18:32:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:03,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:32:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:32:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:03,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:03,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993294225] [2021-11-13 18:32:03,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993294225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:32:03,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484206871] [2021-11-13 18:32:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:03,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:03,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:32:03,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:32:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:03,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:32:03,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:03,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:04,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484206871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:32:04,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:32:04,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2021-11-13 18:32:04,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403008824] [2021-11-13 18:32:04,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:32:04,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:32:04,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:32:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:32:04,162 INFO L87 Difference]: Start difference. First operand 249 states and 306 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:32:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:04,766 INFO L93 Difference]: Finished difference Result 568 states and 735 transitions. [2021-11-13 18:32:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:32:04,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2021-11-13 18:32:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:04,770 INFO L225 Difference]: With dead ends: 568 [2021-11-13 18:32:04,770 INFO L226 Difference]: Without dead ends: 361 [2021-11-13 18:32:04,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:32:04,773 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 256 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 337.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.89ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 400.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:04,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 428 Invalid, 249 Unknown, 0 Unchecked, 5.89ms Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 400.19ms Time] [2021-11-13 18:32:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-13 18:32:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 333. [2021-11-13 18:32:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 270 states have (on average 1.2037037037037037) internal successors, (325), 291 states have internal predecessors, (325), 31 states have call successors, (31), 27 states have call predecessors, (31), 31 states have return successors, (58), 28 states have call predecessors, (58), 31 states have call successors, (58) [2021-11-13 18:32:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 414 transitions. [2021-11-13 18:32:04,810 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 414 transitions. Word has length 65 [2021-11-13 18:32:04,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:04,812 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 414 transitions. [2021-11-13 18:32:04,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:32:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 414 transitions. [2021-11-13 18:32:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 18:32:04,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:04,814 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:04,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 18:32:05,039 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:05,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1906131592, now seen corresponding path program 2 times [2021-11-13 18:32:05,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:05,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332080827] [2021-11-13 18:32:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:05,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:32:05,134 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:32:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:32:05,309 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:32:05,310 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:32:05,311 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:32:05,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:32:05,317 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:05,321 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:32:05,438 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:32:05,447 INFO L158 Benchmark]: Toolchain (without parser) took 8536.63ms. Allocated memory was 98.6MB in the beginning and 157.3MB in the end (delta: 58.7MB). Free memory was 67.9MB in the beginning and 48.9MB in the end (delta: 19.0MB). Peak memory consumption was 76.7MB. Max. memory is 16.1GB. [2021-11-13 18:32:05,448 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:32:05,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.43ms. Allocated memory is still 98.6MB. Free memory was 67.6MB in the beginning and 65.9MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:32:05,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.26ms. Allocated memory is still 98.6MB. Free memory was 65.9MB in the beginning and 63.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:32:05,449 INFO L158 Benchmark]: Boogie Preprocessor took 40.50ms. Allocated memory is still 98.6MB. Free memory was 63.2MB in the beginning and 61.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:32:05,450 INFO L158 Benchmark]: RCFGBuilder took 1045.47ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 61.4MB in the beginning and 84.4MB in the end (delta: -23.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-11-13 18:32:05,450 INFO L158 Benchmark]: TraceAbstraction took 6737.31ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 84.4MB in the beginning and 48.9MB in the end (delta: 35.6MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2021-11-13 18:32:05,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.43ms. Allocated memory is still 98.6MB. Free memory was 67.6MB in the beginning and 65.9MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.26ms. Allocated memory is still 98.6MB. Free memory was 65.9MB in the beginning and 63.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.50ms. Allocated memory is still 98.6MB. Free memory was 63.2MB in the beginning and 61.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1045.47ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 61.4MB in the beginning and 84.4MB in the end (delta: -23.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6737.31ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 84.4MB in the beginning and 48.9MB in the end (delta: 35.6MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:32:05,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y --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 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:32:08,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:32:08,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:32:08,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:32:08,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:32:08,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:32:08,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:32:08,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:32:08,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:32:08,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:32:08,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:32:08,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:32:08,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:32:08,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:32:08,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:32:08,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:32:08,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:32:08,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:32:08,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:32:08,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:32:08,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:32:08,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:32:08,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:32:08,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:32:08,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:32:08,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:32:08,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:32:08,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:32:08,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:32:08,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:32:08,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:32:08,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:32:08,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:32:08,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:32:08,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:32:08,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:32:08,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:32:08,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:32:08,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:32:08,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:32:08,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:32:08,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:32:08,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:32:08,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:32:08,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:32:08,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:32:08,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:32:08,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:32:08,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:32:08,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:32:08,688 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:32:08,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:32:08,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:32:08,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:32:08,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:32:08,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:32:08,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:32:08,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:32:08,691 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:32:08,691 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:32:08,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:32:08,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:32:08,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:32:08,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:32:08,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:32:08,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:32:08,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:32:08,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:32:08,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:32:08,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:32:08,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:32:08,694 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:32:08,694 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:32:08,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:32:08,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:32:08,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:32:08,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:32:08,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:32:08,696 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6014a53bc4531229002927c7dae6ceb41eaf1bcae6bbbe475b6c1299f7673d0b [2021-11-13 18:32:09,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:32:09,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:32:09,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:32:09,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:32:09,187 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:32:09,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-11-13 18:32:09,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/5297c2a37/6027be53618d4360a8ef07ef9c96df0e/FLAGefa7f37b8 [2021-11-13 18:32:10,077 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:32:10,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-11-13 18:32:10,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/5297c2a37/6027be53618d4360a8ef07ef9c96df0e/FLAGefa7f37b8 [2021-11-13 18:32:10,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/data/5297c2a37/6027be53618d4360a8ef07ef9c96df0e [2021-11-13 18:32:10,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:32:10,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:32:10,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:32:10,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:32:10,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:32:10,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:10,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b3f4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10, skipping insertion in model container [2021-11-13 18:32:10,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:10,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:32:10,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:32:10,663 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-11-13 18:32:10,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:32:10,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:32:10,856 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[5104,5117] [2021-11-13 18:32:10,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:32:10,949 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:32:10,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10 WrapperNode [2021-11-13 18:32:10,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:32:10,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:32:10,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:32:10,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:32:10,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:10,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:32:11,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:32:11,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:32:11,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:32:11,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:32:11,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:32:11,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:32:11,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:32:11,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (1/1) ... [2021-11-13 18:32:11,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:32:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:11,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:32:11,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:32:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:32:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-13 18:32:11,193 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-13 18:32:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-13 18:32:11,193 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-13 18:32:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-13 18:32:11,196 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-13 18:32:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-13 18:32:11,196 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-13 18:32:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:32:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-13 18:32:11,198 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-13 18:32:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:32:11,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:32:14,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:32:14,028 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:32:14,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:32:14 BoogieIcfgContainer [2021-11-13 18:32:14,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:32:14,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:32:14,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:32:14,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:32:14,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:32:10" (1/3) ... [2021-11-13 18:32:14,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209f04df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:32:14, skipping insertion in model container [2021-11-13 18:32:14,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:32:10" (2/3) ... [2021-11-13 18:32:14,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209f04df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:32:14, skipping insertion in model container [2021-11-13 18:32:14,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:32:14" (3/3) ... [2021-11-13 18:32:14,040 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-11-13 18:32:14,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:32:14,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:32:14,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:32:14,109 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:32:14,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:32:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 69 states have internal predecessors, (88), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 18:32:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:32:14,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:14,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:14,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash -868702973, now seen corresponding path program 1 times [2021-11-13 18:32:14,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:14,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896711328] [2021-11-13 18:32:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:14,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:14,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:14,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:14,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:32:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:14,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:32:14,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:14,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:14,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:14,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896711328] [2021-11-13 18:32:14,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896711328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:14,672 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:14,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:32:14,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937901337] [2021-11-13 18:32:14,676 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:14,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:32:14,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:32:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:32:14,722 INFO L87 Difference]: Start difference. First operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 69 states have internal predecessors, (88), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:14,759 INFO L93 Difference]: Finished difference Result 148 states and 203 transitions. [2021-11-13 18:32:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:32:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 18:32:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:14,773 INFO L225 Difference]: With dead ends: 148 [2021-11-13 18:32:14,773 INFO L226 Difference]: Without dead ends: 69 [2021-11-13 18:32:14,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:32:14,782 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:14,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:32:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-13 18:32:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-13 18:32:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 61 states have internal predecessors, (74), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-13 18:32:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2021-11-13 18:32:14,836 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 19 [2021-11-13 18:32:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:14,836 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2021-11-13 18:32:14,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2021-11-13 18:32:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:32:14,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:14,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:14,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:15,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:15,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:15,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 94087050, now seen corresponding path program 1 times [2021-11-13 18:32:15,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:15,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009367061] [2021-11-13 18:32:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:15,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:15,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:15,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:15,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:32:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:15,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:32:15,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:15,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:15,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:15,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009367061] [2021-11-13 18:32:15,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009367061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:15,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:15,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:32:15,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294657123] [2021-11-13 18:32:15,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:15,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:32:15,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:15,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:32:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:32:15,505 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:15,549 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2021-11-13 18:32:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:32:15,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 18:32:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:15,555 INFO L225 Difference]: With dead ends: 100 [2021-11-13 18:32:15,556 INFO L226 Difference]: Without dead ends: 60 [2021-11-13 18:32:15,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:32:15,562 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 17 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:15,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.71ms Time] [2021-11-13 18:32:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-13 18:32:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-13 18:32:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.34) internal successors, (67), 55 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 18:32:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-13 18:32:15,580 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 20 [2021-11-13 18:32:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:15,581 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-13 18:32:15,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-13 18:32:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:32:15,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:15,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:15,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:15,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:15,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1425970454, now seen corresponding path program 1 times [2021-11-13 18:32:15,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:15,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504831252] [2021-11-13 18:32:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:15,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:15,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:15,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:15,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:32:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:32:16,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:16,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:16,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:16,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504831252] [2021-11-13 18:32:16,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504831252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:16,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:16,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:32:16,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145210328] [2021-11-13 18:32:16,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:16,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:32:16,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:32:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:32:16,255 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:16,378 INFO L93 Difference]: Finished difference Result 200 states and 265 transitions. [2021-11-13 18:32:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:32:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-13 18:32:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:16,389 INFO L225 Difference]: With dead ends: 200 [2021-11-13 18:32:16,390 INFO L226 Difference]: Without dead ends: 147 [2021-11-13 18:32:16,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:32:16,398 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 162 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.82ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:16,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 195 Invalid, 26 Unknown, 0 Unchecked, 7.82ms Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 63.57ms Time] [2021-11-13 18:32:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-13 18:32:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2021-11-13 18:32:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 112 states have (on average 1.375) internal successors, (154), 123 states have internal predecessors, (154), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-13 18:32:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2021-11-13 18:32:16,457 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 24 [2021-11-13 18:32:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:16,459 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2021-11-13 18:32:16,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2021-11-13 18:32:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 18:32:16,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:16,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:16,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:16,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:16,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1915412127, now seen corresponding path program 1 times [2021-11-13 18:32:16,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:16,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755762747] [2021-11-13 18:32:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:16,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:16,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:16,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:32:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:32:16,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:17,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:17,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:17,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755762747] [2021-11-13 18:32:17,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755762747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:17,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:17,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:32:17,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542708840] [2021-11-13 18:32:17,190 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:17,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:32:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:32:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:32:17,192 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:17,410 INFO L93 Difference]: Finished difference Result 511 states and 729 transitions. [2021-11-13 18:32:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:32:17,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-13 18:32:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:17,417 INFO L225 Difference]: With dead ends: 511 [2021-11-13 18:32:17,417 INFO L226 Difference]: Without dead ends: 381 [2021-11-13 18:32:17,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:32:17,421 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 105 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:17,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 490 Invalid, 85 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 121.28ms Time] [2021-11-13 18:32:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-13 18:32:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 366. [2021-11-13 18:32:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 299 states have (on average 1.3444816053511706) internal successors, (402), 327 states have internal predecessors, (402), 36 states have call successors, (36), 30 states have call predecessors, (36), 30 states have return successors, (56), 30 states have call predecessors, (56), 36 states have call successors, (56) [2021-11-13 18:32:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 494 transitions. [2021-11-13 18:32:17,510 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 494 transitions. Word has length 28 [2021-11-13 18:32:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:17,511 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 494 transitions. [2021-11-13 18:32:17,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 494 transitions. [2021-11-13 18:32:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 18:32:17,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:17,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:17,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:17,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:17,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1184758052, now seen corresponding path program 1 times [2021-11-13 18:32:17,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:17,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228729580] [2021-11-13 18:32:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:17,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:17,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:17,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:32:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:17,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:32:17,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:17,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:18,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:18,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228729580] [2021-11-13 18:32:18,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228729580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:18,086 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:18,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:32:18,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535701801] [2021-11-13 18:32:18,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:18,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:32:18,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:32:18,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:32:18,088 INFO L87 Difference]: Start difference. First operand 366 states and 494 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:18,206 INFO L93 Difference]: Finished difference Result 897 states and 1249 transitions. [2021-11-13 18:32:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:32:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-13 18:32:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:18,219 INFO L225 Difference]: With dead ends: 897 [2021-11-13 18:32:18,219 INFO L226 Difference]: Without dead ends: 538 [2021-11-13 18:32:18,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:32:18,224 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 63 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:18,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 122 Invalid, 14 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 51.32ms Time] [2021-11-13 18:32:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-13 18:32:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2021-11-13 18:32:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 435 states have (on average 1.303448275862069) internal successors, (567), 471 states have internal predecessors, (567), 50 states have call successors, (50), 50 states have call predecessors, (50), 50 states have return successors, (95), 50 states have call predecessors, (95), 50 states have call successors, (95) [2021-11-13 18:32:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 712 transitions. [2021-11-13 18:32:18,305 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 712 transitions. Word has length 30 [2021-11-13 18:32:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:18,305 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 712 transitions. [2021-11-13 18:32:18,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 712 transitions. [2021-11-13 18:32:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:32:18,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:18,310 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:32:18,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:18,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:18,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash -445917596, now seen corresponding path program 1 times [2021-11-13 18:32:18,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:18,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634670577] [2021-11-13 18:32:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:18,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:18,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:18,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:18,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:32:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:18,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:32:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:32:19,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:19,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:19,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634670577] [2021-11-13 18:32:19,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634670577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:32:19,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:32:19,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-11-13 18:32:19,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825353597] [2021-11-13 18:32:19,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:32:19,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:32:19,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:32:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:32:19,546 INFO L87 Difference]: Start difference. First operand 536 states and 712 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 10 states have internal predecessors, (79), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:32:20,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:22,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:24,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:25,613 INFO L93 Difference]: Finished difference Result 2083 states and 2842 transitions. [2021-11-13 18:32:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:32:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 10 states have internal predecessors, (79), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 53 [2021-11-13 18:32:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:25,630 INFO L225 Difference]: With dead ends: 2083 [2021-11-13 18:32:25,630 INFO L226 Difference]: Without dead ends: 1715 [2021-11-13 18:32:25,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:32:25,636 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 846 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5421.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.77ms SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5565.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:25,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 1011 Invalid, 561 Unknown, 0 Unchecked, 16.77ms Time], IncrementalHoareTripleChecker [189 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 5565.31ms Time] [2021-11-13 18:32:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-11-13 18:32:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1677. [2021-11-13 18:32:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1381 states have (on average 1.278059377262853) internal successors, (1765), 1508 states have internal predecessors, (1765), 141 states have call successors, (141), 129 states have call predecessors, (141), 154 states have return successors, (267), 133 states have call predecessors, (267), 141 states have call successors, (267) [2021-11-13 18:32:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2173 transitions. [2021-11-13 18:32:25,828 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2173 transitions. Word has length 53 [2021-11-13 18:32:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:25,829 INFO L470 AbstractCegarLoop]: Abstraction has 1677 states and 2173 transitions. [2021-11-13 18:32:25,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 10 states have internal predecessors, (79), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:32:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2173 transitions. [2021-11-13 18:32:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:32:25,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:25,832 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:32:25,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:26,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:26,046 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1587326383, now seen corresponding path program 1 times [2021-11-13 18:32:26,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:26,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270701687] [2021-11-13 18:32:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:26,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:26,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:32:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:26,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:32:26,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:32:26,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:32:26,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:26,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270701687] [2021-11-13 18:32:26,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270701687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:26,586 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:26,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:32:26,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719149143] [2021-11-13 18:32:26,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:26,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:26,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:26,589 INFO L87 Difference]: Start difference. First operand 1677 states and 2173 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:32:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:26,839 INFO L93 Difference]: Finished difference Result 3709 states and 4872 transitions. [2021-11-13 18:32:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:32:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2021-11-13 18:32:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:26,859 INFO L225 Difference]: With dead ends: 3709 [2021-11-13 18:32:26,859 INFO L226 Difference]: Without dead ends: 2039 [2021-11-13 18:32:26,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:32:26,872 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 61 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:26,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 434 Invalid, 19 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 23.21ms Time] [2021-11-13 18:32:26,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-11-13 18:32:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1695. [2021-11-13 18:32:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1397 states have (on average 1.2677165354330708) internal successors, (1771), 1524 states have internal predecessors, (1771), 141 states have call successors, (141), 129 states have call predecessors, (141), 156 states have return successors, (269), 133 states have call predecessors, (269), 141 states have call successors, (269) [2021-11-13 18:32:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2181 transitions. [2021-11-13 18:32:27,090 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2181 transitions. Word has length 61 [2021-11-13 18:32:27,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:27,091 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2181 transitions. [2021-11-13 18:32:27,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:32:27,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2181 transitions. [2021-11-13 18:32:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:32:27,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:27,095 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:32:27,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:27,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:27,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1335833615, now seen corresponding path program 1 times [2021-11-13 18:32:27,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:27,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76185208] [2021-11-13 18:32:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:27,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:27,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:27,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:27,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:32:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:27,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:32:27,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:32:27,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:32:27,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:27,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76185208] [2021-11-13 18:32:27,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76185208] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:27,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:27,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 18:32:27,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45029689] [2021-11-13 18:32:27,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:27,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:32:27,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:32:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:32:27,846 INFO L87 Difference]: Start difference. First operand 1695 states and 2181 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:32:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:28,087 INFO L93 Difference]: Finished difference Result 3409 states and 4511 transitions. [2021-11-13 18:32:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:32:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2021-11-13 18:32:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:28,103 INFO L225 Difference]: With dead ends: 3409 [2021-11-13 18:32:28,103 INFO L226 Difference]: Without dead ends: 1721 [2021-11-13 18:32:28,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:32:28,114 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 45 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:28,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 317 Invalid, 17 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 25.09ms Time] [2021-11-13 18:32:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-11-13 18:32:28,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1539. [2021-11-13 18:32:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1259 states have (on average 1.254964257347101) internal successors, (1580), 1356 states have internal predecessors, (1580), 135 states have call successors, (135), 123 states have call predecessors, (135), 144 states have return successors, (231), 129 states have call predecessors, (231), 135 states have call successors, (231) [2021-11-13 18:32:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1946 transitions. [2021-11-13 18:32:28,296 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1946 transitions. Word has length 61 [2021-11-13 18:32:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:28,297 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1946 transitions. [2021-11-13 18:32:28,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:32:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1946 transitions. [2021-11-13 18:32:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 18:32:28,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:28,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:28,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:28,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:28,515 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1768689849, now seen corresponding path program 1 times [2021-11-13 18:32:28,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:28,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466835348] [2021-11-13 18:32:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:28,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:28,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:28,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:32:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:28,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 18:32:28,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:32:29,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:32:29,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:29,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466835348] [2021-11-13 18:32:29,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466835348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:32:29,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:32:29,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-11-13 18:32:29,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832592835] [2021-11-13 18:32:29,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:32:29,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:32:29,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:32:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:32:29,631 INFO L87 Difference]: Start difference. First operand 1539 states and 1946 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 4 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:32:31,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:32,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:34,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:36,236 INFO L93 Difference]: Finished difference Result 4083 states and 5323 transitions. [2021-11-13 18:32:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-13 18:32:36,237 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 4 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2021-11-13 18:32:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:36,280 INFO L225 Difference]: With dead ends: 4083 [2021-11-13 18:32:36,280 INFO L226 Difference]: Without dead ends: 2654 [2021-11-13 18:32:36,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 18:32:36,292 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 704 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5560.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.47ms SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5725.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:36,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 1015 Invalid, 807 Unknown, 0 Unchecked, 17.47ms Time], IncrementalHoareTripleChecker [212 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 5725.00ms Time] [2021-11-13 18:32:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2021-11-13 18:32:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2466. [2021-11-13 18:32:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2004 states have (on average 1.2470059880239521) internal successors, (2499), 2148 states have internal predecessors, (2499), 223 states have call successors, (223), 209 states have call predecessors, (223), 238 states have return successors, (412), 215 states have call predecessors, (412), 223 states have call successors, (412) [2021-11-13 18:32:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3134 transitions. [2021-11-13 18:32:36,627 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3134 transitions. Word has length 65 [2021-11-13 18:32:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:36,628 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3134 transitions. [2021-11-13 18:32:36,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 4 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:32:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3134 transitions. [2021-11-13 18:32:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 18:32:36,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:36,632 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:36,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:36,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:36,852 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1906131592, now seen corresponding path program 2 times [2021-11-13 18:32:36,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:36,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327238042] [2021-11-13 18:32:36,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:32:36,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:36,857 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:32:38,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:32:38,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-13 18:32:38,343 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:32:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:32:40,209 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:32:40,210 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:32:40,211 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:32:40,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:40,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:40,438 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:40,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:32:40,539 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:32:40,547 INFO L158 Benchmark]: Toolchain (without parser) took 30233.55ms. Allocated memory was 58.7MB in the beginning and 151.0MB in the end (delta: 92.3MB). Free memory was 35.7MB in the beginning and 51.4MB in the end (delta: -15.7MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. [2021-11-13 18:32:40,548 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 39.8MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:32:40,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.93ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.6MB in the beginning and 46.1MB in the end (delta: -10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:32:40,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.78ms. Allocated memory is still 71.3MB. Free memory was 45.9MB in the beginning and 43.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:32:40,551 INFO L158 Benchmark]: Boogie Preprocessor took 61.83ms. Allocated memory is still 71.3MB. Free memory was 43.4MB in the beginning and 41.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:32:40,551 INFO L158 Benchmark]: RCFGBuilder took 2940.51ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 46.1MB in the end (delta: -4.7MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-13 18:32:40,552 INFO L158 Benchmark]: TraceAbstraction took 26514.02ms. Allocated memory was 71.3MB in the beginning and 151.0MB in the end (delta: 79.7MB). Free memory was 45.7MB in the beginning and 51.4MB in the end (delta: -5.7MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. [2021-11-13 18:32:40,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 39.8MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.93ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.6MB in the beginning and 46.1MB in the end (delta: -10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.78ms. Allocated memory is still 71.3MB. Free memory was 45.9MB in the beginning and 43.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.83ms. Allocated memory is still 71.3MB. Free memory was 43.4MB in the beginning and 41.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2940.51ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 46.1MB in the end (delta: -4.7MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * TraceAbstraction took 26514.02ms. Allocated memory was 71.3MB in the beginning and 151.0MB in the end (delta: 79.7MB). Free memory was 45.7MB in the beginning and 51.4MB in the end (delta: -5.7MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:32:40,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_277b4708-2449-4b94-9dca-5412e2d4faad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null