./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU --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 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:56:49,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:56:49,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:56:49,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:56:49,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:56:49,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:56:49,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:56:49,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:56:49,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:56:49,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:56:49,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:56:49,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:56:49,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:56:49,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:56:49,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:56:49,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:56:49,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:56:49,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:56:49,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:56:49,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:56:49,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:56:49,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:56:49,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:56:49,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:56:49,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:56:49,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:56:49,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:56:49,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:56:49,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:56:49,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:56:49,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:56:49,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:56:49,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:56:49,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:56:49,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:56:49,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:56:49,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:56:49,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:56:49,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:56:49,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:56:49,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:56:49,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:56:49,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:56:49,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:56:49,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:56:49,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:56:49,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:56:49,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:56:49,506 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:56:49,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:56:49,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:56:49,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:56:49,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:56:49,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:56:49,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:56:49,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:56:49,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:56:49,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:56:49,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:56:49,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:56:49,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:56:49,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:56:49,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:56:49,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:56:49,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:56:49,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:56:49,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:56:49,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:56:49,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:56:49,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:56:49,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:56:49,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:56:49,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:56:49,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:56:49,515 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_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be [2021-11-02 22:56:49,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:56:49,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:56:49,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:56:49,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:56:49,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:56:49,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-11-02 22:56:49,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/data/d8995d87c/d97e73036c2b49fca019fbfceab122f1/FLAGcf717f7d4 [2021-11-02 22:56:50,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:56:50,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-11-02 22:56:50,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/data/d8995d87c/d97e73036c2b49fca019fbfceab122f1/FLAGcf717f7d4 [2021-11-02 22:56:50,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/data/d8995d87c/d97e73036c2b49fca019fbfceab122f1 [2021-11-02 22:56:50,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:56:50,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:56:50,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:56:50,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:56:50,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:56:50,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:56:50" (1/1) ... [2021-11-02 22:56:50,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b84dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:50, skipping insertion in model container [2021-11-02 22:56:50,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:56:50" (1/1) ... [2021-11-02 22:56:50,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:56:50,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:56:51,067 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_1d59271c-396e-48be-a7e1-fac51cb217e2/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2021-11-02 22:56:51,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:56:51,140 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:56:51,170 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_1d59271c-396e-48be-a7e1-fac51cb217e2/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2021-11-02 22:56:51,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:56:51,256 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:56:51,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51 WrapperNode [2021-11-02 22:56:51,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:56:51,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:56:51,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:56:51,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:56:51,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:56:51,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:56:51,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:56:51,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:56:51,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:56:51,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:56:51,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:56:51,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:56:51,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (1/1) ... [2021-11-02 22:56:51,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:56:51,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:51,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:56:51,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:56:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:56:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:56:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:56:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:56:52,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:56:52,688 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-11-02 22:56:52,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:52 BoogieIcfgContainer [2021-11-02 22:56:52,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:56:52,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:56:52,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:56:52,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:56:52,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:56:50" (1/3) ... [2021-11-02 22:56:52,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7d68ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:56:52, skipping insertion in model container [2021-11-02 22:56:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:51" (2/3) ... [2021-11-02 22:56:52,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7d68ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:56:52, skipping insertion in model container [2021-11-02 22:56:52,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:52" (3/3) ... [2021-11-02 22:56:52,704 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2021-11-02 22:56:52,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:56:52,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 22:56:52,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:56:52,788 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 [2021-11-02 22:56:52,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 22:56:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:56:52,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:52,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:52,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:52,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1800894747, now seen corresponding path program 1 times [2021-11-02 22:56:52,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:52,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289858061] [2021-11-02 22:56:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:52,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:53,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:53,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289858061] [2021-11-02 22:56:53,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289858061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:53,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:53,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:56:53,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725729599] [2021-11-02 22:56:53,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:56:53,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:56:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:56:53,169 INFO L87 Difference]: Start difference. First operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:53,198 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2021-11-02 22:56:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:56:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-02 22:56:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:53,210 INFO L225 Difference]: With dead ends: 228 [2021-11-02 22:56:53,210 INFO L226 Difference]: Without dead ends: 113 [2021-11-02 22:56:53,213 INFO L786 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 [2021-11-02 22:56:53,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-02 22:56:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-02 22:56:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.5) internal successors, (165), 112 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-11-02 22:56:53,255 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2021-11-02 22:56:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:53,255 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-11-02 22:56:53,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-11-02 22:56:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:56:53,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:53,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:53,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:56:53,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1447315652, now seen corresponding path program 1 times [2021-11-02 22:56:53,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:53,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910294726] [2021-11-02 22:56:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:53,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:53,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:53,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910294726] [2021-11-02 22:56:53,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910294726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:53,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:53,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:56:53,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107909880] [2021-11-02 22:56:53,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:56:53,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:56:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:53,399 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:53,420 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2021-11-02 22:56:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-02 22:56:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:53,422 INFO L225 Difference]: With dead ends: 113 [2021-11-02 22:56:53,422 INFO L226 Difference]: Without dead ends: 47 [2021-11-02 22:56:53,423 INFO L786 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 [2021-11-02 22:56:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-02 22:56:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-02 22:56:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-11-02 22:56:53,429 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-11-02 22:56:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:53,429 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-11-02 22:56:53,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-11-02 22:56:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:56:53,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:53,431 INFO L513 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] [2021-11-02 22:56:53,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:56:53,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash -230586389, now seen corresponding path program 1 times [2021-11-02 22:56:53,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:53,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145780633] [2021-11-02 22:56:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:53,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:53,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:53,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145780633] [2021-11-02 22:56:53,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145780633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:53,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:53,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:56:53,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929437242] [2021-11-02 22:56:53,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:53,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:53,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:53,611 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:53,690 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2021-11-02 22:56:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-02 22:56:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:53,694 INFO L225 Difference]: With dead ends: 88 [2021-11-02 22:56:53,694 INFO L226 Difference]: Without dead ends: 47 [2021-11-02 22:56:53,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:56:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-02 22:56:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-02 22:56:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2021-11-02 22:56:53,707 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2021-11-02 22:56:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:53,708 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2021-11-02 22:56:53,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2021-11-02 22:56:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:56:53,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:53,710 INFO L513 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] [2021-11-02 22:56:53,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:56:53,710 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash -108421843, now seen corresponding path program 1 times [2021-11-02 22:56:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:53,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839067075] [2021-11-02 22:56:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:53,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:53,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:53,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839067075] [2021-11-02 22:56:53,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839067075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:53,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:53,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:56:53,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429878200] [2021-11-02 22:56:53,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:56:53,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:56:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:53,816 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:53,862 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2021-11-02 22:56:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:53,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-02 22:56:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:53,866 INFO L225 Difference]: With dead ends: 109 [2021-11-02 22:56:53,866 INFO L226 Difference]: Without dead ends: 68 [2021-11-02 22:56:53,868 INFO L786 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 [2021-11-02 22:56:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-02 22:56:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-11-02 22:56:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2021-11-02 22:56:53,882 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2021-11-02 22:56:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:53,883 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2021-11-02 22:56:53,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2021-11-02 22:56:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 22:56:53,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:53,885 INFO L513 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] [2021-11-02 22:56:53,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:56:53,885 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1619186466, now seen corresponding path program 1 times [2021-11-02 22:56:53,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:53,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180100076] [2021-11-02 22:56:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:53,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:54,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:54,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180100076] [2021-11-02 22:56:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180100076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:54,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:54,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:56:54,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995366228] [2021-11-02 22:56:54,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:54,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:54,006 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:54,079 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2021-11-02 22:56:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:56:54,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-02 22:56:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:54,082 INFO L225 Difference]: With dead ends: 175 [2021-11-02 22:56:54,082 INFO L226 Difference]: Without dead ends: 115 [2021-11-02 22:56:54,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:56:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-02 22:56:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2021-11-02 22:56:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2021-11-02 22:56:54,105 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2021-11-02 22:56:54,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:54,106 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2021-11-02 22:56:54,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2021-11-02 22:56:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 22:56:54,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:54,114 INFO L513 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] [2021-11-02 22:56:54,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:56:54,114 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1043324577, now seen corresponding path program 1 times [2021-11-02 22:56:54,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:54,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062113657] [2021-11-02 22:56:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:54,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:54,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:54,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062113657] [2021-11-02 22:56:54,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062113657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:54,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:54,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:56:54,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619156498] [2021-11-02 22:56:54,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:54,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:54,220 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:54,303 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2021-11-02 22:56:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:56:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-02 22:56:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:54,308 INFO L225 Difference]: With dead ends: 382 [2021-11-02 22:56:54,308 INFO L226 Difference]: Without dead ends: 316 [2021-11-02 22:56:54,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:56:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-02 22:56:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2021-11-02 22:56:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.381679389312977) internal successors, (181), 131 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2021-11-02 22:56:54,344 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2021-11-02 22:56:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:54,345 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2021-11-02 22:56:54,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2021-11-02 22:56:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:56:54,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:54,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:54,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:56:54,349 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1715093079, now seen corresponding path program 1 times [2021-11-02 22:56:54,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:54,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14001710] [2021-11-02 22:56:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:54,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:54,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:54,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14001710] [2021-11-02 22:56:54,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14001710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:54,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:54,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:56:54,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589968203] [2021-11-02 22:56:54,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:54,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:54,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:54,441 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:54,569 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2021-11-02 22:56:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:56:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-02 22:56:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:54,575 INFO L225 Difference]: With dead ends: 378 [2021-11-02 22:56:54,575 INFO L226 Difference]: Without dead ends: 376 [2021-11-02 22:56:54,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:56:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-02 22:56:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2021-11-02 22:56:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 131 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2021-11-02 22:56:54,606 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2021-11-02 22:56:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:54,606 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2021-11-02 22:56:54,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2021-11-02 22:56:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:56:54,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:54,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:54,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:56:54,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1340444974, now seen corresponding path program 1 times [2021-11-02 22:56:54,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:54,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466860785] [2021-11-02 22:56:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:54,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:54,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:54,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466860785] [2021-11-02 22:56:54,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466860785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:54,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:54,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:56:54,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383454149] [2021-11-02 22:56:54,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:56:54,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:56:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:56:54,678 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:54,770 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2021-11-02 22:56:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:56:54,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-02 22:56:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:54,773 INFO L225 Difference]: With dead ends: 354 [2021-11-02 22:56:54,773 INFO L226 Difference]: Without dead ends: 228 [2021-11-02 22:56:54,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:56:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-02 22:56:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2021-11-02 22:56:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 139 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2021-11-02 22:56:54,790 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2021-11-02 22:56:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:54,791 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2021-11-02 22:56:54,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2021-11-02 22:56:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:56:54,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:54,795 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:54,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:56:54,796 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1082279536, now seen corresponding path program 1 times [2021-11-02 22:56:54,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:54,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772153936] [2021-11-02 22:56:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:54,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:54,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:54,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772153936] [2021-11-02 22:56:54,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772153936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:54,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:54,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:56:54,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035488721] [2021-11-02 22:56:54,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:56:54,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:56:54,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:54,869 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:54,918 INFO L93 Difference]: Finished difference Result 324 states and 434 transitions. [2021-11-02 22:56:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:54,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-02 22:56:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:54,920 INFO L225 Difference]: With dead ends: 324 [2021-11-02 22:56:54,921 INFO L226 Difference]: Without dead ends: 190 [2021-11-02 22:56:54,921 INFO L786 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 [2021-11-02 22:56:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-02 22:56:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-02 22:56:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.312169312169312) internal successors, (248), 189 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2021-11-02 22:56:54,943 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2021-11-02 22:56:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:54,943 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2021-11-02 22:56:54,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2021-11-02 22:56:54,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:56:54,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:54,945 INFO L513 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] [2021-11-02 22:56:54,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:56:54,945 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:56:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1099927890, now seen corresponding path program 1 times [2021-11-02 22:56:54,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:54,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643774083] [2021-11-02 22:56:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:54,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:56:55,027 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:56:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:56:55,153 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:56:55,153 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:56:55,154 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:56:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:56:55,157 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:56:55,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:56:55,161 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:55,166 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:56:55,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:56:55 BoogieIcfgContainer [2021-11-02 22:56:55,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:56:55,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:56:55,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:56:55,291 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:56:55,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:52" (3/4) ... [2021-11-02 22:56:55,294 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-02 22:56:55,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:56:55,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:56:55,419 INFO L168 Benchmark]: Toolchain (without parser) took 4718.11 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.6 MB in the beginning and 39.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,419 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 76.0 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:56:55,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.73 ms. Allocated memory is still 100.7 MB. Free memory was 58.4 MB in the beginning and 65.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.97 ms. Allocated memory is still 100.7 MB. Free memory was 65.4 MB in the beginning and 61.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,421 INFO L168 Benchmark]: Boogie Preprocessor took 85.86 ms. Allocated memory is still 100.7 MB. Free memory was 61.7 MB in the beginning and 59.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,421 INFO L168 Benchmark]: RCFGBuilder took 1246.78 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 59.0 MB in the beginning and 79.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,422 INFO L168 Benchmark]: TraceAbstraction took 2595.40 ms. Allocated memory is still 121.6 MB. Free memory was 78.2 MB in the beginning and 52.4 MB in the end (delta: 25.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,422 INFO L168 Benchmark]: Witness Printer took 126.06 ms. Allocated memory is still 121.6 MB. Free memory was 52.4 MB in the beginning and 39.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:56:55,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 76.0 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.73 ms. Allocated memory is still 100.7 MB. Free memory was 58.4 MB in the beginning and 65.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.97 ms. Allocated memory is still 100.7 MB. Free memory was 65.4 MB in the beginning and 61.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.86 ms. Allocated memory is still 100.7 MB. Free memory was 61.7 MB in the beginning and 59.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1246.78 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 59.0 MB in the beginning and 79.0 MB in the end (delta: -19.9 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2595.40 ms. Allocated memory is still 121.6 MB. Free memory was 78.2 MB in the beginning and 52.4 MB in the end (delta: 25.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Witness Printer took 126.06 ms. Allocated memory is still 121.6 MB. Free memory was 52.4 MB in the beginning and 39.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 398]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L189] int cleanupTimeShifts = 4; [L405] int pumpRunning = 0; [L406] int systemActive = 1; [L779] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L268] int retValue_acc ; [L269] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L317] int retValue_acc ; [L320] retValue_acc = 1 [L321] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L275] tmp = valid_product() [L277] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L328] int splverifierCounter ; [L329] int tmp ; [L330] int tmp___0 ; [L331] int tmp___1 ; [L332] int tmp___2 ; [L335] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L339] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L345] tmp = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L355] tmp___0 = __VERIFIER_nondet_int() [L357] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L116] COND FALSE !(\read(methaneLevelCritical)) [L119] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L365] tmp___2 = __VERIFIER_nondet_int() [L367] COND TRUE \read(tmp___2) [L605] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L412] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L419] COND TRUE \read(systemActive) [L467] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L470] COND FALSE !(\read(pumpRunning)) [L441] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L444] COND TRUE ! pumpRunning [L564] int retValue_acc ; [L565] int tmp ; [L566] int tmp___0 ; [L166] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L169] COND FALSE !(waterLevel < 2) [L173] retValue_acc = 0 [L174] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] tmp = isHighWaterSensorDry() [L572] COND FALSE !(\read(tmp)) [L575] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L577] retValue_acc = tmp___0 [L578] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L446] tmp = isHighWaterLevel() [L448] COND TRUE \read(tmp) [L495] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = isMethaneLevelCritical() [L61] COND TRUE \read(tmp) [L519] int retValue_acc ; [L522] retValue_acc = pumpRunning [L523] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L398] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 398]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 398]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1232 SDslu, 1058 SDs, 0 SdLazy, 146 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=9, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 561 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-02 22:56:55,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d59271c-396e-48be-a7e1-fac51cb217e2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE