./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-017.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_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/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_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-017.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/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_894829d4-1655-4f69-a824-e7edc15cc73d/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 abc14d3fa77291bf7b4e9307daeaea6bb91cb09e8e382d2384b1151d18b28e95 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:37:01,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:37:01,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:37:01,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:37:01,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:37:01,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:37:01,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:37:01,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:37:01,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:37:01,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:37:01,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:37:01,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:37:01,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:37:01,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:37:01,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:37:01,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:37:01,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:37:01,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:37:01,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:37:01,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:37:01,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:37:01,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:37:01,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:37:01,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:37:01,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:37:01,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:37:01,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:37:01,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:37:01,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:37:01,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:37:01,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:37:01,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:37:01,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:37:01,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:37:01,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:37:01,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:37:01,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:37:01,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:37:01,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:37:01,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:37:01,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:37:01,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:37:01,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:37:01,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:37:01,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:37:01,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:37:01,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:37:01,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:37:01,503 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:37:01,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:37:01,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:37:01,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:37:01,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:37:01,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:37:01,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:37:01,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:37:01,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:37:01,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:37:01,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:37:01,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:37:01,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:37:01,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:37:01,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:37:01,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:37:01,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:37:01,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:37:01,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:37:01,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:37:01,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:37:01,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:37:01,515 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:37:01,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:37:01,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:37:01,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:37:01,517 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_894829d4-1655-4f69-a824-e7edc15cc73d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abc14d3fa77291bf7b4e9307daeaea6bb91cb09e8e382d2384b1151d18b28e95 [2021-11-02 22:37:01,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:37:01,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:37:01,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:37:01,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:37:01,877 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:37:01,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/xcsp/AllInterval-017.c [2021-11-02 22:37:01,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/data/bdf266385/afdb0eeccea74f94913e5bbb2d3c4daf/FLAG514d89f1f [2021-11-02 22:37:02,649 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:37:02,659 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/sv-benchmarks/c/xcsp/AllInterval-017.c [2021-11-02 22:37:02,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/data/bdf266385/afdb0eeccea74f94913e5bbb2d3c4daf/FLAG514d89f1f [2021-11-02 22:37:02,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/data/bdf266385/afdb0eeccea74f94913e5bbb2d3c4daf [2021-11-02 22:37:02,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:37:02,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:37:02,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:37:02,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:37:02,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:37:02,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:37:02" (1/1) ... [2021-11-02 22:37:02,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452c3d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:02, skipping insertion in model container [2021-11-02 22:37:02,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:37:02" (1/1) ... [2021-11-02 22:37:02,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:37:02,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:37:03,295 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_894829d4-1655-4f69-a824-e7edc15cc73d/sv-benchmarks/c/xcsp/AllInterval-017.c[12516,12529] [2021-11-02 22:37:03,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:37:03,316 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:37:03,394 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_894829d4-1655-4f69-a824-e7edc15cc73d/sv-benchmarks/c/xcsp/AllInterval-017.c[12516,12529] [2021-11-02 22:37:03,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:37:03,415 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:37:03,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03 WrapperNode [2021-11-02 22:37:03,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:37:03,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:37:03,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:37:03,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:37:03,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:37:03,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:37:03,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:37:03,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:37:03,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:37:03,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:37:03,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:37:03,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:37:03,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (1/1) ... [2021-11-02 22:37:03,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:37:03,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:03,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:37:03,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_894829d4-1655-4f69-a824-e7edc15cc73d/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:37:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:37:03,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:37:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:37:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:37:05,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:37:05,820 INFO L299 CfgBuilder]: Removed 680 assume(true) statements. [2021-11-02 22:37:05,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:37:05 BoogieIcfgContainer [2021-11-02 22:37:05,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:37:05,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:37:05,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:37:05,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:37:05,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:37:02" (1/3) ... [2021-11-02 22:37:05,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e77ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:37:05, skipping insertion in model container [2021-11-02 22:37:05,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:37:03" (2/3) ... [2021-11-02 22:37:05,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743e77ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:37:05, skipping insertion in model container [2021-11-02 22:37:05,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:37:05" (3/3) ... [2021-11-02 22:37:05,838 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-017.c [2021-11-02 22:37:05,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:37:05,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:37:05,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:37:05,931 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 22:37:05,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:37:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 714 states, 712 states have (on average 1.4985955056179776) internal successors, (1067), 713 states have internal predecessors, (1067), 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 22:37:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2021-11-02 22:37:06,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:06,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:06,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:37:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:06,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2111150957, now seen corresponding path program 1 times [2021-11-02 22:37:06,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:06,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455870072] [2021-11-02 22:37:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:06,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:06,622 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 22:37:06,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:06,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455870072] [2021-11-02 22:37:06,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455870072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:06,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:06,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:37:06,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106447280] [2021-11-02 22:37:06,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:37:06,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:37:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:37:06,678 INFO L87 Difference]: Start difference. First operand has 714 states, 712 states have (on average 1.4985955056179776) internal successors, (1067), 713 states have internal predecessors, (1067), 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 355.0) internal successors, (710), 2 states have internal predecessors, (710), 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 22:37:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:06,754 INFO L93 Difference]: Finished difference Result 1422 states and 2128 transitions. [2021-11-02 22:37:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:37:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 355.0) internal successors, (710), 2 states have internal predecessors, (710), 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 710 [2021-11-02 22:37:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:06,779 INFO L225 Difference]: With dead ends: 1422 [2021-11-02 22:37:06,779 INFO L226 Difference]: Without dead ends: 711 [2021-11-02 22:37:06,787 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 22:37:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-02 22:37:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-11-02 22:37:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.0225352112676056) internal successors, (726), 710 states have internal predecessors, (726), 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 22:37:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 726 transitions. [2021-11-02 22:37:06,879 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 726 transitions. Word has length 710 [2021-11-02 22:37:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:06,880 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 726 transitions. [2021-11-02 22:37:06,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 355.0) internal successors, (710), 2 states have internal predecessors, (710), 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 22:37:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 726 transitions. [2021-11-02 22:37:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2021-11-02 22:37:06,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:06,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:06,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:37:06,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:37:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash -999214909, now seen corresponding path program 1 times [2021-11-02 22:37:06,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:06,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138772668] [2021-11-02 22:37:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:06,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat