./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:34:39,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:34:39,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:34:39,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:34:39,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:34:39,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:34:39,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:34:39,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:34:39,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:34:39,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:34:39,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:34:39,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:34:39,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:34:39,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:34:39,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:34:39,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:34:39,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:34:39,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:34:39,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:34:39,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:34:39,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:34:39,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:34:39,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:34:39,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:34:39,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:34:39,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:34:39,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:34:39,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:34:39,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:34:39,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:34:39,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:34:39,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:34:39,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:34:39,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:34:40,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:34:40,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:34:40,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:34:40,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:34:40,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:34:40,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:34:40,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:34:40,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:34:40,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:34:40,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:34:40,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:34:40,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:34:40,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:34:40,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:34:40,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:34:40,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:34:40,071 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:34:40,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:34:40,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:34:40,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:34:40,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:34:40,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:34:40,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:34:40,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:34:40,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:34:40,073 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:34:40,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:34:40,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:34:40,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:34:40,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:34:40,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:34:40,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:34:40,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:34:40,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:34:40,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:34:40,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:34:40,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:34:40,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:34:40,077 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:34:40,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:34:40,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:34:40,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:34:40,078 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_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd [2021-11-13 18:34:40,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:34:40,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:34:40,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:34:40,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:34:40,435 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:34:40,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2021-11-13 18:34:40,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/fd8cafa34/bbbfdf38feff46cc9e106ee0ba9897aa/FLAG6e6feb0c3 [2021-11-13 18:34:41,386 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:34:41,387 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2021-11-13 18:34:41,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/fd8cafa34/bbbfdf38feff46cc9e106ee0ba9897aa/FLAG6e6feb0c3 [2021-11-13 18:34:41,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/fd8cafa34/bbbfdf38feff46cc9e106ee0ba9897aa [2021-11-13 18:34:41,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:34:41,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:34:41,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:34:41,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:34:41,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:34:41,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:34:41" (1/1) ... [2021-11-13 18:34:41,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf992ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:41, skipping insertion in model container [2021-11-13 18:34:41,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:34:41" (1/1) ... [2021-11-13 18:34:41,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:34:42,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:34:42,284 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_e7dc1366-c756-483d-af9c-a3147fc86ab1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i[452,465] [2021-11-13 18:34:43,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:34:43,607 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:34:43,621 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_e7dc1366-c756-483d-af9c-a3147fc86ab1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i[452,465] [2021-11-13 18:34:43,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:34:44,189 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:34:44,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44 WrapperNode [2021-11-13 18:34:44,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:34:44,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:34:44,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:34:44,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:34:44,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:34:44,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:34:44,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:34:44,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:34:44,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:34:44,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:34:44,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:34:44,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:34:44,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (1/1) ... [2021-11-13 18:34:44,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:34:44,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:44,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:34:44,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:34:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-11-13 18:34:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-11-13 18:34:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:34:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-11-13 18:34:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:34:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:34:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:34:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:34:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:34:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:34:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-11-13 18:34:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-11-13 18:34:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-11-13 18:34:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:34:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:34:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:34:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:34:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:34:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-11-13 18:34:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-11-13 18:34:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:34:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:34:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:34:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-11-13 18:34:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-11-13 18:34:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-13 18:34:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-13 18:34:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-11-13 18:34:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-11-13 18:34:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:34:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:34:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-11-13 18:34:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-11-13 18:34:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:34:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:34:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:34:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-13 18:34:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-13 18:34:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:34:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:34:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 18:34:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 18:34:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-13 18:34:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-13 18:34:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-13 18:34:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-13 18:34:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:34:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-11-13 18:34:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-11-13 18:34:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-13 18:34:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-13 18:34:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-13 18:34:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-13 18:34:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-13 18:34:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-13 18:34:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-11-13 18:34:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-11-13 18:34:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-11-13 18:34:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-11-13 18:34:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:34:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-11-13 18:34:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-11-13 18:34:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-11-13 18:34:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-11-13 18:34:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2021-11-13 18:34:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2021-11-13 18:34:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:34:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:34:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:34:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:34:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:34:50,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:34:50,202 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 18:34:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:34:50 BoogieIcfgContainer [2021-11-13 18:34:50,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:34:50,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:34:50,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:34:50,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:34:50,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:34:41" (1/3) ... [2021-11-13 18:34:50,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709fbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:34:50, skipping insertion in model container [2021-11-13 18:34:50,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:34:44" (2/3) ... [2021-11-13 18:34:50,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709fbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:34:50, skipping insertion in model container [2021-11-13 18:34:50,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:34:50" (3/3) ... [2021-11-13 18:34:50,217 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_all.i [2021-11-13 18:34:50,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:34:50,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:34:50,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:34:50,323 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:34:50,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:34:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 254 states have internal predecessors, (337), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-13 18:34:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:34:50,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:50,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:50,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash -597438168, now seen corresponding path program 1 times [2021-11-13 18:34:50,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:50,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032471125] [2021-11-13 18:34:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:50,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:34:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:34:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:51,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:51,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032471125] [2021-11-13 18:34:51,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032471125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:51,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:51,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:34:51,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606449960] [2021-11-13 18:34:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:51,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:34:51,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:34:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:34:51,105 INFO L87 Difference]: Start difference. First operand has 358 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 254 states have internal predecessors, (337), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:34:53,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:53,986 INFO L93 Difference]: Finished difference Result 718 states and 1043 transitions. [2021-11-13 18:34:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:34:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-13 18:34:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:54,006 INFO L225 Difference]: With dead ends: 718 [2021-11-13 18:34:54,006 INFO L226 Difference]: Without dead ends: 356 [2021-11-13 18:34:54,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:34:54,039 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 85 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2525.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.24ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2710.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:54,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 692 Invalid, 202 Unknown, 0 Unchecked, 23.24ms Time], IncrementalHoareTripleChecker [82 Valid, 119 Invalid, 1 Unknown, 0 Unchecked, 2710.40ms Time] [2021-11-13 18:34:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-13 18:34:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2021-11-13 18:34:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 241 states have (on average 1.3402489626556016) internal successors, (323), 247 states have internal predecessors, (323), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:34:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 480 transitions. [2021-11-13 18:34:54,208 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 480 transitions. Word has length 24 [2021-11-13 18:34:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:54,209 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 480 transitions. [2021-11-13 18:34:54,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:34:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 480 transitions. [2021-11-13 18:34:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:34:54,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:54,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:54,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:34:54,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1052814430, now seen corresponding path program 1 times [2021-11-13 18:34:54,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:54,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268159266] [2021-11-13 18:34:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:54,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:34:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:34:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:54,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:54,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268159266] [2021-11-13 18:34:54,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268159266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:54,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:54,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:34:54,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070441993] [2021-11-13 18:34:54,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:54,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:34:54,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:54,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:34:54,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:34:54,369 INFO L87 Difference]: Start difference. First operand 348 states and 480 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:34:56,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:57,186 INFO L93 Difference]: Finished difference Result 702 states and 968 transitions. [2021-11-13 18:34:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:34:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-13 18:34:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:57,193 INFO L225 Difference]: With dead ends: 702 [2021-11-13 18:34:57,194 INFO L226 Difference]: Without dead ends: 360 [2021-11-13 18:34:57,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:34:57,199 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 87 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2549.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.98ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2749.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:57,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 1062 Invalid, 286 Unknown, 0 Unchecked, 14.98ms Time], IncrementalHoareTripleChecker [82 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2749.69ms Time] [2021-11-13 18:34:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-13 18:34:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 350. [2021-11-13 18:34:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 243 states have (on average 1.337448559670782) internal successors, (325), 249 states have internal predecessors, (325), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:34:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 482 transitions. [2021-11-13 18:34:57,233 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 482 transitions. Word has length 24 [2021-11-13 18:34:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:57,234 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 482 transitions. [2021-11-13 18:34:57,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:34:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 482 transitions. [2021-11-13 18:34:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 18:34:57,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:57,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:57,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:34:57,236 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash -440898722, now seen corresponding path program 1 times [2021-11-13 18:34:57,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:57,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6010044] [2021-11-13 18:34:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:57,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:34:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:34:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:34:57,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:57,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6010044] [2021-11-13 18:34:57,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6010044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:34:57,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240737513] [2021-11-13 18:34:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:57,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:57,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:57,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:34:57,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:34:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:34:57,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:34:58,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:34:58,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240737513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:34:58,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:34:58,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-13 18:34:58,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935961718] [2021-11-13 18:34:58,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:34:58,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:34:58,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:34:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:34:58,145 INFO L87 Difference]: Start difference. First operand 350 states and 482 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:00,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:01,085 INFO L93 Difference]: Finished difference Result 708 states and 975 transitions. [2021-11-13 18:35:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:35:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-11-13 18:35:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:01,090 INFO L225 Difference]: With dead ends: 708 [2021-11-13 18:35:01,091 INFO L226 Difference]: Without dead ends: 365 [2021-11-13 18:35:01,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:35:01,094 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 257 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2646.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.91ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2865.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:01,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1400 Invalid, 437 Unknown, 0 Unchecked, 15.91ms Time], IncrementalHoareTripleChecker [89 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2865.64ms Time] [2021-11-13 18:35:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-13 18:35:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 356. [2021-11-13 18:35:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 249 states have (on average 1.3293172690763053) internal successors, (331), 255 states have internal predecessors, (331), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:35:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 488 transitions. [2021-11-13 18:35:01,120 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 488 transitions. Word has length 28 [2021-11-13 18:35:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:01,120 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 488 transitions. [2021-11-13 18:35:01,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 488 transitions. [2021-11-13 18:35:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 18:35:01,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:01,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:01,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 18:35:01,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:01,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1521182952, now seen corresponding path program 2 times [2021-11-13 18:35:01,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:01,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810378109] [2021-11-13 18:35:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:01,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:35:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:35:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:01,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:01,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810378109] [2021-11-13 18:35:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810378109] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:35:01,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162322246] [2021-11-13 18:35:01,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:35:01,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:01,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:35:01,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:35:05,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:35:05,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:35:05,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:35:05,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:05,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:06,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162322246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:35:06,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:35:06,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2021-11-13 18:35:06,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329637790] [2021-11-13 18:35:06,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:35:06,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:35:06,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:35:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:35:06,178 INFO L87 Difference]: Start difference. First operand 356 states and 488 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:08,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:09,319 INFO L93 Difference]: Finished difference Result 720 states and 990 transitions. [2021-11-13 18:35:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:35:09,320 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-11-13 18:35:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:09,324 INFO L225 Difference]: With dead ends: 720 [2021-11-13 18:35:09,324 INFO L226 Difference]: Without dead ends: 377 [2021-11-13 18:35:09,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:35:09,328 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 434 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 128 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2823.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.76ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3049.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:09,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1851 Invalid, 680 Unknown, 0 Unchecked, 20.76ms Time], IncrementalHoareTripleChecker [128 Valid, 551 Invalid, 1 Unknown, 0 Unchecked, 3049.03ms Time] [2021-11-13 18:35:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-13 18:35:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2021-11-13 18:35:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 261 states have (on average 1.314176245210728) internal successors, (343), 267 states have internal predecessors, (343), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:35:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 500 transitions. [2021-11-13 18:35:09,354 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 500 transitions. Word has length 34 [2021-11-13 18:35:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:09,354 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 500 transitions. [2021-11-13 18:35:09,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 500 transitions. [2021-11-13 18:35:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:35:09,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:09,357 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:09,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:09,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:09,582 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -569248756, now seen corresponding path program 3 times [2021-11-13 18:35:09,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:09,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535347553] [2021-11-13 18:35:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:09,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:35:10,347 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:35:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:35:10,713 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:35:10,714 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:35:10,715 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:35:10,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:35:10,720 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-11-13 18:35:10,724 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:35:10,783 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:35:10,799 INFO L158 Benchmark]: Toolchain (without parser) took 28907.75ms. Allocated memory was 104.9MB in the beginning and 249.6MB in the end (delta: 144.7MB). Free memory was 73.2MB in the beginning and 65.8MB in the end (delta: 7.4MB). Peak memory consumption was 152.4MB. Max. memory is 16.1GB. [2021-11-13 18:35:10,805 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:35:10,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2297.88ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 72.9MB in the beginning and 59.1MB in the end (delta: 13.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2021-11-13 18:35:10,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 222.80ms. Allocated memory is still 125.8MB. Free memory was 59.1MB in the beginning and 83.5MB in the end (delta: -24.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:35:10,806 INFO L158 Benchmark]: Boogie Preprocessor took 162.55ms. Allocated memory is still 125.8MB. Free memory was 83.5MB in the beginning and 75.8MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:35:10,807 INFO L158 Benchmark]: RCFGBuilder took 5618.64ms. Allocated memory was 125.8MB in the beginning and 207.6MB in the end (delta: 81.8MB). Free memory was 75.8MB in the beginning and 114.4MB in the end (delta: -38.6MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. [2021-11-13 18:35:10,808 INFO L158 Benchmark]: TraceAbstraction took 20589.49ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 114.4MB in the beginning and 65.8MB in the end (delta: 48.6MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. [2021-11-13 18:35:10,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2297.88ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 72.9MB in the beginning and 59.1MB in the end (delta: 13.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 222.80ms. Allocated memory is still 125.8MB. Free memory was 59.1MB in the beginning and 83.5MB in the end (delta: -24.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 162.55ms. Allocated memory is still 125.8MB. Free memory was 83.5MB in the beginning and 75.8MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 5618.64ms. Allocated memory was 125.8MB in the beginning and 207.6MB in the end (delta: 81.8MB). Free memory was 75.8MB in the beginning and 114.4MB in the end (delta: -38.6MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. * TraceAbstraction took 20589.49ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 114.4MB in the beginning and 65.8MB in the end (delta: 48.6MB). Peak memory consumption was 90.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:35:10,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:35:13,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:35:13,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:35:13,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:35:13,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:35:13,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:35:13,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:35:13,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:35:13,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:35:13,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:35:13,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:35:13,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:35:13,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:35:13,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:35:13,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:35:13,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:35:13,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:35:13,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:35:13,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:35:13,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:35:13,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:35:13,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:35:13,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:35:13,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:35:13,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:35:13,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:35:13,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:35:13,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:35:13,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:35:13,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:35:13,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:35:13,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:35:13,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:35:13,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:35:13,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:35:13,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:35:13,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:35:13,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:35:13,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:35:13,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:35:13,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:35:13,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:35:13,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:35:13,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:35:13,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:35:13,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:35:13,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:35:13,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:35:13,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:35:13,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:35:13,893 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:35:13,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:35:13,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:35:13,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:35:13,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:35:13,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:35:13,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:35:13,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:35:13,897 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:35:13,897 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:35:13,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:35:13,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:35:13,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:35:13,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:35:13,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:35:13,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:35:13,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:35:13,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:35:13,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:35:13,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:35:13,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:35:13,901 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:35:13,902 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:35:13,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:35:13,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:35:13,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:35:13,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:35:13,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:35:13,904 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd [2021-11-13 18:35:14,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:35:14,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:35:14,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:35:14,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:35:14,405 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:35:14,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2021-11-13 18:35:14,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/36a7f9864/25584d52caf141ada92724a2ec042bb0/FLAG82ca822f3 [2021-11-13 18:35:15,432 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:35:15,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2021-11-13 18:35:15,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/36a7f9864/25584d52caf141ada92724a2ec042bb0/FLAG82ca822f3 [2021-11-13 18:35:15,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/data/36a7f9864/25584d52caf141ada92724a2ec042bb0 [2021-11-13 18:35:15,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:35:15,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:35:16,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:35:16,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:35:16,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:35:16,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:35:15" (1/1) ... [2021-11-13 18:35:16,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407eefc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:16, skipping insertion in model container [2021-11-13 18:35:16,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:35:15" (1/1) ... [2021-11-13 18:35:16,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:35:16,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:35:16,456 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_e7dc1366-c756-483d-af9c-a3147fc86ab1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i[452,465] [2021-11-13 18:35:18,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:35:18,379 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:35:18,393 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_e7dc1366-c756-483d-af9c-a3147fc86ab1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i[452,465] [2021-11-13 18:35:18,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:35:18,948 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:35:18,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18 WrapperNode [2021-11-13 18:35:18,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:35:18,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:35:18,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:35:18,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:35:18,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:35:19,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:35:19,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:35:19,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:35:19,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:35:19,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:35:19,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:35:19,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:35:19,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (1/1) ... [2021-11-13 18:35:19,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:35:19,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:19,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:35:19,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:35:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-11-13 18:35:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-11-13 18:35:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-13 18:35:19,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-13 18:35:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:35:19,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-11-13 18:35:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:35:19,484 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:35:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:35:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 18:35:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:35:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:35:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:35:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:35:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:35:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-11-13 18:35:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-11-13 18:35:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-11-13 18:35:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:35:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:35:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 18:35:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 18:35:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:35:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-11-13 18:35:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-11-13 18:35:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:35:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:35:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:35:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-11-13 18:35:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-11-13 18:35:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-11-13 18:35:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-11-13 18:35:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:35:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:35:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-11-13 18:35:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-11-13 18:35:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 18:35:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:35:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 18:35:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:35:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:35:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:35:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-13 18:35:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-13 18:35:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:35:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:35:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 18:35:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 18:35:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 18:35:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-13 18:35:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-13 18:35:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:35:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 18:35:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:35:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:35:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-11-13 18:35:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-11-13 18:35:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-13 18:35:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-13 18:35:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-13 18:35:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-13 18:35:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-13 18:35:19,501 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-13 18:35:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-11-13 18:35:19,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-11-13 18:35:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-11-13 18:35:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-11-13 18:35:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-13 18:35:19,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-13 18:35:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-11-13 18:35:19,504 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-11-13 18:35:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 18:35:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-11-13 18:35:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-11-13 18:35:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:35:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:35:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-13 18:35:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-13 18:35:26,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:35:26,094 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 18:35:26,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:35:26 BoogieIcfgContainer [2021-11-13 18:35:26,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:35:26,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:35:26,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:35:26,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:35:26,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:35:15" (1/3) ... [2021-11-13 18:35:26,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679d262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:35:26, skipping insertion in model container [2021-11-13 18:35:26,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:18" (2/3) ... [2021-11-13 18:35:26,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679d262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:35:26, skipping insertion in model container [2021-11-13 18:35:26,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:35:26" (3/3) ... [2021-11-13 18:35:26,108 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_all.i [2021-11-13 18:35:26,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:35:26,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:35:26,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:35:26,184 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:35:26,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:35:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 254 states have internal predecessors, (337), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-13 18:35:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:35:26,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:26,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:26,229 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1228378465, now seen corresponding path program 1 times [2021-11-13 18:35:26,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:35:26,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676934617] [2021-11-13 18:35:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:26,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:35:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:35:26,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:35:26,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:35:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:26,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:35:26,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:27,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:27,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:35:27,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676934617] [2021-11-13 18:35:27,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676934617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:27,236 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:27,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:35:27,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781700331] [2021-11-13 18:35:27,240 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:27,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:35:27,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:35:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:35:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:35:27,282 INFO L87 Difference]: Start difference. First operand has 358 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 254 states have internal predecessors, (337), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:27,710 INFO L93 Difference]: Finished difference Result 862 states and 1302 transitions. [2021-11-13 18:35:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:35:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-13 18:35:27,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:27,742 INFO L225 Difference]: With dead ends: 862 [2021-11-13 18:35:27,742 INFO L226 Difference]: Without dead ends: 490 [2021-11-13 18:35:27,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:35:27,759 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 177 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.30ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:27,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1497 Invalid, 55 Unknown, 0 Unchecked, 28.30ms Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 236.10ms Time] [2021-11-13 18:35:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-13 18:35:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 352. [2021-11-13 18:35:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 245 states have (on average 1.3346938775510204) internal successors, (327), 251 states have internal predecessors, (327), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:35:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 484 transitions. [2021-11-13 18:35:27,878 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 484 transitions. Word has length 24 [2021-11-13 18:35:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:27,879 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 484 transitions. [2021-11-13 18:35:27,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 484 transitions. [2021-11-13 18:35:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 18:35:27,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:27,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:27,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:28,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:35:28,100 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:28,101 INFO L85 PathProgramCache]: Analyzing trace with hash 315750425, now seen corresponding path program 1 times [2021-11-13 18:35:28,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:35:28,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478475460] [2021-11-13 18:35:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:28,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:35:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:35:28,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:35:28,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:35:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:28,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:35:28,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:28,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:29,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:35:29,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478475460] [2021-11-13 18:35:29,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478475460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:35:29,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:35:29,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:35:29,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40521743] [2021-11-13 18:35:29,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:35:29,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:35:29,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:35:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:35:29,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:35:29,063 INFO L87 Difference]: Start difference. First operand 352 states and 484 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:29,574 INFO L93 Difference]: Finished difference Result 703 states and 969 transitions. [2021-11-13 18:35:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:35:29,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-13 18:35:29,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:29,583 INFO L225 Difference]: With dead ends: 703 [2021-11-13 18:35:29,584 INFO L226 Difference]: Without dead ends: 360 [2021-11-13 18:35:29,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:35:29,590 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 174 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.11ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 383.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:29,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 2193 Invalid, 116 Unknown, 0 Unchecked, 13.11ms Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 383.13ms Time] [2021-11-13 18:35:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-13 18:35:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-11-13 18:35:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 253 states have (on average 1.3201581027667983) internal successors, (334), 259 states have internal predecessors, (334), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:35:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 491 transitions. [2021-11-13 18:35:29,656 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 491 transitions. Word has length 30 [2021-11-13 18:35:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:29,656 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 491 transitions. [2021-11-13 18:35:29,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 491 transitions. [2021-11-13 18:35:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:35:29,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:29,659 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:29,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:29,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:35:29,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash 275217425, now seen corresponding path program 2 times [2021-11-13 18:35:29,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:35:29,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750226347] [2021-11-13 18:35:29,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:35:29,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:35:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:35:29,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:35:29,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:35:43,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:35:43,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:35:43,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:35:43,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:44,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:35:44,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:35:44,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750226347] [2021-11-13 18:35:44,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750226347] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:35:44,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:35:44,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-13 18:35:44,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711645404] [2021-11-13 18:35:44,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:35:44,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:35:44,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:35:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:35:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:35:44,441 INFO L87 Difference]: Start difference. First operand 360 states and 491 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:45,528 INFO L93 Difference]: Finished difference Result 711 states and 975 transitions. [2021-11-13 18:35:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:35:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-11-13 18:35:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:45,535 INFO L225 Difference]: With dead ends: 711 [2021-11-13 18:35:45,535 INFO L226 Difference]: Without dead ends: 368 [2021-11-13 18:35:45,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:35:45,539 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 345 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 782.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.91ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 924.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:45,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 3683 Invalid, 365 Unknown, 0 Unchecked, 15.91ms Time], IncrementalHoareTripleChecker [46 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 924.71ms Time] [2021-11-13 18:35:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-13 18:35:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-11-13 18:35:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 261 states have (on average 1.3103448275862069) internal successors, (342), 267 states have internal predecessors, (342), 79 states have call successors, (79), 27 states have call predecessors, (79), 27 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:35:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 499 transitions. [2021-11-13 18:35:45,568 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 499 transitions. Word has length 38 [2021-11-13 18:35:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:45,569 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 499 transitions. [2021-11-13 18:35:45,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:35:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 499 transitions. [2021-11-13 18:35:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:35:45,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:45,572 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:45,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 18:35:45,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:35:45,795 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:45,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:45,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1343588361, now seen corresponding path program 3 times [2021-11-13 18:35:45,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:35:45,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489000334] [2021-11-13 18:35:45,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:35:45,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:35:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:35:45,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:35:45,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:36:03,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-13 18:36:03,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-13 18:36:03,044 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:36:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:36:17,486 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:36:17,486 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:36:17,488 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:36:17,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:17,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:36:17,721 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-13 18:36:17,727 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:36:17,832 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:36:17,837 INFO L158 Benchmark]: Toolchain (without parser) took 61837.75ms. Allocated memory was 58.7MB in the beginning and 163.6MB in the end (delta: 104.9MB). Free memory was 33.9MB in the beginning and 97.1MB in the end (delta: -63.2MB). Peak memory consumption was 111.1MB. Max. memory is 16.1GB. [2021-11-13 18:36:17,838 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 40.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:36:17,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2948.63ms. Allocated memory was 58.7MB in the beginning and 111.1MB in the end (delta: 52.4MB). Free memory was 33.8MB in the beginning and 69.6MB in the end (delta: -35.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2021-11-13 18:36:17,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 225.06ms. Allocated memory is still 111.1MB. Free memory was 69.6MB in the beginning and 60.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:36:17,843 INFO L158 Benchmark]: Boogie Preprocessor took 176.72ms. Allocated memory is still 111.1MB. Free memory was 60.7MB in the beginning and 52.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:36:17,845 INFO L158 Benchmark]: RCFGBuilder took 6744.10ms. Allocated memory was 111.1MB in the beginning and 163.6MB in the end (delta: 52.4MB). Free memory was 52.3MB in the beginning and 94.4MB in the end (delta: -42.0MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2021-11-13 18:36:17,845 INFO L158 Benchmark]: TraceAbstraction took 51736.73ms. Allocated memory is still 163.6MB. Free memory was 94.4MB in the beginning and 97.1MB in the end (delta: -2.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2021-11-13 18:36:17,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 40.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2948.63ms. Allocated memory was 58.7MB in the beginning and 111.1MB in the end (delta: 52.4MB). Free memory was 33.8MB in the beginning and 69.6MB in the end (delta: -35.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 225.06ms. Allocated memory is still 111.1MB. Free memory was 69.6MB in the beginning and 60.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 176.72ms. Allocated memory is still 111.1MB. Free memory was 60.7MB in the beginning and 52.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6744.10ms. Allocated memory was 111.1MB in the beginning and 163.6MB in the end (delta: 52.4MB). Free memory was 52.3MB in the beginning and 94.4MB in the end (delta: -42.0MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * TraceAbstraction took 51736.73ms. Allocated memory is still 163.6MB. Free memory was 94.4MB in the beginning and 97.1MB in the end (delta: -2.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:36:17,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7dc1366-c756-483d-af9c-a3147fc86ab1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null