./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/17_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/17_szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:56,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:56,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:56,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:56,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:56,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:56,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:56,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:56,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:56,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:56,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:56,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:56,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:56,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:56,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:56,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:56,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:56,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:56,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:56,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:56,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:56,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:56,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:56,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:56,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:56,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:56,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:56,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:56,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:56,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:56,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:56,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:56,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:56,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:56,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:56,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:56,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:56,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:56,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:56,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:56,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:56,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:56,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:56,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:56,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:56,622 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:56,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:56,622 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:56,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:56,623 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:56,623 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:56,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:56,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:56,631 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:56,632 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:56,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:56,633 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:56,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:56,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:56,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:56,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:56,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:56,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:56,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:56,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:56,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:56,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:56,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:56,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:56,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:56,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:56,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:56,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:56,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:56,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:56,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:56,641 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:56,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:56,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:56,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:56,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:56,642 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2021-10-11 02:23:56,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:56,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:56,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:56,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:56,944 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:56,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-ext/17_szymanski.i [2021-10-11 02:23:57,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/data/388e9eb76/8e9b86e8516446bd9500cffb8a3ae3a1/FLAG717787d20 [2021-10-11 02:23:57,696 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:57,700 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/sv-benchmarks/c/pthread-ext/17_szymanski.i [2021-10-11 02:23:57,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/data/388e9eb76/8e9b86e8516446bd9500cffb8a3ae3a1/FLAG717787d20 [2021-10-11 02:23:57,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/data/388e9eb76/8e9b86e8516446bd9500cffb8a3ae3a1 [2021-10-11 02:23:57,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:57,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:57,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:57,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:57,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:57,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:57" (1/1) ... [2021-10-11 02:23:57,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9d7987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:57, skipping insertion in model container [2021-10-11 02:23:57,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:57" (1/1) ... [2021-10-11 02:23:57,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:58,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:58,388 WARN L226 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_8aa7e3e9-1440-44ef-b076-64b9e2cad066/sv-benchmarks/c/pthread-ext/17_szymanski.i[30132,30145] [2021-10-11 02:23:58,404 WARN L226 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_8aa7e3e9-1440-44ef-b076-64b9e2cad066/sv-benchmarks/c/pthread-ext/17_szymanski.i[30481,30494] [2021-10-11 02:23:58,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:58,423 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:58,488 WARN L226 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_8aa7e3e9-1440-44ef-b076-64b9e2cad066/sv-benchmarks/c/pthread-ext/17_szymanski.i[30132,30145] [2021-10-11 02:23:58,491 WARN L226 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_8aa7e3e9-1440-44ef-b076-64b9e2cad066/sv-benchmarks/c/pthread-ext/17_szymanski.i[30481,30494] [2021-10-11 02:23:58,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:58,586 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:58,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58 WrapperNode [2021-10-11 02:23:58,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:58,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:58,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:58,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:58,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:58,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:58,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:58,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:58,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:58,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:58,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:58,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:58,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-11 02:23:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-11 02:23:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:58,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:58,748 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:23:59,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:59,156 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:23:59,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:59 BoogieIcfgContainer [2021-10-11 02:23:59,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:59,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:59,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:59,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:59,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:57" (1/3) ... [2021-10-11 02:23:59,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f4b9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:59, skipping insertion in model container [2021-10-11 02:23:59,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58" (2/3) ... [2021-10-11 02:23:59,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f4b9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:59, skipping insertion in model container [2021-10-11 02:23:59,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:59" (3/3) ... [2021-10-11 02:23:59,171 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-10-11 02:23:59,189 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:23:59,190 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:59,193 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:23:59,194 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:23:59,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,244 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,244 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,245 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:23:59,266 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:23:59,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:23:59,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:59,311 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:59,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:59,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:59,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:59,311 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:59,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:59,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:59,326 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:23:59,328 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 88 transitions, 181 flow [2021-10-11 02:23:59,330 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 88 transitions, 181 flow [2021-10-11 02:23:59,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-10-11 02:23:59,380 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-10-11 02:23:59,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:23:59,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-10-11 02:23:59,393 INFO L116 LiptonReduction]: Number of co-enabled transitions 2542 [2021-10-11 02:24:00,971 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-10-11 02:24:01,235 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-10-11 02:24:01,327 INFO L131 LiptonReduction]: Checked pairs total: 4971 [2021-10-11 02:24:01,328 INFO L133 LiptonReduction]: Total number of compositions: 49 [2021-10-11 02:24:01,334 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2021-10-11 02:24:01,358 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2021-10-11 02:24:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2021-10-11 02:24:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:01,374 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:01,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:01,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:01,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:01,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2012510747, now seen corresponding path program 1 times [2021-10-11 02:24:01,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:01,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360425657] [2021-10-11 02:24:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:01,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360425657] [2021-10-11 02:24:01,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:01,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:01,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096216901] [2021-10-11 02:24:01,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:24:01,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:01,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:24:01,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:01,558 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2021-10-11 02:24:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,582 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2021-10-11 02:24:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:24:01,583 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-10-11 02:24:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,596 INFO L225 Difference]: With dead ends: 198 [2021-10-11 02:24:01,598 INFO L226 Difference]: Without dead ends: 198 [2021-10-11 02:24:01,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-11 02:24:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-11 02:24:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-10-11 02:24:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2021-10-11 02:24:01,674 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2021-10-11 02:24:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,674 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2021-10-11 02:24:01,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:24:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2021-10-11 02:24:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:24:01,676 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:01,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:01,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:01,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:01,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1380149915, now seen corresponding path program 1 times [2021-10-11 02:24:01,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:01,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691219165] [2021-10-11 02:24:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:01,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691219165] [2021-10-11 02:24:01,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:01,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:01,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690008261] [2021-10-11 02:24:01,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:01,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:01,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:01,761 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2021-10-11 02:24:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,810 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2021-10-11 02:24:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:01,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-10-11 02:24:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,823 INFO L225 Difference]: With dead ends: 362 [2021-10-11 02:24:01,826 INFO L226 Difference]: Without dead ends: 362 [2021-10-11 02:24:01,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:01,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-10-11 02:24:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2021-10-11 02:24:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-10-11 02:24:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2021-10-11 02:24:01,856 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2021-10-11 02:24:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,857 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2021-10-11 02:24:01,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2021-10-11 02:24:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:24:01,858 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:01,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:01,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:01,859 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1068535658, now seen corresponding path program 1 times [2021-10-11 02:24:01,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:01,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410320214] [2021-10-11 02:24:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:01,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410320214] [2021-10-11 02:24:01,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:01,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:01,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662361274] [2021-10-11 02:24:01,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:01,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:01,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:01,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:01,906 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2021-10-11 02:24:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,923 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2021-10-11 02:24:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:01,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-10-11 02:24:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,928 INFO L225 Difference]: With dead ends: 348 [2021-10-11 02:24:01,928 INFO L226 Difference]: Without dead ends: 348 [2021-10-11 02:24:01,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-11 02:24:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2021-10-11 02:24:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2021-10-11 02:24:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2021-10-11 02:24:01,947 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2021-10-11 02:24:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,947 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2021-10-11 02:24:01,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2021-10-11 02:24:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:24:01,954 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:01,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:01,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:01,955 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 979559035, now seen corresponding path program 1 times [2021-10-11 02:24:01,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:01,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674186571] [2021-10-11 02:24:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:02,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674186571] [2021-10-11 02:24:02,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:02,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:02,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032967226] [2021-10-11 02:24:02,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:02,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:02,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:02,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,034 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2021-10-11 02:24:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:02,092 INFO L93 Difference]: Finished difference Result 238 states and 595 transitions. [2021-10-11 02:24:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:02,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:24:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:02,096 INFO L225 Difference]: With dead ends: 238 [2021-10-11 02:24:02,097 INFO L226 Difference]: Without dead ends: 238 [2021-10-11 02:24:02,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-11 02:24:02,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-10-11 02:24:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-10-11 02:24:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 595 transitions. [2021-10-11 02:24:02,120 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 595 transitions. Word has length 19 [2021-10-11 02:24:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:02,120 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 595 transitions. [2021-10-11 02:24:02,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:02,120 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 595 transitions. [2021-10-11 02:24:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:24:02,131 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:02,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:02,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:02,132 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash 908200443, now seen corresponding path program 2 times [2021-10-11 02:24:02,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:02,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839431820] [2021-10-11 02:24:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:02,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839431820] [2021-10-11 02:24:02,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:02,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:02,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859691647] [2021-10-11 02:24:02,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:02,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:02,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,212 INFO L87 Difference]: Start difference. First operand 238 states and 595 transitions. Second operand 3 states. [2021-10-11 02:24:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:02,265 INFO L93 Difference]: Finished difference Result 246 states and 592 transitions. [2021-10-11 02:24:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:02,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:24:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:02,269 INFO L225 Difference]: With dead ends: 246 [2021-10-11 02:24:02,269 INFO L226 Difference]: Without dead ends: 245 [2021-10-11 02:24:02,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-11 02:24:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2021-10-11 02:24:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2021-10-11 02:24:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 584 transitions. [2021-10-11 02:24:02,288 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 584 transitions. Word has length 19 [2021-10-11 02:24:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:02,289 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 584 transitions. [2021-10-11 02:24:02,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 584 transitions. [2021-10-11 02:24:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:24:02,291 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:02,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:02,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:02,292 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:02,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:02,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1161819517, now seen corresponding path program 3 times [2021-10-11 02:24:02,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:02,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362240710] [2021-10-11 02:24:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:02,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362240710] [2021-10-11 02:24:02,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:02,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:02,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474655140] [2021-10-11 02:24:02,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:02,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:02,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:02,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,337 INFO L87 Difference]: Start difference. First operand 243 states and 584 transitions. Second operand 3 states. [2021-10-11 02:24:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:02,371 INFO L93 Difference]: Finished difference Result 241 states and 568 transitions. [2021-10-11 02:24:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:02,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:24:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:02,374 INFO L225 Difference]: With dead ends: 241 [2021-10-11 02:24:02,374 INFO L226 Difference]: Without dead ends: 241 [2021-10-11 02:24:02,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-10-11 02:24:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-10-11 02:24:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2021-10-11 02:24:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 568 transitions. [2021-10-11 02:24:02,383 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 568 transitions. Word has length 19 [2021-10-11 02:24:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:02,383 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 568 transitions. [2021-10-11 02:24:02,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 568 transitions. [2021-10-11 02:24:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:24:02,385 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:02,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:02,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:02,385 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:02,386 INFO L82 PathProgramCache]: Analyzing trace with hash 853429251, now seen corresponding path program 4 times [2021-10-11 02:24:02,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:02,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575875260] [2021-10-11 02:24:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:02,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575875260] [2021-10-11 02:24:02,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:02,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:02,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924748557] [2021-10-11 02:24:02,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:02,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:02,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,445 INFO L87 Difference]: Start difference. First operand 241 states and 568 transitions. Second operand 3 states. [2021-10-11 02:24:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:02,485 INFO L93 Difference]: Finished difference Result 193 states and 449 transitions. [2021-10-11 02:24:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:02,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:24:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:02,488 INFO L225 Difference]: With dead ends: 193 [2021-10-11 02:24:02,488 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:02,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:02,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-11 02:24:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:02,490 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:02,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:02,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:02,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:02,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:02 BasicIcfg [2021-10-11 02:24:02,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:02,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:02,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:02,495 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:02,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:59" (3/4) ... [2021-10-11 02:24:02,502 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:02,511 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-10-11 02:24:02,519 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:24:02,520 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:24:02,520 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:02,520 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:02,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa7e3e9-1440-44ef-b076-64b9e2cad066/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:02,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:02,566 INFO L168 Benchmark]: Toolchain (without parser) took 4614.00 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 72.5 MB in the beginning and 50.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,566 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 60.9 MB in the end (delta: 62.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:02,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.53 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 58.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.51 ms. Allocated memory is still 102.8 MB. Free memory was 58.4 MB in the beginning and 56.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,569 INFO L168 Benchmark]: Boogie Preprocessor took 28.51 ms. Allocated memory is still 102.8 MB. Free memory was 56.4 MB in the beginning and 55.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,569 INFO L168 Benchmark]: RCFGBuilder took 498.22 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 55.0 MB in the beginning and 87.3 MB in the end (delta: -32.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,570 INFO L168 Benchmark]: TraceAbstraction took 3333.38 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 86.7 MB in the beginning and 53.4 MB in the end (delta: 33.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,571 INFO L168 Benchmark]: Witness Printer took 69.38 ms. Allocated memory is still 148.9 MB. Free memory was 53.4 MB in the beginning and 50.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:02,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 60.9 MB in the end (delta: 62.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 628.53 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 58.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.51 ms. Allocated memory is still 102.8 MB. Free memory was 58.4 MB in the beginning and 56.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.51 ms. Allocated memory is still 102.8 MB. Free memory was 56.4 MB in the beginning and 55.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 498.22 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 55.0 MB in the beginning and 87.3 MB in the end (delta: -32.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3333.38 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 86.7 MB in the beginning and 53.4 MB in the end (delta: 33.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 69.38 ms. Allocated memory is still 148.9 MB. Free memory was 53.4 MB in the beginning and 50.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1204 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 36 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 192 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 68 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 51 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 49 TotalNumberOfCompositions, 4971 MoverChecksTotal - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 373 SDtfs, 153 SDslu, 139 SDs, 0 SdLazy, 97 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 273 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...