./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.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_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC --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 d7b99eb0691db756f3c08dc52ba10dd69081a5de ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:29:45,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:45,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:45,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:45,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:45,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:45,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:45,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:45,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:45,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:45,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:45,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:45,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:45,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:45,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:45,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:45,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:45,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:45,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:45,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:45,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:45,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:45,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:45,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:45,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:45,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:45,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:45,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:45,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:45,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:45,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:45,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:45,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:45,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:45,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:45,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:45,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:45,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:45,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:45,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:45,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:45,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:45,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:45,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:45,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:45,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:45,654 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:45,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:45,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:45,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:45,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:45,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:45,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:45,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:45,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:45,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:45,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:45,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:45,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:45,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:45,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:45,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:45,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:45,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:45,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:45,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:45,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:45,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:45,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:45,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:45,661 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_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b99eb0691db756f3c08dc52ba10dd69081a5de [2021-10-11 00:29:45,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:45,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:45,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:45,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:45,979 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:45,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2021-10-11 00:29:46,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/data/f19e82a9a/613fd7e821344454b0dce01c934dea0a/FLAGc0373ed19 [2021-10-11 00:29:46,613 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:46,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2021-10-11 00:29:46,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/data/f19e82a9a/613fd7e821344454b0dce01c934dea0a/FLAGc0373ed19 [2021-10-11 00:29:46,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/data/f19e82a9a/613fd7e821344454b0dce01c934dea0a [2021-10-11 00:29:46,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:46,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:46,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:46,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:46,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:46,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f4f70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46, skipping insertion in model container [2021-10-11 00:29:46,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:46,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:47,174 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_8d627656-a80b-47c2-b9da-09fffd864808/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i[949,962] [2021-10-11 00:29:47,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:47,332 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:47,351 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_8d627656-a80b-47c2-b9da-09fffd864808/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i[949,962] [2021-10-11 00:29:47,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:47,480 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47 WrapperNode [2021-10-11 00:29:47,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:47,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:47,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:47,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:47,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:47,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:47,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:47,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:47,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... [2021-10-11 00:29:47,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:47,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:47,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:47,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:47,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/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 00:29:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:29:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 00:29:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:29:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 00:29:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 00:29:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 00:29:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 00:29:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 00:29:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:47,637 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 00:29:48,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:48,017 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 00:29:48,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:48 BoogieIcfgContainer [2021-10-11 00:29:48,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:48,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:48,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:48,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:48,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:46" (1/3) ... [2021-10-11 00:29:48,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c78945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:48, skipping insertion in model container [2021-10-11 00:29:48,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:47" (2/3) ... [2021-10-11 00:29:48,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c78945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:48, skipping insertion in model container [2021-10-11 00:29:48,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:48" (3/3) ... [2021-10-11 00:29:48,041 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2021-10-11 00:29:48,054 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 00:29:48,054 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:48,058 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:29:48,059 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 00:29:48,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,093 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,093 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,097 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,097 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,097 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,098 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:48,106 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 00:29:48,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:29:48,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:48,138 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:48,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:48,139 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:48,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:48,139 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:48,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:48,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:48,151 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 00:29:48,153 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 60 transitions, 130 flow [2021-10-11 00:29:48,157 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 60 transitions, 130 flow [2021-10-11 00:29:48,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-10-11 00:29:48,199 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-10-11 00:29:48,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 00:29:48,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-11 00:29:48,206 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-10-11 00:29:50,920 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 00:29:51,186 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-10-11 00:29:51,290 INFO L131 LiptonReduction]: Checked pairs total: 1378 [2021-10-11 00:29:51,290 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-10-11 00:29:51,296 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 16 transitions, 42 flow [2021-10-11 00:29:51,307 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2021-10-11 00:29:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2021-10-11 00:29:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:29:51,315 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:51,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:29:51,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:51,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1925010784, now seen corresponding path program 1 times [2021-10-11 00:29:51,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:51,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020421217] [2021-10-11 00:29:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:51,552 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 00:29:51,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020421217] [2021-10-11 00:29:51,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:51,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:29:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588873836] [2021-10-11 00:29:51,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:51,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:51,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:51,580 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2021-10-11 00:29:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:51,627 INFO L93 Difference]: Finished difference Result 104 states and 207 transitions. [2021-10-11 00:29:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:51,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:29:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:51,641 INFO L225 Difference]: With dead ends: 104 [2021-10-11 00:29:51,642 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 00:29:51,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:29:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 00:29:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-10-11 00:29:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 00:29:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 109 transitions. [2021-10-11 00:29:51,692 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 109 transitions. Word has length 6 [2021-10-11 00:29:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:51,693 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 109 transitions. [2021-10-11 00:29:51,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 109 transitions. [2021-10-11 00:29:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:29:51,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:51,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:51,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:51,698 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash 454629136, now seen corresponding path program 1 times [2021-10-11 00:29:51,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:51,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482035132] [2021-10-11 00:29:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:51,842 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 00:29:51,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482035132] [2021-10-11 00:29:51,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:51,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:29:51,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130667577] [2021-10-11 00:29:51,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:51,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:51,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:51,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:51,845 INFO L87 Difference]: Start difference. First operand 57 states and 109 transitions. Second operand 3 states. [2021-10-11 00:29:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:51,856 INFO L93 Difference]: Finished difference Result 54 states and 101 transitions. [2021-10-11 00:29:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:51,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 00:29:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:51,860 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:29:51,860 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 00:29:51,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:29:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 00:29:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-11 00:29:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 00:29:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2021-10-11 00:29:51,878 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2021-10-11 00:29:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:51,878 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2021-10-11 00:29:51,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2021-10-11 00:29:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:29:51,879 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:51,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:51,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:51,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:51,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:51,880 INFO L82 PathProgramCache]: Analyzing trace with hash 454206947, now seen corresponding path program 1 times [2021-10-11 00:29:51,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:51,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375892178] [2021-10-11 00:29:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:51,989 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 00:29:51,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375892178] [2021-10-11 00:29:51,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:51,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:51,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611091777] [2021-10-11 00:29:51,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:51,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:51,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:51,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:51,993 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 4 states. [2021-10-11 00:29:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:52,015 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2021-10-11 00:29:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:52,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:29:52,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:52,020 INFO L225 Difference]: With dead ends: 57 [2021-10-11 00:29:52,021 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 00:29:52,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 00:29:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-10-11 00:29:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 00:29:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 95 transitions. [2021-10-11 00:29:52,041 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 95 transitions. Word has length 7 [2021-10-11 00:29:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:52,042 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 95 transitions. [2021-10-11 00:29:52,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 95 transitions. [2021-10-11 00:29:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:29:52,045 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:52,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:52,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:29:52,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:52,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:52,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1208600435, now seen corresponding path program 1 times [2021-10-11 00:29:52,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:52,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347096855] [2021-10-11 00:29:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:52,114 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 00:29:52,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347096855] [2021-10-11 00:29:52,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:52,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:52,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316583716] [2021-10-11 00:29:52,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:52,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:52,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:52,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:52,117 INFO L87 Difference]: Start difference. First operand 51 states and 95 transitions. Second operand 4 states. [2021-10-11 00:29:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:52,165 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2021-10-11 00:29:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:52,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 00:29:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:52,167 INFO L225 Difference]: With dead ends: 63 [2021-10-11 00:29:52,167 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 00:29:52,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 00:29:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-10-11 00:29:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 00:29:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 93 transitions. [2021-10-11 00:29:52,173 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 93 transitions. Word has length 8 [2021-10-11 00:29:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:52,173 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 93 transitions. [2021-10-11 00:29:52,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 93 transitions. [2021-10-11 00:29:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:29:52,174 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:52,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:52,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:29:52,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:52,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:52,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1195512545, now seen corresponding path program 2 times [2021-10-11 00:29:52,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:52,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072512892] [2021-10-11 00:29:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:52,214 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 00:29:52,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072512892] [2021-10-11 00:29:52,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:52,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:52,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830416818] [2021-10-11 00:29:52,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:52,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:52,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:52,217 INFO L87 Difference]: Start difference. First operand 51 states and 93 transitions. Second operand 4 states. [2021-10-11 00:29:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:52,230 INFO L93 Difference]: Finished difference Result 52 states and 85 transitions. [2021-10-11 00:29:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:52,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 00:29:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:52,232 INFO L225 Difference]: With dead ends: 52 [2021-10-11 00:29:52,232 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 00:29:52,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 00:29:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-11 00:29:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 00:29:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2021-10-11 00:29:52,235 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 43 transitions. Word has length 8 [2021-10-11 00:29:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:52,236 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 43 transitions. [2021-10-11 00:29:52,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 43 transitions. [2021-10-11 00:29:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:29:52,236 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:52,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:52,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:29:52,237 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1199016759, now seen corresponding path program 1 times [2021-10-11 00:29:52,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:52,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712513145] [2021-10-11 00:29:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:52,307 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 00:29:52,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712513145] [2021-10-11 00:29:52,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:52,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:52,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287859208] [2021-10-11 00:29:52,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:52,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:52,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:52,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:52,309 INFO L87 Difference]: Start difference. First operand 28 states and 43 transitions. Second operand 4 states. [2021-10-11 00:29:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:52,326 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-11 00:29:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:52,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:29:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:52,327 INFO L225 Difference]: With dead ends: 27 [2021-10-11 00:29:52,327 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 00:29:52,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 00:29:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 00:29:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 00:29:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2021-10-11 00:29:52,330 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2021-10-11 00:29:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:52,330 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-11 00:29:52,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2021-10-11 00:29:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:29:52,331 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:52,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:52,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:29:52,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:52,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1520437605, now seen corresponding path program 1 times [2021-10-11 00:29:52,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:52,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341886664] [2021-10-11 00:29:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:52,376 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 00:29:52,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341886664] [2021-10-11 00:29:52,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:52,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:52,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253441002] [2021-10-11 00:29:52,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:52,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:52,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:52,379 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 5 states. [2021-10-11 00:29:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:52,393 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2021-10-11 00:29:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:52,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:29:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:52,393 INFO L225 Difference]: With dead ends: 18 [2021-10-11 00:29:52,393 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:29:52,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:29:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:29:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:29:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:29:52,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-11 00:29:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:52,395 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:29:52,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:29:52,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:29:52,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:29:52,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:52 BasicIcfg [2021-10-11 00:29:52,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:52,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:52,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:52,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:52,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:48" (3/4) ... [2021-10-11 00:29:52,403 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:29:52,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 00:29:52,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 00:29:52,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 00:29:52,415 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:29:52,415 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:29:52,415 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:29:52,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d627656-a80b-47c2-b9da-09fffd864808/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:52,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:52,464 INFO L168 Benchmark]: Toolchain (without parser) took 5554.10 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 71.1 MB in the beginning and 98.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:52,465 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 104.9 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:52,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.75 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 58.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:52,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.97 ms. Allocated memory is still 104.9 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:52,467 INFO L168 Benchmark]: Boogie Preprocessor took 25.83 ms. Allocated memory is still 104.9 MB. Free memory was 56.5 MB in the beginning and 55.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:52,467 INFO L168 Benchmark]: RCFGBuilder took 464.54 ms. Allocated memory is still 104.9 MB. Free memory was 55.0 MB in the beginning and 81.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:52,468 INFO L168 Benchmark]: TraceAbstraction took 4367.61 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 80.7 MB in the beginning and 101.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:52,469 INFO L168 Benchmark]: Witness Printer took 63.57 ms. Allocated memory is still 159.4 MB. Free memory was 101.0 MB in the beginning and 98.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:52,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 104.9 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 567.75 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 58.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.97 ms. Allocated memory is still 104.9 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.83 ms. Allocated memory is still 104.9 MB. Free memory was 56.5 MB in the beginning and 55.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 464.54 ms. Allocated memory is still 104.9 MB. Free memory was 55.0 MB in the beginning and 81.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4367.61 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 80.7 MB in the beginning and 101.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * Witness Printer took 63.57 ms. Allocated memory is still 159.4 MB. Free memory was 101.0 MB in the beginning and 98.9 MB in the end (delta: 2.1 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 473 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 65 PlacesBefore, 22 PlacesAfterwards, 60 TransitionsBefore, 16 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1378 MoverChecksTotal - PositiveResult [Line: 18]: 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 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 86 SDtfs, 58 SDslu, 81 SDs, 0 SdLazy, 39 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1248 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...