./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3 --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 a13961418fec0d16c53db1d204e2c00858b0a3a5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3 --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 a13961418fec0d16c53db1d204e2c00858b0a3a5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:19:10,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:19:10,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:19:10,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:19:10,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:19:10,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:19:10,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:19:10,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:19:10,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:19:10,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:19:10,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:19:10,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:19:10,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:19:10,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:19:10,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:19:10,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:19:10,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:19:10,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:19:10,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:19:10,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:19:10,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:19:10,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:19:10,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:19:10,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:19:10,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:19:10,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:19:10,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:19:10,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:19:10,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:19:10,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:19:10,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:19:10,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:19:10,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:19:10,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:19:10,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:19:10,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:19:10,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:19:10,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:19:10,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:19:10,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:19:10,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:19:10,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:19:10,648 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:19:10,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:19:10,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:19:10,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:19:10,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:19:10,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:19:10,651 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:19:10,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:19:10,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:19:10,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:19:10,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:19:10,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:19:10,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:19:10,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:19:10,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:19:10,653 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:19:10,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:19:10,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:19:10,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:19:10,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:19:10,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:19:10,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:19:10,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:19:10,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:19:10,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:19:10,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:19:10,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:19:10,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:19:10,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:19:10,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:19:10,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:19:10,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:19:10,657 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_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a13961418fec0d16c53db1d204e2c00858b0a3a5 [2021-10-15 19:19:10,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:19:11,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:19:11,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:19:11,026 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:19:11,027 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:19:11,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-crafted/bAnd5.i [2021-10-15 19:19:11,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/b0e539c0f/cf886e753c404c4598fd5c628472b061/FLAG699e6c4ff [2021-10-15 19:19:11,653 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:19:11,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/sv-benchmarks/c/array-crafted/bAnd5.i [2021-10-15 19:19:11,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/b0e539c0f/cf886e753c404c4598fd5c628472b061/FLAG699e6c4ff [2021-10-15 19:19:12,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/b0e539c0f/cf886e753c404c4598fd5c628472b061 [2021-10-15 19:19:12,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:19:12,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:19:12,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:19:12,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:19:12,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:19:12,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2596a3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12, skipping insertion in model container [2021-10-15 19:19:12,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:19:12,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:19:12,328 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2021-10-15 19:19:12,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:19:12,341 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:19:12,385 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2021-10-15 19:19:12,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:19:12,404 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:19:12,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12 WrapperNode [2021-10-15 19:19:12,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:19:12,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:19:12,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:19:12,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:19:12,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:19:12,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:19:12,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:19:12,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:19:12,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:19:12,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:19:12,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:19:12,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:19:12,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (1/1) ... [2021-10-15 19:19:12,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:19:12,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:19:12,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:19:12,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:19:12,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:19:12,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:19:12,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:19:12,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:19:12,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:19:12,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:19:12,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:19:12,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:19:12,918 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:19:12,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:19:12 BoogieIcfgContainer [2021-10-15 19:19:12,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:19:12,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:19:12,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:19:12,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:19:12,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:19:12" (1/3) ... [2021-10-15 19:19:12,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ddaca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:19:12, skipping insertion in model container [2021-10-15 19:19:12,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:12" (2/3) ... [2021-10-15 19:19:12,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ddaca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:19:12, skipping insertion in model container [2021-10-15 19:19:12,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:19:12" (3/3) ... [2021-10-15 19:19:12,933 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2021-10-15 19:19:12,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:19:12,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:19:13,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:19:13,031 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:19:13,031 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:19:13,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:19:13,072 INFO L129 PetriNetUnfolder]: 12/40 cut-off events. [2021-10-15 19:19:13,072 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:13,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 12/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:19:13,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:19:13,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 33 transitions, 66 flow [2021-10-15 19:19:13,095 INFO L129 PetriNetUnfolder]: 10/32 cut-off events. [2021-10-15 19:19:13,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:13,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:13,112 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:13,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:13,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2132287054, now seen corresponding path program 1 times [2021-10-15 19:19:13,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:19:13,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453471777] [2021-10-15 19:19:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:13,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:19:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:13,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:19:13,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453471777] [2021-10-15 19:19:13,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453471777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:19:13,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:19:13,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:19:13,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678550729] [2021-10-15 19:19:13,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:19:13,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:19:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:19:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:19:13,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2021-10-15 19:19:13,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 33 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:13,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2021-10-15 19:19:13,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:13,632 INFO L129 PetriNetUnfolder]: 5/30 cut-off events. [2021-10-15 19:19:13,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:13,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 30 events. 5/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 1. Up to 16 conditions per place. [2021-10-15 19:19:13,635 INFO L132 encePairwiseOnDemand]: 32/40 looper letters, 15 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2021-10-15 19:19:13,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 94 flow [2021-10-15 19:19:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:19:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:19:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2021-10-15 19:19:13,651 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-10-15 19:19:13,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2021-10-15 19:19:13,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2021-10-15 19:19:13,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:13,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2021-10-15 19:19:13,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,668 INFO L186 Difference]: Start difference. First operand has 24 places, 33 transitions, 66 flow. Second operand 3 states and 78 transitions. [2021-10-15 19:19:13,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 94 flow [2021-10-15 19:19:13,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 94 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:19:13,676 INFO L242 Difference]: Finished difference. Result has 27 places, 29 transitions, 68 flow [2021-10-15 19:19:13,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2021-10-15 19:19:13,680 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-10-15 19:19:13,680 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 68 flow [2021-10-15 19:19:13,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:13,681 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:13,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:19:13,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:13,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2143387046, now seen corresponding path program 1 times [2021-10-15 19:19:13,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:19:13,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657854914] [2021-10-15 19:19:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:13,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:19:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:19:13,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:19:13,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657854914] [2021-10-15 19:19:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657854914] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:19:13,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:19:13,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:19:13,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274050098] [2021-10-15 19:19:13,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:19:13,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:19:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:19:13,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:19:13,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2021-10-15 19:19:13,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:13,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2021-10-15 19:19:13,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:13,954 INFO L129 PetriNetUnfolder]: 5/36 cut-off events. [2021-10-15 19:19:13,955 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:19:13,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 36 events. 5/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 55. Up to 18 conditions per place. [2021-10-15 19:19:13,957 INFO L132 encePairwiseOnDemand]: 30/40 looper letters, 18 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2021-10-15 19:19:13,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 130 flow [2021-10-15 19:19:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:19:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:19:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2021-10-15 19:19:13,963 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.525 [2021-10-15 19:19:13,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2021-10-15 19:19:13,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2021-10-15 19:19:13,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:13,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2021-10-15 19:19:13,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,975 INFO L186 Difference]: Start difference. First operand has 27 places, 29 transitions, 68 flow. Second operand 4 states and 84 transitions. [2021-10-15 19:19:13,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 130 flow [2021-10-15 19:19:13,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:19:13,979 INFO L242 Difference]: Finished difference. Result has 30 places, 32 transitions, 104 flow [2021-10-15 19:19:13,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=32} [2021-10-15 19:19:13,980 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2021-10-15 19:19:13,980 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 104 flow [2021-10-15 19:19:13,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:13,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:13,981 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:13,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:19:13,981 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:13,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:13,982 INFO L82 PathProgramCache]: Analyzing trace with hash 46775620, now seen corresponding path program 1 times [2021-10-15 19:19:13,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:19:13,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234217284] [2021-10-15 19:19:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:13,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:19:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:19:14,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:19:14,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234217284] [2021-10-15 19:19:14,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234217284] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:19:14,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:19:14,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:19:14,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097875885] [2021-10-15 19:19:14,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:19:14,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:19:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:19:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:19:14,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 40 [2021-10-15 19:19:14,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:14,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 40 [2021-10-15 19:19:14,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:14,229 INFO L129 PetriNetUnfolder]: 5/38 cut-off events. [2021-10-15 19:19:14,230 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-15 19:19:14,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 38 events. 5/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2021-10-15 19:19:14,231 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 15 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-10-15 19:19:14,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 144 flow [2021-10-15 19:19:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:19:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:19:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2021-10-15 19:19:14,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.54375 [2021-10-15 19:19:14,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2021-10-15 19:19:14,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2021-10-15 19:19:14,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:14,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2021-10-15 19:19:14,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,238 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,238 INFO L186 Difference]: Start difference. First operand has 30 places, 32 transitions, 104 flow. Second operand 4 states and 87 transitions. [2021-10-15 19:19:14,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 144 flow [2021-10-15 19:19:14,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:19:14,242 INFO L242 Difference]: Finished difference. Result has 32 places, 33 transitions, 110 flow [2021-10-15 19:19:14,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2021-10-15 19:19:14,243 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2021-10-15 19:19:14,243 INFO L470 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 110 flow [2021-10-15 19:19:14,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:14,244 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:14,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:19:14,245 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:14,245 INFO L82 PathProgramCache]: Analyzing trace with hash -548779230, now seen corresponding path program 1 times [2021-10-15 19:19:14,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:19:14,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208766988] [2021-10-15 19:19:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:14,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:19:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:19:14,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:19:14,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208766988] [2021-10-15 19:19:14,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208766988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:19:14,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650090076] [2021-10-15 19:19:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:14,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:19:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:19:14,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:19:14,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:19:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:14,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:19:14,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:19:14,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650090076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:19:14,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:19:14,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-15 19:19:14,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270589773] [2021-10-15 19:19:14,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:19:14,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:19:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:19:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:19:14,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2021-10-15 19:19:14,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:14,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2021-10-15 19:19:14,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:14,821 INFO L129 PetriNetUnfolder]: 5/40 cut-off events. [2021-10-15 19:19:14,822 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:19:14,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 40 events. 5/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 60. Up to 19 conditions per place. [2021-10-15 19:19:14,823 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 14 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2021-10-15 19:19:14,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 156 flow [2021-10-15 19:19:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:19:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:19:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2021-10-15 19:19:14,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.55 [2021-10-15 19:19:14,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 110 transitions. [2021-10-15 19:19:14,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 110 transitions. [2021-10-15 19:19:14,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:14,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 110 transitions. [2021-10-15 19:19:14,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,830 INFO L186 Difference]: Start difference. First operand has 32 places, 33 transitions, 110 flow. Second operand 5 states and 110 transitions. [2021-10-15 19:19:14,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 156 flow [2021-10-15 19:19:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:19:14,834 INFO L242 Difference]: Finished difference. Result has 36 places, 35 transitions, 132 flow [2021-10-15 19:19:14,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2021-10-15 19:19:14,834 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2021-10-15 19:19:14,835 INFO L470 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 132 flow [2021-10-15 19:19:14,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:14,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:14,836 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:14,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:19:15,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:19:15,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:15,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 2 times [2021-10-15 19:19:15,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:19:15,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232715946] [2021-10-15 19:19:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:15,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:19:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:19:15,120 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:19:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:19:15,232 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:19:15,233 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:19:15,234 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:19:15,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:19:15,243 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:19:15,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:19:15 BoogieIcfgContainer [2021-10-15 19:19:15,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:19:15,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:19:15,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:19:15,303 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:19:15,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:19:12" (3/4) ... [2021-10-15 19:19:15,307 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:19:15,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:19:15,309 INFO L168 Benchmark]: Toolchain (without parser) took 3273.08 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 57.7 MB in the beginning and 54.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:19:15,310 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 62.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:19:15,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.48 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 57.7 MB in the beginning and 93.2 MB in the end (delta: -35.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:19:15,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.14 ms. Allocated memory is still 117.4 MB. Free memory was 93.2 MB in the beginning and 91.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:19:15,312 INFO L168 Benchmark]: Boogie Preprocessor took 33.56 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:19:15,313 INFO L168 Benchmark]: RCFGBuilder took 401.94 ms. Allocated memory is still 117.4 MB. Free memory was 89.6 MB in the beginning and 77.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:19:15,313 INFO L168 Benchmark]: TraceAbstraction took 2379.01 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 54.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:19:15,314 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 117.4 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:19:15,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 62.3 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.48 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 57.7 MB in the beginning and 93.2 MB in the end (delta: -35.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.14 ms. Allocated memory is still 117.4 MB. Free memory was 93.2 MB in the beginning and 91.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.56 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 401.94 ms. Allocated memory is still 117.4 MB. Free memory was 89.6 MB in the beginning and 77.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2379.01 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 54.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.25 ms. Allocated memory is still 117.4 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L17] int N; VAL [N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND FALSE !(i < N) VAL [N=2] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res & x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) VAL [N=2] [L27] return res; VAL [N=2] [L45] ret = bAnd(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res & x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) VAL [N=2] [L27] return res; VAL [N=2] [L48] ret2 = bAnd(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [N=2] [L50] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3 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 -> a13961418fec0d16c53db1d204e2c00858b0a3a5 [2021-10-15 19:19:18,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:19:18,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:19:18,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:19:18,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:19:18,967 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:19:18,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-crafted/bAnd5.i [2021-10-15 19:19:19,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/88f0b7e09/8e00c37673984d31abe15784ef6c566e/FLAG5d421a95d [2021-10-15 19:19:19,709 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:19:19,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/sv-benchmarks/c/array-crafted/bAnd5.i [2021-10-15 19:19:19,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/88f0b7e09/8e00c37673984d31abe15784ef6c566e/FLAG5d421a95d [2021-10-15 19:19:20,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/data/88f0b7e09/8e00c37673984d31abe15784ef6c566e [2021-10-15 19:19:20,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:19:20,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:19:20,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:19:20,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:19:20,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:19:20,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c61bfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20, skipping insertion in model container [2021-10-15 19:19:20,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:19:20,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:19:20,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2021-10-15 19:19:20,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:19:20,325 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:19:20,428 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2021-10-15 19:19:20,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:19:20,455 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:19:20,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20 WrapperNode [2021-10-15 19:19:20,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:19:20,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:19:20,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:19:20,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:19:20,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:19:20,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:19:20,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:19:20,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:19:20,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:19:20,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:19:20,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:19:20,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:19:20,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (1/1) ... [2021-10-15 19:19:20,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:19:20,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:19:20,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:19:20,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:19:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:19:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:19:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:19:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:19:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:19:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:19:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:19:21,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:19:21,035 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:19:21,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:19:21 BoogieIcfgContainer [2021-10-15 19:19:21,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:19:21,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:19:21,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:19:21,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:19:21,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:19:20" (1/3) ... [2021-10-15 19:19:21,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fb94af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:19:21, skipping insertion in model container [2021-10-15 19:19:21,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:19:20" (2/3) ... [2021-10-15 19:19:21,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fb94af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:19:21, skipping insertion in model container [2021-10-15 19:19:21,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:19:21" (3/3) ... [2021-10-15 19:19:21,047 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2021-10-15 19:19:21,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:19:21,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:19:21,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:19:21,180 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:19:21,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:19:21,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:19:21,240 INFO L129 PetriNetUnfolder]: 12/40 cut-off events. [2021-10-15 19:19:21,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:21,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 12/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:19:21,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:19:21,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 33 transitions, 66 flow [2021-10-15 19:19:21,270 INFO L129 PetriNetUnfolder]: 10/32 cut-off events. [2021-10-15 19:19:21,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:21,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:21,274 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:21,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2132287054, now seen corresponding path program 1 times [2021-10-15 19:19:21,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:19:21,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619304809] [2021-10-15 19:19:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:21,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:19:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:19:21,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:19:21,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:19:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:19:21,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:21,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:19:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:21,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:19:21,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619304809] [2021-10-15 19:19:21,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619304809] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:19:21,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:19:21,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:19:21,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034864504] [2021-10-15 19:19:21,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:19:21,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:19:21,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:19:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:19:21,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 40 [2021-10-15 19:19:21,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 33 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:21,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:21,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 40 [2021-10-15 19:19:21,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:21,775 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2021-10-15 19:19:21,775 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:21,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 5/28 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-10-15 19:19:21,778 INFO L132 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2021-10-15 19:19:21,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 56 flow [2021-10-15 19:19:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:19:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:19:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 73 transitions. [2021-10-15 19:19:21,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9125 [2021-10-15 19:19:21,794 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 73 transitions. [2021-10-15 19:19:21,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 73 transitions. [2021-10-15 19:19:21,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:21,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 73 transitions. [2021-10-15 19:19:21,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:21,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:21,807 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:21,810 INFO L186 Difference]: Start difference. First operand has 24 places, 33 transitions, 66 flow. Second operand 2 states and 73 transitions. [2021-10-15 19:19:21,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 56 flow [2021-10-15 19:19:21,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:19:21,816 INFO L242 Difference]: Finished difference. Result has 25 places, 28 transitions, 56 flow [2021-10-15 19:19:21,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=28} [2021-10-15 19:19:21,818 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-10-15 19:19:21,819 INFO L470 AbstractCegarLoop]: Abstraction has has 25 places, 28 transitions, 56 flow [2021-10-15 19:19:21,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:21,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:21,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:21,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:19:22,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:19:22,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2021-10-15 19:19:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:19:22,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691958097] [2021-10-15 19:19:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:22,023 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:19:22,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:19:22,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:19:22,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:19:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:22,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:19:22,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:22,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:19:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:22,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:19:22,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691958097] [2021-10-15 19:19:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691958097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:19:22,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:19:22,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:19:22,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687076429] [2021-10-15 19:19:22,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:19:22,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:19:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:19:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:19:22,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2021-10-15 19:19:22,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 28 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:22,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:22,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2021-10-15 19:19:22,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:22,556 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-10-15 19:19:22,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:19:22,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 31 events. 5/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 49. Up to 14 conditions per place. [2021-10-15 19:19:22,558 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 14 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-10-15 19:19:22,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 98 flow [2021-10-15 19:19:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:19:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:19:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2021-10-15 19:19:22,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.575 [2021-10-15 19:19:22,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2021-10-15 19:19:22,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2021-10-15 19:19:22,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:22,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2021-10-15 19:19:22,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:22,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:22,568 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:22,568 INFO L186 Difference]: Start difference. First operand has 25 places, 28 transitions, 56 flow. Second operand 4 states and 92 transitions. [2021-10-15 19:19:22,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 98 flow [2021-10-15 19:19:22,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:19:22,572 INFO L242 Difference]: Finished difference. Result has 31 places, 30 transitions, 82 flow [2021-10-15 19:19:22,573 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2021-10-15 19:19:22,573 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2021-10-15 19:19:22,574 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 82 flow [2021-10-15 19:19:22,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:22,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:22,575 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:22,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:19:22,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:19:22,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 1 times [2021-10-15 19:19:22,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:19:22,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926900644] [2021-10-15 19:19:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:22,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:19:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:19:22,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:19:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:19:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:22,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:19:22,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:23,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:19:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:23,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:19:23,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926900644] [2021-10-15 19:19:23,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926900644] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:19:23,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:19:23,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-15 19:19:23,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252977763] [2021-10-15 19:19:23,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:19:23,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:19:23,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:19:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:19:23,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2021-10-15 19:19:23,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 82 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:23,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:23,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2021-10-15 19:19:23,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:23,984 INFO L129 PetriNetUnfolder]: 9/66 cut-off events. [2021-10-15 19:19:23,984 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:19:23,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 66 events. 9/66 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 136. Up to 12 conditions per place. [2021-10-15 19:19:23,985 INFO L132 encePairwiseOnDemand]: 25/40 looper letters, 24 selfloop transitions, 26 changer transitions 0/58 dead transitions. [2021-10-15 19:19:23,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 256 flow [2021-10-15 19:19:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:19:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:19:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2021-10-15 19:19:23,991 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.465 [2021-10-15 19:19:23,992 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 186 transitions. [2021-10-15 19:19:23,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 186 transitions. [2021-10-15 19:19:23,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:23,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 186 transitions. [2021-10-15 19:19:23,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:23,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:23,998 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:23,999 INFO L186 Difference]: Start difference. First operand has 31 places, 30 transitions, 82 flow. Second operand 10 states and 186 transitions. [2021-10-15 19:19:23,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 256 flow [2021-10-15 19:19:24,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:19:24,013 INFO L242 Difference]: Finished difference. Result has 45 places, 48 transitions, 251 flow [2021-10-15 19:19:24,014 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2021-10-15 19:19:24,014 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2021-10-15 19:19:24,014 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 251 flow [2021-10-15 19:19:24,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:24,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:24,015 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:24,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:19:24,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:19:24,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2021-10-15 19:19:24,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:19:24,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563720523] [2021-10-15 19:19:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:24,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:19:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:19:24,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:19:24,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:19:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:24,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:19:24,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:19:24,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:19:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:19:25,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:19:25,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563720523] [2021-10-15 19:19:25,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563720523] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:19:25,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:19:25,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-15 19:19:25,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258749110] [2021-10-15 19:19:25,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:19:25,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:19:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:19:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:19:25,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2021-10-15 19:19:25,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 18.416666666666668) internal successors, (221), 12 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:25,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:19:25,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2021-10-15 19:19:25,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:19:25,583 INFO L129 PetriNetUnfolder]: 9/69 cut-off events. [2021-10-15 19:19:25,583 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-10-15 19:19:25,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 69 events. 9/69 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 205. Up to 16 conditions per place. [2021-10-15 19:19:25,586 INFO L132 encePairwiseOnDemand]: 33/40 looper letters, 32 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2021-10-15 19:19:25,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 399 flow [2021-10-15 19:19:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:19:25,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:19:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2021-10-15 19:19:25,591 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5 [2021-10-15 19:19:25,591 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 200 transitions. [2021-10-15 19:19:25,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 200 transitions. [2021-10-15 19:19:25,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:19:25,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 200 transitions. [2021-10-15 19:19:25,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:25,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:25,598 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:25,598 INFO L186 Difference]: Start difference. First operand has 45 places, 48 transitions, 251 flow. Second operand 10 states and 200 transitions. [2021-10-15 19:19:25,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 399 flow [2021-10-15 19:19:25,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 394 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 19:19:25,608 INFO L242 Difference]: Finished difference. Result has 56 places, 53 transitions, 302 flow [2021-10-15 19:19:25,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=302, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2021-10-15 19:19:25,609 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 32 predicate places. [2021-10-15 19:19:25,609 INFO L470 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 302 flow [2021-10-15 19:19:25,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.416666666666668) internal successors, (221), 12 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:19:25,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:19:25,610 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:19:25,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:19:25,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:19:25,824 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:19:25,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:19:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 1 times [2021-10-15 19:19:25,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:19:25,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009782332] [2021-10-15 19:19:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:25,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:19:25,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:19:25,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:19:25,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:19:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-15 19:19:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:26,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:26,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-15 19:19:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:27,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:19:27,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-15 19:19:27,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:27,630 INFO L354 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2021-10-15 19:19:27,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 46 [2021-10-15 19:19:27,826 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-15 19:19:27,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-15 19:19:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:28,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:19:39,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-15 19:19:39,989 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:19:39,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 156 [2021-10-15 19:19:40,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-15 19:19:40,067 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:19:40,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-15 19:19:40,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:19:40,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009782332] [2021-10-15 19:19:40,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-15 19:19:40,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [281297498] [2021-10-15 19:19:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:40,999 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-15 19:19:41,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/cvc4 [2021-10-15 19:19:41,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-15 19:19:41,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-15 19:19:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:41,537 WARN L261 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-15 19:19:41,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:41,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-15 19:19:41,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:41,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-15 19:19:42,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:42,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:19:42,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-15 19:19:42,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:42,407 INFO L354 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2021-10-15 19:19:42,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 46 [2021-10-15 19:19:42,488 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-15 19:19:42,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-15 19:19:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:19:42,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:19:51,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 223 [2021-10-15 19:19:51,054 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:19:51,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 755 treesize of output 623 [2021-10-15 19:19:52,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-15 19:19:52,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568448455] [2021-10-15 19:19:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:19:52,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:19:52,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:19:52,527 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:19:52,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-15 19:19:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:19:53,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-15 19:19:53,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:19:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:54,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-15 19:19:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:55,073 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:19:55,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-15 19:19:55,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:19:55,323 INFO L354 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2021-10-15 19:19:55,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 46 [2021-10-15 19:19:55,388 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-15 19:19:55,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-15 19:19:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:19:55,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:20:03,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-15 19:20:03,594 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:20:03,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 156 [2021-10-15 19:20:03,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-15 19:20:03,646 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:20:03,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-15 19:20:03,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-15 19:20:03,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:20:03,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-15 19:20:03,905 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-15 19:20:03,905 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-15 19:20:03,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:20:03,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:20:04,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-15 19:20:04,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-15 19:20:04,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8090f-3670-4c93-835d-06b227ed8948/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:20:04,521 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:20:04,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:20:04 BoogieIcfgContainer [2021-10-15 19:20:04,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:20:04,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:20:04,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:20:04,561 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:20:04,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:19:21" (3/4) ... [2021-10-15 19:20:04,567 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:20:04,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:20:04,569 INFO L168 Benchmark]: Toolchain (without parser) took 44486.28 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 32.7 MB in the beginning and 57.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:20:04,569 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:20:04,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.18 ms. Allocated memory is still 54.5 MB. Free memory was 32.5 MB in the beginning and 37.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:20:04,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.26 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 35.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:20:04,571 INFO L168 Benchmark]: Boogie Preprocessor took 35.60 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 34.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:20:04,571 INFO L168 Benchmark]: RCFGBuilder took 498.16 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.9 MB in the beginning and 51.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:20:04,572 INFO L168 Benchmark]: TraceAbstraction took 43519.50 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 51.3 MB in the beginning and 58.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:20:04,572 INFO L168 Benchmark]: Witness Printer took 8.00 ms. Allocated memory is still 88.1 MB. Free memory was 58.7 MB in the beginning and 57.9 MB in the end (delta: 818.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:20:04,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.18 ms. Allocated memory is still 54.5 MB. Free memory was 32.5 MB in the beginning and 37.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.26 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 35.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.60 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 34.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 498.16 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.9 MB in the beginning and 51.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 43519.50 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 51.3 MB in the beginning and 58.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 8.00 ms. Allocated memory is still 88.1 MB. Free memory was 58.7 MB in the beginning and 57.9 MB in the end (delta: 818.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res & x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bAnd(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res & x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bAnd(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i