./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c --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_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5155bf194b87704056b10d5a9880c1672d045530 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5155bf194b87704056b10d5a9880c1672d045530 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:19:29,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:19:29,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:19:29,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:19:29,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:19:29,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:19:29,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:19:29,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:19:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:19:29,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:19:29,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:19:29,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:19:29,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:19:29,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:19:29,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:19:29,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:19:29,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:19:29,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:19:29,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:19:29,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:19:29,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:19:29,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:19:29,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:19:29,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:19:29,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:19:29,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:19:29,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:19:29,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:19:29,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:19:29,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:19:29,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:19:29,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:19:29,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:19:29,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:19:29,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:19:29,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:19:29,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:19:29,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:19:29,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:19:29,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:19:29,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:19:29,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:19:29,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:19:29,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:19:29,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:19:29,823 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:19:29,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:19:29,824 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:19:29,824 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:19:29,825 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:19:29,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:19:29,826 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:19:29,826 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:19:29,826 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:19:29,827 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:19:29,827 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:19:29,827 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:19:29,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:19:29,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:19:29,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:19:29,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:19:29,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:19:29,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:19:29,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:19:29,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:19:29,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:19:29,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:19:29,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:19:29,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:19:29,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:19:29,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:19:29,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:19:29,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:29,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:19:29,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:19:29,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:19:29,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:19:29,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:19:29,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:19:29,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:19:29,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:19:29,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5155bf194b87704056b10d5a9880c1672d045530 [2021-10-16 02:19:30,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:19:30,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:19:30,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:19:30,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:19:30,293 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:19:30,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2021-10-16 02:19:30,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/be227823e/47cdee18c2f0484bb05adf93c2f24a91/FLAGe912b443b [2021-10-16 02:19:31,126 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:19:31,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2021-10-16 02:19:31,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/be227823e/47cdee18c2f0484bb05adf93c2f24a91/FLAGe912b443b [2021-10-16 02:19:31,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/be227823e/47cdee18c2f0484bb05adf93c2f24a91 [2021-10-16 02:19:31,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:19:31,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:19:31,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:31,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:19:31,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:19:31,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:31" (1/1) ... [2021-10-16 02:19:31,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e909f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:31, skipping insertion in model container [2021-10-16 02:19:31,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:31" (1/1) ... [2021-10-16 02:19:31,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:19:31,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:19:31,895 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_8aee621d-9127-4270-8122-0a0d1ea2d06e/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[45032,45045] [2021-10-16 02:19:31,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:31,916 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:19:32,042 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_8aee621d-9127-4270-8122-0a0d1ea2d06e/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[45032,45045] [2021-10-16 02:19:32,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:32,074 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:19:32,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32 WrapperNode [2021-10-16 02:19:32,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:32,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:32,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:19:32,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:19:32,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:32,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:19:32,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:19:32,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:19:32,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:19:32,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:19:32,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:19:32,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:19:32,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (1/1) ... [2021-10-16 02:19:32,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:32,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:32,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:19:32,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:19:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:19:32,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:19:32,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:19:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:19:32,584 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:19:33,507 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:19:33,507 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:19:33,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:19:33,925 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:19:33,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:33 BoogieIcfgContainer [2021-10-16 02:19:33,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:19:33,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:19:33,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:19:33,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:19:33,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:19:31" (1/3) ... [2021-10-16 02:19:33,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3873439b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:33, skipping insertion in model container [2021-10-16 02:19:33,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:32" (2/3) ... [2021-10-16 02:19:33,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3873439b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:33, skipping insertion in model container [2021-10-16 02:19:33,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:33" (3/3) ... [2021-10-16 02:19:33,943 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2021-10-16 02:19:33,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:19:33,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:19:34,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:19:34,048 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=FINITE_AUTOMATA, 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 [2021-10-16 02:19:34,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:19:34,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 113 states have internal predecessors, (199), 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) [2021-10-16 02:19:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:19:34,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:34,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:34,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:34,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash -498136991, now seen corresponding path program 1 times [2021-10-16 02:19:34,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:34,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688029988] [2021-10-16 02:19:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:34,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:34,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:34,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688029988] [2021-10-16 02:19:34,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688029988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:34,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:34,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:19:34,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184788756] [2021-10-16 02:19:34,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:19:34,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:19:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:19:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:34,503 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 113 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-16 02:19:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:34,660 INFO L93 Difference]: Finished difference Result 250 states and 435 transitions. [2021-10-16 02:19:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:34,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 02:19:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:34,672 INFO L225 Difference]: With dead ends: 250 [2021-10-16 02:19:34,672 INFO L226 Difference]: Without dead ends: 132 [2021-10-16 02:19:34,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-16 02:19:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-10-16 02:19:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.496124031007752) internal successors, (193), 129 states have internal predecessors, (193), 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) [2021-10-16 02:19:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 193 transitions. [2021-10-16 02:19:34,718 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 193 transitions. Word has length 19 [2021-10-16 02:19:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:34,718 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 193 transitions. [2021-10-16 02:19:34,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-16 02:19:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 193 transitions. [2021-10-16 02:19:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:19:34,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:34,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:34,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:19:34,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:34,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1206563838, now seen corresponding path program 1 times [2021-10-16 02:19:34,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:34,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213774859] [2021-10-16 02:19:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:34,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:34,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:34,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213774859] [2021-10-16 02:19:34,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213774859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:34,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:34,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:19:34,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517138139] [2021-10-16 02:19:34,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:34,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:19:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:34,796 INFO L87 Difference]: Start difference. First operand 130 states and 193 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-16 02:19:34,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:34,926 INFO L93 Difference]: Finished difference Result 271 states and 401 transitions. [2021-10-16 02:19:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:19:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:19:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:34,928 INFO L225 Difference]: With dead ends: 271 [2021-10-16 02:19:34,928 INFO L226 Difference]: Without dead ends: 143 [2021-10-16 02:19:34,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:19:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-16 02:19:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2021-10-16 02:19:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.488888888888889) internal successors, (201), 135 states have internal predecessors, (201), 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) [2021-10-16 02:19:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 201 transitions. [2021-10-16 02:19:34,941 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 201 transitions. Word has length 24 [2021-10-16 02:19:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:34,942 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 201 transitions. [2021-10-16 02:19:34,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-16 02:19:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 201 transitions. [2021-10-16 02:19:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 02:19:34,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:34,944 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:34,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:19:34,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1463975664, now seen corresponding path program 1 times [2021-10-16 02:19:34,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:34,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832495526] [2021-10-16 02:19:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:34,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:35,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:35,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832495526] [2021-10-16 02:19:35,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832495526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:35,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:35,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:19:35,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158462924] [2021-10-16 02:19:35,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:19:35,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:19:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:19:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:35,005 INFO L87 Difference]: Start difference. First operand 136 states and 201 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-10-16 02:19:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:35,179 INFO L93 Difference]: Finished difference Result 324 states and 494 transitions. [2021-10-16 02:19:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-16 02:19:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:35,181 INFO L225 Difference]: With dead ends: 324 [2021-10-16 02:19:35,181 INFO L226 Difference]: Without dead ends: 178 [2021-10-16 02:19:35,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-16 02:19:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2021-10-16 02:19:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4597701149425288) internal successors, (254), 174 states have internal predecessors, (254), 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) [2021-10-16 02:19:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 254 transitions. [2021-10-16 02:19:35,194 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 254 transitions. Word has length 34 [2021-10-16 02:19:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:35,194 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 254 transitions. [2021-10-16 02:19:35,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-10-16 02:19:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 254 transitions. [2021-10-16 02:19:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-16 02:19:35,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:35,197 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:35,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:19:35,197 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:35,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1752669337, now seen corresponding path program 1 times [2021-10-16 02:19:35,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:35,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959026470] [2021-10-16 02:19:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:35,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:35,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:35,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959026470] [2021-10-16 02:19:35,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959026470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:19:35,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989203860] [2021-10-16 02:19:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:35,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:35,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:35,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:35,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:19:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:35,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:19:35,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:35,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:35,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989203860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:35,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [887803037] [2021-10-16 02:19:35,857 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-10-16 02:19:35,857 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:19:35,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:19:35,867 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:19:35,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:19:36,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,015 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:19:36,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:19:36,019 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:19:36,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:19:36,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 394 [2021-10-16 02:19:36,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,205 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:19:36,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 02:19:36,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:19:36,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:19:36,218 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:19:36,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,321 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:19:36,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 02:19:36,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:19:36,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:19:36,331 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:19:36,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:36,411 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:19:36,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 02:19:36,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:19:36,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:19:36,418 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:19:36,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:19:36,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:36,731 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-16 02:19:36,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1047 [2021-10-16 02:19:36,829 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 02:19:36,830 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1113, output treesize:1047 [2021-10-16 02:19:36,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:37,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:37,054 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_17| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:19:37,057 INFO L168 Benchmark]: Toolchain (without parser) took 5639.40 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 59.3 MB in the beginning and 51.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:37,057 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory was 63.7 MB in the beginning and 63.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:37,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.54 ms. Allocated memory is still 94.4 MB. Free memory was 59.1 MB in the beginning and 65.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:37,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.85 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 62.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:37,059 INFO L168 Benchmark]: Boogie Preprocessor took 63.49 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 60.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:37,060 INFO L168 Benchmark]: RCFGBuilder took 1693.86 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 60.2 MB in the beginning and 62.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:37,061 INFO L168 Benchmark]: TraceAbstraction took 3122.57 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 62.1 MB in the beginning and 51.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:37,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory was 63.7 MB in the beginning and 63.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 648.54 ms. Allocated memory is still 94.4 MB. Free memory was 59.1 MB in the beginning and 65.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.85 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 62.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.49 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 60.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1693.86 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 60.2 MB in the beginning and 62.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3122.57 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 62.1 MB in the beginning and 51.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_17| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_17|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:19:37,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:19:39,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:19:39,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:19:39,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:19:39,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:19:39,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:19:39,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:19:39,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:19:39,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:19:39,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:19:39,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:19:39,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:19:39,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:19:39,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:19:39,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:19:39,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:19:39,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:19:39,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:19:39,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:19:39,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:19:39,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:19:39,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:19:39,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:19:39,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:19:39,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:19:39,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:19:39,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:19:39,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:19:39,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:19:39,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:19:39,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:19:39,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:19:39,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:19:39,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:19:39,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:19:39,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:19:39,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:19:39,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:19:39,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:19:39,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:19:39,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:19:39,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:19:39,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:19:39,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:19:39,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:19:39,705 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:19:39,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:19:39,706 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:19:39,706 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:19:39,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:19:39,707 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:19:39,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:19:39,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:19:39,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:19:39,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:19:39,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:19:39,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:19:39,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:19:39,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:19:39,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:19:39,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:19:39,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:19:39,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:19:39,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:19:39,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:19:39,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:19:39,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:19:39,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:19:39,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:39,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:19:39,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:19:39,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:19:39,714 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:19:39,714 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:19:39,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:19:39,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:19:39,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:19:39,715 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5155bf194b87704056b10d5a9880c1672d045530 [2021-10-16 02:19:40,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:19:40,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:19:40,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:19:40,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:19:40,129 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:19:40,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2021-10-16 02:19:40,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/a280a5bad/13fe2e6389d649f4a59c68e1654124b8/FLAGaea8db326 [2021-10-16 02:19:40,864 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:19:40,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2021-10-16 02:19:40,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/a280a5bad/13fe2e6389d649f4a59c68e1654124b8/FLAGaea8db326 [2021-10-16 02:19:41,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/data/a280a5bad/13fe2e6389d649f4a59c68e1654124b8 [2021-10-16 02:19:41,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:19:41,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:19:41,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:41,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:19:41,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:19:41,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dce8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41, skipping insertion in model container [2021-10-16 02:19:41,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:19:41,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:19:41,562 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_8aee621d-9127-4270-8122-0a0d1ea2d06e/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[45032,45045] [2021-10-16 02:19:41,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:41,599 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:19:41,710 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_8aee621d-9127-4270-8122-0a0d1ea2d06e/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c[45032,45045] [2021-10-16 02:19:41,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:41,733 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:19:41,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41 WrapperNode [2021-10-16 02:19:41,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:41,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:41,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:19:41,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:19:41,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:41,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:19:41,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:19:41,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:19:41,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:19:41,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:19:41,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:19:41,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:19:41,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (1/1) ... [2021-10-16 02:19:41,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:41,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:19:41,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:19:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:19:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:19:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:19:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:19:42,282 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:19:43,212 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:19:43,223 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:19:43,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:19:43,238 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:19:43,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:43 BoogieIcfgContainer [2021-10-16 02:19:43,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:19:43,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:19:43,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:19:43,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:19:43,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:19:41" (1/3) ... [2021-10-16 02:19:43,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788d93dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:43, skipping insertion in model container [2021-10-16 02:19:43,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:41" (2/3) ... [2021-10-16 02:19:43,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788d93dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:43, skipping insertion in model container [2021-10-16 02:19:43,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:43" (3/3) ... [2021-10-16 02:19:43,260 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2021-10-16 02:19:43,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:19:43,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:19:43,340 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:19:43,352 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=FINITE_AUTOMATA, 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 [2021-10-16 02:19:43,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:19:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7417218543046358) internal successors, (263), 152 states have internal predecessors, (263), 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) [2021-10-16 02:19:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:19:43,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:43,426 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:43,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:43,435 INFO L82 PathProgramCache]: Analyzing trace with hash -651780530, now seen corresponding path program 1 times [2021-10-16 02:19:43,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:43,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493566287] [2021-10-16 02:19:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:43,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:43,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:43,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:19:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:43,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:19:43,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:43,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:44,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:44,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493566287] [2021-10-16 02:19:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493566287] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:44,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:44,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:19:44,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371364294] [2021-10-16 02:19:44,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:44,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:44,053 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7417218543046358) internal successors, (263), 152 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-10-16 02:19:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:44,450 INFO L93 Difference]: Finished difference Result 356 states and 609 transitions. [2021-10-16 02:19:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:19:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:44,473 INFO L225 Difference]: With dead ends: 356 [2021-10-16 02:19:44,473 INFO L226 Difference]: Without dead ends: 184 [2021-10-16 02:19:44,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-16 02:19:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2021-10-16 02:19:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.550561797752809) internal successors, (276), 178 states have internal predecessors, (276), 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) [2021-10-16 02:19:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 276 transitions. [2021-10-16 02:19:44,540 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 276 transitions. Word has length 26 [2021-10-16 02:19:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:44,540 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 276 transitions. [2021-10-16 02:19:44,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-10-16 02:19:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 276 transitions. [2021-10-16 02:19:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:19:44,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:44,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:44,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:44,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:44,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1026970664, now seen corresponding path program 1 times [2021-10-16 02:19:44,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:44,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675950719] [2021-10-16 02:19:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:44,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:44,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:44,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:19:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:44,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:19:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:44,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:45,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:45,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675950719] [2021-10-16 02:19:45,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675950719] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:45,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:45,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:19:45,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426320806] [2021-10-16 02:19:45,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:19:45,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:19:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:19:45,061 INFO L87 Difference]: Start difference. First operand 179 states and 276 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-10-16 02:19:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:45,543 INFO L93 Difference]: Finished difference Result 600 states and 929 transitions. [2021-10-16 02:19:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:19:45,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:19:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:45,550 INFO L225 Difference]: With dead ends: 600 [2021-10-16 02:19:45,550 INFO L226 Difference]: Without dead ends: 429 [2021-10-16 02:19:45,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:19:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-16 02:19:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 362. [2021-10-16 02:19:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.5623268698060941) internal successors, (564), 361 states have internal predecessors, (564), 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) [2021-10-16 02:19:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 564 transitions. [2021-10-16 02:19:45,596 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 564 transitions. Word has length 30 [2021-10-16 02:19:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:45,597 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 564 transitions. [2021-10-16 02:19:45,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-10-16 02:19:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 564 transitions. [2021-10-16 02:19:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-16 02:19:45,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:45,601 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-10-16 02:19:45,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:19:45,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:45,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:45,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:45,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1531549699, now seen corresponding path program 1 times [2021-10-16 02:19:45,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:45,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153014733] [2021-10-16 02:19:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:45,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:45,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:45,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:19:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:45,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:45,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:46,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:46,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:46,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153014733] [2021-10-16 02:19:46,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153014733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:46,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:46,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:19:46,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101129150] [2021-10-16 02:19:46,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:19:46,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:19:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:46,198 INFO L87 Difference]: Start difference. First operand 362 states and 564 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-10-16 02:19:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:46,403 INFO L93 Difference]: Finished difference Result 764 states and 1188 transitions. [2021-10-16 02:19:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:46,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-16 02:19:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:46,409 INFO L225 Difference]: With dead ends: 764 [2021-10-16 02:19:46,410 INFO L226 Difference]: Without dead ends: 398 [2021-10-16 02:19:46,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-16 02:19:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 390. [2021-10-16 02:19:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5398457583547558) internal successors, (599), 389 states have internal predecessors, (599), 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) [2021-10-16 02:19:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 599 transitions. [2021-10-16 02:19:46,483 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 599 transitions. Word has length 50 [2021-10-16 02:19:46,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:46,484 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 599 transitions. [2021-10-16 02:19:46,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-10-16 02:19:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 599 transitions. [2021-10-16 02:19:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-16 02:19:46,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:46,499 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-10-16 02:19:46,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:46,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:46,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:46,722 INFO L82 PathProgramCache]: Analyzing trace with hash 694086665, now seen corresponding path program 1 times [2021-10-16 02:19:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:46,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967948458] [2021-10-16 02:19:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:46,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:46,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:46,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:19:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:46,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:46,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:19:47,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:19:47,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:47,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967948458] [2021-10-16 02:19:47,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967948458] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:47,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:47,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:19:47,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025084453] [2021-10-16 02:19:47,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:47,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:47,400 INFO L87 Difference]: Start difference. First operand 390 states and 599 transitions. Second operand has 4 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) [2021-10-16 02:19:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:47,876 INFO L93 Difference]: Finished difference Result 919 states and 1437 transitions. [2021-10-16 02:19:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 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) Word has length 72 [2021-10-16 02:19:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:47,884 INFO L225 Difference]: With dead ends: 919 [2021-10-16 02:19:47,888 INFO L226 Difference]: Without dead ends: 537 [2021-10-16 02:19:47,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-10-16 02:19:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 505. [2021-10-16 02:19:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.5198412698412698) internal successors, (766), 504 states have internal predecessors, (766), 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) [2021-10-16 02:19:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 766 transitions. [2021-10-16 02:19:47,937 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 766 transitions. Word has length 72 [2021-10-16 02:19:47,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:47,942 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 766 transitions. [2021-10-16 02:19:47,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-10-16 02:19:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 766 transitions. [2021-10-16 02:19:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-16 02:19:47,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:47,951 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-10-16 02:19:47,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:48,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:48,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:48,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1005957392, now seen corresponding path program 1 times [2021-10-16 02:19:48,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:48,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157744162] [2021-10-16 02:19:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:48,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:48,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:48,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:48,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:19:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:48,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:48,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:19:48,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:19:48,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:48,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157744162] [2021-10-16 02:19:48,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157744162] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:48,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:48,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:19:48,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365005017] [2021-10-16 02:19:48,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:19:48,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:19:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:48,879 INFO L87 Difference]: Start difference. First operand 505 states and 766 transitions. 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) [2021-10-16 02:19:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:49,149 INFO L93 Difference]: Finished difference Result 1042 states and 1585 transitions. [2021-10-16 02:19:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:49,150 INFO L78 Accepts]: Start accepts. 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) Word has length 73 [2021-10-16 02:19:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:49,154 INFO L225 Difference]: With dead ends: 1042 [2021-10-16 02:19:49,154 INFO L226 Difference]: Without dead ends: 545 [2021-10-16 02:19:49,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-10-16 02:19:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 535. [2021-10-16 02:19:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.5056179775280898) internal successors, (804), 534 states have internal predecessors, (804), 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) [2021-10-16 02:19:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 804 transitions. [2021-10-16 02:19:49,188 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 804 transitions. Word has length 73 [2021-10-16 02:19:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:49,190 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 804 transitions. [2021-10-16 02:19:49,191 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) [2021-10-16 02:19:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 804 transitions. [2021-10-16 02:19:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-16 02:19:49,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:49,194 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:49,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:49,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:49,411 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash 918484626, now seen corresponding path program 1 times [2021-10-16 02:19:49,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:49,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887545183] [2021-10-16 02:19:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:49,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:49,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:49,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:49,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:19:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:49,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:49,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-16 02:19:49,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-16 02:19:50,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:50,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887545183] [2021-10-16 02:19:50,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887545183] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:50,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:50,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:19:50,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265886821] [2021-10-16 02:19:50,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:19:50,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:19:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:50,129 INFO L87 Difference]: Start difference. First operand 535 states and 804 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-10-16 02:19:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:50,311 INFO L93 Difference]: Finished difference Result 1105 states and 1672 transitions. [2021-10-16 02:19:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-16 02:19:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:50,317 INFO L225 Difference]: With dead ends: 1105 [2021-10-16 02:19:50,317 INFO L226 Difference]: Without dead ends: 559 [2021-10-16 02:19:50,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-10-16 02:19:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 545. [2021-10-16 02:19:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.4852941176470589) internal successors, (808), 544 states have internal predecessors, (808), 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) [2021-10-16 02:19:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 808 transitions. [2021-10-16 02:19:50,350 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 808 transitions. Word has length 95 [2021-10-16 02:19:50,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:50,350 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 808 transitions. [2021-10-16 02:19:50,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-10-16 02:19:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 808 transitions. [2021-10-16 02:19:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 02:19:50,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:50,353 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:50,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:50,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:50,567 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:50,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1209412422, now seen corresponding path program 1 times [2021-10-16 02:19:50,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:50,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593761760] [2021-10-16 02:19:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:50,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:50,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:50,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:19:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:50,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:50,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-16 02:19:51,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-16 02:19:51,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:51,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593761760] [2021-10-16 02:19:51,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593761760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:51,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:51,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:19:51,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930247309] [2021-10-16 02:19:51,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:51,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:51,415 INFO L87 Difference]: Start difference. First operand 545 states and 808 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-10-16 02:19:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:51,496 INFO L93 Difference]: Finished difference Result 2126 states and 3140 transitions. [2021-10-16 02:19:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:51,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-16 02:19:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:51,510 INFO L225 Difference]: With dead ends: 2126 [2021-10-16 02:19:51,511 INFO L226 Difference]: Without dead ends: 1589 [2021-10-16 02:19:51,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-10-16 02:19:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 547. [2021-10-16 02:19:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.4835164835164836) internal successors, (810), 546 states have internal predecessors, (810), 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) [2021-10-16 02:19:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 810 transitions. [2021-10-16 02:19:51,564 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 810 transitions. Word has length 101 [2021-10-16 02:19:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:51,564 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 810 transitions. [2021-10-16 02:19:51,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-10-16 02:19:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 810 transitions. [2021-10-16 02:19:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 02:19:51,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:51,567 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:51,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:51,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:51,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -70451256, now seen corresponding path program 1 times [2021-10-16 02:19:51,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:51,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512937493] [2021-10-16 02:19:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:51,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:51,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:51,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:19:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:52,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:52,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-16 02:19:52,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-16 02:19:52,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:52,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512937493] [2021-10-16 02:19:52,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512937493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:52,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:52,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:19:52,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053778193] [2021-10-16 02:19:52,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:52,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:52,647 INFO L87 Difference]: Start difference. First operand 547 states and 810 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-10-16 02:19:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:52,731 INFO L93 Difference]: Finished difference Result 1605 states and 2370 transitions. [2021-10-16 02:19:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-16 02:19:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:52,742 INFO L225 Difference]: With dead ends: 1605 [2021-10-16 02:19:52,742 INFO L226 Difference]: Without dead ends: 1066 [2021-10-16 02:19:52,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-16 02:19:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 984. [2021-10-16 02:19:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 1.491353001017294) internal successors, (1466), 983 states have internal predecessors, (1466), 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) [2021-10-16 02:19:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1466 transitions. [2021-10-16 02:19:52,810 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1466 transitions. Word has length 101 [2021-10-16 02:19:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:52,811 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1466 transitions. [2021-10-16 02:19:52,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-10-16 02:19:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1466 transitions. [2021-10-16 02:19:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-16 02:19:52,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:52,814 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:52,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-16 02:19:53,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:53,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:53,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:53,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1334267025, now seen corresponding path program 1 times [2021-10-16 02:19:53,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:53,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218364590] [2021-10-16 02:19:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:53,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:53,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:53,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:19:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:53,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:19:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-16 02:19:53,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-16 02:19:54,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:54,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218364590] [2021-10-16 02:19:54,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218364590] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:54,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:54,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:19:54,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743763085] [2021-10-16 02:19:54,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:54,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:54,092 INFO L87 Difference]: Start difference. First operand 984 states and 1466 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2021-10-16 02:19:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:54,327 INFO L93 Difference]: Finished difference Result 3457 states and 5146 transitions. [2021-10-16 02:19:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:54,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-16 02:19:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:54,347 INFO L225 Difference]: With dead ends: 3457 [2021-10-16 02:19:54,347 INFO L226 Difference]: Without dead ends: 2481 [2021-10-16 02:19:54,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-10-16 02:19:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2479. [2021-10-16 02:19:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 2478 states have (on average 1.4749798224374495) internal successors, (3655), 2478 states have internal predecessors, (3655), 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) [2021-10-16 02:19:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3655 transitions. [2021-10-16 02:19:54,512 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3655 transitions. Word has length 102 [2021-10-16 02:19:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:54,512 INFO L470 AbstractCegarLoop]: Abstraction has 2479 states and 3655 transitions. [2021-10-16 02:19:54,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2021-10-16 02:19:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3655 transitions. [2021-10-16 02:19:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-16 02:19:54,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:54,515 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:54,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-16 02:19:54,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:54,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash 747461011, now seen corresponding path program 1 times [2021-10-16 02:19:54,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:54,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061985949] [2021-10-16 02:19:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:54,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:54,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:54,731 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:54,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:19:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:19:55,184 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:19:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:19:55,456 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:19:55,456 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:19:55,457 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:19:55,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:55,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:55,692 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:19:55,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:19:55 BoogieIcfgContainer [2021-10-16 02:19:55,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:19:55,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:19:55,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:19:55,850 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:19:55,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:43" (3/4) ... [2021-10-16 02:19:55,856 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:19:56,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:19:56,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:19:56,027 INFO L168 Benchmark]: Toolchain (without parser) took 14854.40 ms. Allocated memory was 52.4 MB in the beginning and 146.8 MB in the end (delta: 94.4 MB). Free memory was 28.2 MB in the beginning and 84.0 MB in the end (delta: -55.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,028 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 32.6 MB in the beginning and 32.5 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:56,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 560.71 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.0 MB in the beginning and 50.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.22 ms. Allocated memory is still 71.3 MB. Free memory was 50.4 MB in the beginning and 47.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,030 INFO L168 Benchmark]: Boogie Preprocessor took 123.11 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 45.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,031 INFO L168 Benchmark]: RCFGBuilder took 1299.46 ms. Allocated memory is still 71.3 MB. Free memory was 45.4 MB in the beginning and 50.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,031 INFO L168 Benchmark]: TraceAbstraction took 12603.93 ms. Allocated memory was 71.3 MB in the beginning and 146.8 MB in the end (delta: 75.5 MB). Free memory was 50.0 MB in the beginning and 94.5 MB in the end (delta: -44.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,032 INFO L168 Benchmark]: Witness Printer took 175.10 ms. Allocated memory is still 146.8 MB. Free memory was 94.5 MB in the beginning and 84.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:56,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 32.6 MB in the beginning and 32.5 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 560.71 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.0 MB in the beginning and 50.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.22 ms. Allocated memory is still 71.3 MB. Free memory was 50.4 MB in the beginning and 47.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.11 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 45.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1299.46 ms. Allocated memory is still 71.3 MB. Free memory was 45.4 MB in the beginning and 50.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12603.93 ms. Allocated memory was 71.3 MB in the beginning and 146.8 MB in the end (delta: 75.5 MB). Free memory was 50.0 MB in the beginning and 94.5 MB in the end (delta: -44.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 175.10 ms. Allocated memory is still 146.8 MB. Free memory was 94.5 MB in the beginning and 84.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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 - CounterExampleResult [Line: 654]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L659] int s ; [L660] int tmp ; [L664] s = 8464 [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__hit = __VERIFIER_nondet_int() ; [L32] int s__rwstate ; [L33] int s__init_buf___0 = 1; [L34] int s__debug = __VERIFIER_nondet_int() ; [L35] int s__shutdown ; [L36] int s__cert = __VERIFIER_nondet_int() ; [L37] int s__options = __VERIFIER_nondet_int() ; [L38] int s__verify_mode = __VERIFIER_nondet_int() ; [L39] int s__session__peer = __VERIFIER_nondet_int() ; [L40] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L41] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L45] int s__s3__tmp__cert_request ; [L46] int s__s3__tmp__reuse_message ; [L47] int s__s3__tmp__use_rsa_tmp ; [L48] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher__algorithms ; [L50] int s__s3__tmp__next_state___0 ; [L51] int s__s3__tmp__new_cipher__algo_strength ; [L52] int s__session__cipher ; [L53] int buf ; [L54] unsigned long l ; [L55] unsigned long Time ; [L56] unsigned long tmp ; [L57] int cb ; [L58] long num1 = __VERIFIER_nondet_long() ; [L59] int ret ; [L60] int new_state ; [L61] int state ; [L62] int skip ; [L63] int got_new_session ; [L64] int tmp___1 = __VERIFIER_nondet_int() ; [L65] int tmp___2 = __VERIFIER_nondet_int() ; [L66] int tmp___3 = __VERIFIER_nondet_int() ; [L67] int tmp___4 = __VERIFIER_nondet_int() ; [L68] int tmp___5 = __VERIFIER_nondet_int() ; [L69] int tmp___6 = __VERIFIER_nondet_int() ; [L70] int tmp___7 = __VERIFIER_nondet_int() ; [L71] long tmp___8 = __VERIFIER_nondet_long() ; [L72] int tmp___9 = __VERIFIER_nondet_int() ; [L73] int tmp___10 = __VERIFIER_nondet_int() ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] unsigned long __cil_tmp57 ; [L78] unsigned long __cil_tmp58 ; [L79] unsigned long __cil_tmp59 ; [L80] int __cil_tmp60 ; [L81] unsigned long __cil_tmp61 ; [L84] s__state = initial_state [L85] blastFlag = 0 [L86] tmp = __VERIFIER_nondet_int() [L87] Time = tmp [L88] cb = 0 [L89] ret = -1 [L90] skip = 0 [L91] got_new_session = 0 [L92] COND TRUE s__info_callback != 0 [L93] cb = s__info_callback [L99] s__in_handshake ++ [L100] COND FALSE !(tmp___1 + 12288) [L105] COND FALSE !(s__cert == 0) [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND TRUE s__state == 8464 [L282] s__shutdown = 0 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 0 [L285] blastFlag = 1 [L287] COND FALSE !(ret <= 0) [L290] got_new_session = 1 [L291] s__state = 8496 [L292] s__init_num = 0 [L611] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L612] COND FALSE !(! s__s3__tmp__reuse_message) [L643] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND TRUE s__state == 8496 [L296] ret = __VERIFIER_nondet_int() [L297] COND TRUE blastFlag == 1 [L298] blastFlag = 2 [L300] COND FALSE !(ret <= 0) [L303] COND FALSE !(\read(s__hit)) [L306] s__state = 8512 [L308] s__init_num = 0 [L611] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L612] COND FALSE !(! s__s3__tmp__reuse_message) [L643] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND TRUE s__state == 8512 [L313] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L314] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L315] COND TRUE __cil_tmp56 + 256UL [L316] skip = 1 [L327] s__state = 8528 [L328] s__init_num = 0 [L611] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L612] COND FALSE !(! s__s3__tmp__reuse_message) [L643] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND TRUE s__state == 8528 [L332] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L333] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L335] __cil_tmp57 = (unsigned long )s__options [L336] COND TRUE __cil_tmp57 + 2097152UL [L337] s__s3__tmp__use_rsa_tmp = 1 [L342] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L369] ret = __VERIFIER_nondet_int() [L370] COND FALSE !(blastFlag == 6) [L373] COND FALSE !(ret <= 0) [L390] s__state = 8544 [L391] s__init_num = 0 [L611] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L612] COND TRUE ! s__s3__tmp__reuse_message [L613] COND TRUE ! skip [L614] COND TRUE state == 8528 [L615] COND TRUE s__state == 8544 [L616] COND TRUE tmp___7 != 1024 [L617] COND TRUE tmp___7 != 512 [L618] COND TRUE __cil_tmp58 != 4294967294 [L619] COND TRUE l != 4294967266 [L654] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 153 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12354.4ms, OverallIterations: 10, TraceHistogramMax: 4, EmptinessCheckTime: 75.5ms, AutomataDifference: 2600.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2327 SDtfs, 2438 SDslu, 2166 SDs, 0 SdLazy, 1113 SolverSat, 280 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1336.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1286 GetRequests, 1265 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 95.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2479occurred in iteration=9, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 540.5ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1262 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 182.2ms SsaConstructionTime, 395.8ms SatisfiabilityAnalysisTime, 4094.3ms InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1282 ConstructedInterpolants, 0 QuantifiedInterpolants, 2073 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1020 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 902/902 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:19:56,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aee621d-9127-4270-8122-0a0d1ea2d06e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...