./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.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_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/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_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/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_e1235e00-5190-4b64-bb15-91f37d31e956/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 91a67b7fcd329c9ac7337e680d26328053f26df8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/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_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/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_e1235e00-5190-4b64-bb15-91f37d31e956/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 91a67b7fcd329c9ac7337e680d26328053f26df8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:43:35,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:43:35,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:43:35,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:43:35,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:43:35,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:43:36,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:43:36,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:43:36,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:43:36,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:43:36,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:43:36,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:43:36,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:43:36,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:43:36,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:43:36,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:43:36,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:43:36,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:43:36,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:43:36,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:43:36,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:43:36,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:43:36,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:43:36,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:43:36,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:43:36,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:43:36,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:43:36,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:43:36,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:43:36,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:43:36,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:43:36,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:43:36,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:43:36,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:43:36,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:43:36,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:43:36,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:43:36,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:43:36,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:43:36,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:43:36,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:43:36,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:43:36,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:43:36,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:43:36,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:43:36,122 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:43:36,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:43:36,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:43:36,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:43:36,137 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:43:36,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:43:36,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:43:36,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:43:36,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:43:36,139 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:43:36,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:43:36,139 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:43:36,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:43:36,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:43:36,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:43:36,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:43:36,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:43:36,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:43:36,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:43:36,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:43:36,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:43:36,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:43:36,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:43:36,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:43:36,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:43:36,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:43:36,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:43:36,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:43:36,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:43:36,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:43:36,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:43:36,144 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:43:36,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:43:36,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:43:36,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:43:36,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:43:36,145 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_e1235e00-5190-4b64-bb15-91f37d31e956/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91a67b7fcd329c9ac7337e680d26328053f26df8 [2021-10-16 02:43:36,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:43:36,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:43:36,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:43:36,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:43:36,465 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:43:36,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-16 02:43:36,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/1a0917ea3/9352899686e64446955f0c92b799343f/FLAG041f448ae [2021-10-16 02:43:36,998 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:43:36,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-16 02:43:37,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/1a0917ea3/9352899686e64446955f0c92b799343f/FLAG041f448ae [2021-10-16 02:43:37,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/1a0917ea3/9352899686e64446955f0c92b799343f [2021-10-16 02:43:37,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:43:37,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:43:37,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:43:37,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:43:37,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:43:37,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f43689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37, skipping insertion in model container [2021-10-16 02:43:37,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:43:37,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:43:37,679 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_e1235e00-5190-4b64-bb15-91f37d31e956/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42848,42861] [2021-10-16 02:43:37,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:43:37,695 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:43:37,752 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_e1235e00-5190-4b64-bb15-91f37d31e956/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42848,42861] [2021-10-16 02:43:37,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:43:37,769 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:43:37,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37 WrapperNode [2021-10-16 02:43:37,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:43:37,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:43:37,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:43:37,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:43:37,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:43:37,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:43:37,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:43:37,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:43:37,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:43:37,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:43:37,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:43:37,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:43:37,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (1/1) ... [2021-10-16 02:43:37,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:43:37,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:37,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:43:37,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:43:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:43:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:43:37,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:43:37,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:43:38,119 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:43:38,716 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:43:38,716 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:43:39,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:43:39,065 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:43:39,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:39 BoogieIcfgContainer [2021-10-16 02:43:39,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:43:39,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:43:39,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:43:39,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:43:39,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:43:37" (1/3) ... [2021-10-16 02:43:39,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d02f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:43:39, skipping insertion in model container [2021-10-16 02:43:39,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:37" (2/3) ... [2021-10-16 02:43:39,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d02f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:43:39, skipping insertion in model container [2021-10-16 02:43:39,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:39" (3/3) ... [2021-10-16 02:43:39,077 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c [2021-10-16 02:43:39,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:43:39,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:43:39,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:43:39,175 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 02:43:39,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:43:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 02:43:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:43:39,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:39,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:39,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1369161449, now seen corresponding path program 1 times [2021-10-16 02:43:39,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:39,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123394675] [2021-10-16 02:43:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:39,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:39,435 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 02:43:39,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:39,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123394675] [2021-10-16 02:43:39,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123394675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:39,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:39,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:43:39,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217679021] [2021-10-16 02:43:39,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:39,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:39,462 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 13.0) internal successors, (39), 2 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 02:43:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:39,634 INFO L93 Difference]: Finished difference Result 231 states and 400 transitions. [2021-10-16 02:43:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:39,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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 39 [2021-10-16 02:43:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:39,646 INFO L225 Difference]: With dead ends: 231 [2021-10-16 02:43:39,646 INFO L226 Difference]: Without dead ends: 121 [2021-10-16 02:43:39,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-16 02:43:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-10-16 02:43:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 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 02:43:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2021-10-16 02:43:39,695 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 39 [2021-10-16 02:43:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:39,696 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2021-10-16 02:43:39,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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 02:43:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2021-10-16 02:43:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 02:43:39,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:39,699 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-10-16 02:43:39,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:43:39,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:39,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1884499230, now seen corresponding path program 1 times [2021-10-16 02:43:39,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:39,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434601297] [2021-10-16 02:43:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:39,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:39,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:39,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434601297] [2021-10-16 02:43:39,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434601297] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:39,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:39,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:43:39,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285121782] [2021-10-16 02:43:39,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:39,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:39,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:39,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:39,848 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 02:43:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:40,033 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2021-10-16 02:43:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 53 [2021-10-16 02:43:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:40,039 INFO L225 Difference]: With dead ends: 257 [2021-10-16 02:43:40,039 INFO L226 Difference]: Without dead ends: 140 [2021-10-16 02:43:40,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-16 02:43:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-10-16 02:43:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 states have internal predecessors, (196), 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 02:43:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2021-10-16 02:43:40,062 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 53 [2021-10-16 02:43:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:40,062 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2021-10-16 02:43:40,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 02:43:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2021-10-16 02:43:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-16 02:43:40,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:40,065 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-10-16 02:43:40,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:43:40,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:40,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1493300429, now seen corresponding path program 1 times [2021-10-16 02:43:40,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:40,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326761817] [2021-10-16 02:43:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:40,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:43:40,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:40,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326761817] [2021-10-16 02:43:40,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326761817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:40,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:40,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:43:40,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035230037] [2021-10-16 02:43:40,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:43:40,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:43:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:40,229 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:43:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:40,442 INFO L93 Difference]: Finished difference Result 319 states and 470 transitions. [2021-10-16 02:43:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:43:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 70 [2021-10-16 02:43:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:40,446 INFO L225 Difference]: With dead ends: 319 [2021-10-16 02:43:40,446 INFO L226 Difference]: Without dead ends: 183 [2021-10-16 02:43:40,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-16 02:43:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2021-10-16 02:43:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 states have internal predecessors, (238), 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 02:43:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2021-10-16 02:43:40,484 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 70 [2021-10-16 02:43:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:40,486 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2021-10-16 02:43:40,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:43:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2021-10-16 02:43:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-16 02:43:40,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:40,493 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 02:43:40,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:43:40,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash 946971340, now seen corresponding path program 1 times [2021-10-16 02:43:40,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:40,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454849356] [2021-10-16 02:43:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:40,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:43:40,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:40,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454849356] [2021-10-16 02:43:40,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454849356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:40,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:40,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:43:40,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796683770] [2021-10-16 02:43:40,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:40,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:43:40,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:40,613 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:43:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:40,758 INFO L93 Difference]: Finished difference Result 383 states and 532 transitions. [2021-10-16 02:43:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:40,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 90 [2021-10-16 02:43:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:40,762 INFO L225 Difference]: With dead ends: 383 [2021-10-16 02:43:40,762 INFO L226 Difference]: Without dead ends: 209 [2021-10-16 02:43:40,765 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 02:43:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-16 02:43:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2021-10-16 02:43:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3333333333333333) internal successors, (264), 198 states have internal predecessors, (264), 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 02:43:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2021-10-16 02:43:40,790 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 90 [2021-10-16 02:43:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:40,794 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2021-10-16 02:43:40,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:43:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2021-10-16 02:43:40,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-16 02:43:40,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:40,803 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:43:40,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:43:40,803 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash 861766430, now seen corresponding path program 1 times [2021-10-16 02:43:40,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:43:40,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433004408] [2021-10-16 02:43:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:40,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:43:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:40,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:43:40,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433004408] [2021-10-16 02:43:40,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433004408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:43:40,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038804683] [2021-10-16 02:43:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:40,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:40,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:40,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:43:40,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:43:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:41,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:43:41,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:43:41,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:43:42,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038804683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:43:42,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925090169] [2021-10-16 02:43:42,093 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-10-16 02:43:42,094 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:43:42,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:43:42,104 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:43:42,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:43:42,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:43:42,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:43:42,280 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:43:42,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:43:42,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-16 02:43:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:43:42,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:43:42,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:43:42,387 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:43:42,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:43:42,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:43:42,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:43:42,431 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:43:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:43:42,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:43:42,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:43:42,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:43:42,469 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:43:42,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:43:42,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:43:42,867 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-16 02:43:42,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-16 02:43:42,927 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 02:43:42,928 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-16 02:43:42,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:43,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:43:43,155 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_22| 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 02:43:43,158 INFO L168 Benchmark]: Toolchain (without parser) took 5787.29 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 60.1 MB in the beginning and 58.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:43,159 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:43:43,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.93 ms. Allocated memory is still 102.8 MB. Free memory was 59.9 MB in the beginning and 74.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:43,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.91 ms. Allocated memory is still 102.8 MB. Free memory was 74.0 MB in the beginning and 71.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:43,161 INFO L168 Benchmark]: Boogie Preprocessor took 50.64 ms. Allocated memory is still 102.8 MB. Free memory was 71.2 MB in the beginning and 69.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:43,161 INFO L168 Benchmark]: RCFGBuilder took 1185.20 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 69.0 MB in the beginning and 87.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:43,162 INFO L168 Benchmark]: TraceAbstraction took 4087.87 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 86.5 MB in the beginning and 58.1 MB in the end (delta: 28.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:43,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.93 ms. Allocated memory is still 102.8 MB. Free memory was 59.9 MB in the beginning and 74.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.91 ms. Allocated memory is still 102.8 MB. Free memory was 74.0 MB in the beginning and 71.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.64 ms. Allocated memory is still 102.8 MB. Free memory was 71.2 MB in the beginning and 69.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1185.20 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 69.0 MB in the beginning and 87.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4087.87 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 86.5 MB in the beginning and 58.1 MB in the end (delta: 28.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_22| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_22|: 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 02:43:43,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/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 02:43:45,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:43:45,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:43:45,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:43:45,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:43:45,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:43:45,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:43:45,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:43:45,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:43:45,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:43:45,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:43:45,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:43:45,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:43:45,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:43:45,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:43:45,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:43:45,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:43:45,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:43:45,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:43:45,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:43:45,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:43:45,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:43:45,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:43:45,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:43:45,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:43:45,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:43:45,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:43:45,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:43:45,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:43:45,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:43:45,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:43:45,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:43:45,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:43:45,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:43:45,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:43:45,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:43:45,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:43:45,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:43:45,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:43:45,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:43:45,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:43:45,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:43:45,788 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:43:45,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:43:45,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:43:45,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:43:45,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:43:45,790 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:43:45,790 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:43:45,790 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:43:45,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:43:45,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:43:45,792 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:43:45,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:43:45,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:43:45,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:43:45,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:43:45,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:43:45,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:43:45,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:43:45,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:43:45,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:43:45,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:43:45,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:43:45,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:43:45,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:43:45,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:43:45,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:43:45,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:43:45,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:43:45,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:43:45,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:43:45,795 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:43:45,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:43:45,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:43:45,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:43:45,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:43:45,797 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_e1235e00-5190-4b64-bb15-91f37d31e956/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91a67b7fcd329c9ac7337e680d26328053f26df8 [2021-10-16 02:43:46,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:43:46,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:43:46,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:43:46,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:43:46,208 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:43:46,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-16 02:43:46,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/aea34a5e5/6fbba08c464c4ae7a01b23b3d9f80fc2/FLAGa9260b7dd [2021-10-16 02:43:46,882 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:43:46,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c [2021-10-16 02:43:46,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/aea34a5e5/6fbba08c464c4ae7a01b23b3d9f80fc2/FLAGa9260b7dd [2021-10-16 02:43:47,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/data/aea34a5e5/6fbba08c464c4ae7a01b23b3d9f80fc2 [2021-10-16 02:43:47,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:43:47,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:43:47,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:43:47,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:43:47,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:43:47,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49721fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47, skipping insertion in model container [2021-10-16 02:43:47,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:43:47,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:43:47,580 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_e1235e00-5190-4b64-bb15-91f37d31e956/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42848,42861] [2021-10-16 02:43:47,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:43:47,598 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:43:47,654 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_e1235e00-5190-4b64-bb15-91f37d31e956/sv-benchmarks/c/openssl-simplified/s3_srvr_4.cil.c[42848,42861] [2021-10-16 02:43:47,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:43:47,678 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:43:47,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47 WrapperNode [2021-10-16 02:43:47,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:43:47,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:43:47,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:43:47,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:43:47,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:43:47,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:43:47,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:43:47,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:43:47,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:43:47,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:43:47,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:43:47,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:43:47,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (1/1) ... [2021-10-16 02:43:47,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:43:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:43:47,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:43:47,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:43:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:43:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:43:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:43:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:43:48,118 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:43:48,790 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 02:43:48,790 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 02:43:48,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:43:48,800 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:43:48,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:48 BoogieIcfgContainer [2021-10-16 02:43:48,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:43:48,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:43:48,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:43:48,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:43:48,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:43:47" (1/3) ... [2021-10-16 02:43:48,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f48d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:43:48, skipping insertion in model container [2021-10-16 02:43:48,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:43:47" (2/3) ... [2021-10-16 02:43:48,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f48d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:43:48, skipping insertion in model container [2021-10-16 02:43:48,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:48" (3/3) ... [2021-10-16 02:43:48,838 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c [2021-10-16 02:43:48,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:43:48,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:43:48,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:43:48,899 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 02:43:48,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:43:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 02:43:48,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:48,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:48,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:48,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1632005994, now seen corresponding path program 1 times [2021-10-16 02:43:48,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:48,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404139011] [2021-10-16 02:43:48,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:48,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:48,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:48,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:48,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:43:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:49,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:43:49,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:49,236 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 02:43:49,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:49,405 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 02:43:49,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:49,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404139011] [2021-10-16 02:43:49,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404139011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:49,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:49,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:49,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884104895] [2021-10-16 02:43:49,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:49,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:49,437 INFO L87 Difference]: Start difference. First operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 02:43:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:49,706 INFO L93 Difference]: Finished difference Result 302 states and 514 transitions. [2021-10-16 02:43:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:49,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-10-16 02:43:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:49,720 INFO L225 Difference]: With dead ends: 302 [2021-10-16 02:43:49,720 INFO L226 Difference]: Without dead ends: 149 [2021-10-16 02:43:49,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-16 02:43:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-10-16 02:43:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 145 states have internal predecessors, (219), 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 02:43:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-10-16 02:43:49,767 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 44 [2021-10-16 02:43:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:49,768 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-10-16 02:43:49,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 02:43:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-10-16 02:43:49,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 02:43:49,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:49,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:49,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:49,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:49,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1928463050, now seen corresponding path program 1 times [2021-10-16 02:43:49,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:49,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539615959] [2021-10-16 02:43:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:49,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:49,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:49,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:50,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:43:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:50,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:50,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:50,291 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 02:43:50,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:50,465 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 02:43:50,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:50,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539615959] [2021-10-16 02:43:50,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539615959] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:50,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:50,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:50,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533574902] [2021-10-16 02:43:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:50,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:50,469 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 02:43:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:50,627 INFO L93 Difference]: Finished difference Result 309 states and 470 transitions. [2021-10-16 02:43:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:50,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-10-16 02:43:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:50,631 INFO L225 Difference]: With dead ends: 309 [2021-10-16 02:43:50,631 INFO L226 Difference]: Without dead ends: 171 [2021-10-16 02:43:50,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-16 02:43:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-10-16 02:43:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 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 02:43:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-16 02:43:50,646 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 60 [2021-10-16 02:43:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:50,647 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-16 02:43:50,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 02:43:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-16 02:43:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:43:50,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:50,651 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:50,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:50,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:50,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash 81763384, now seen corresponding path program 1 times [2021-10-16 02:43:50,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:50,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744554606] [2021-10-16 02:43:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:50,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:50,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:50,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:43:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:50,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:50,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:43:51,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:43:51,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:51,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744554606] [2021-10-16 02:43:51,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744554606] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:51,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:51,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:51,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473572500] [2021-10-16 02:43:51,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:51,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:51,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:51,516 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:51,730 INFO L93 Difference]: Finished difference Result 373 states and 563 transitions. [2021-10-16 02:43:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:51,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 02:43:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:51,736 INFO L225 Difference]: With dead ends: 373 [2021-10-16 02:43:51,736 INFO L226 Difference]: Without dead ends: 214 [2021-10-16 02:43:51,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-16 02:43:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2021-10-16 02:43:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4038461538461537) internal successors, (292), 208 states have internal predecessors, (292), 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 02:43:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2021-10-16 02:43:51,768 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 81 [2021-10-16 02:43:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:51,769 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2021-10-16 02:43:51,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2021-10-16 02:43:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-16 02:43:51,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:51,773 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:51,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:51,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:51,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash 329909878, now seen corresponding path program 1 times [2021-10-16 02:43:51,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:51,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264913018] [2021-10-16 02:43:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:51,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:51,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:51,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:51,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:43:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:52,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:52,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:43:52,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:43:52,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:52,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264913018] [2021-10-16 02:43:52,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264913018] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:52,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:52,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:52,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552023762] [2021-10-16 02:43:52,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:52,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:52,543 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:52,698 INFO L93 Difference]: Finished difference Result 437 states and 619 transitions. [2021-10-16 02:43:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-16 02:43:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:52,701 INFO L225 Difference]: With dead ends: 437 [2021-10-16 02:43:52,701 INFO L226 Difference]: Without dead ends: 236 [2021-10-16 02:43:52,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-16 02:43:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2021-10-16 02:43:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 231 states have internal predecessors, (320), 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 02:43:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 320 transitions. [2021-10-16 02:43:52,714 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 320 transitions. Word has length 81 [2021-10-16 02:43:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:52,715 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 320 transitions. [2021-10-16 02:43:52,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 320 transitions. [2021-10-16 02:43:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-16 02:43:52,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:52,718 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-10-16 02:43:52,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:52,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:52,929 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash 265533208, now seen corresponding path program 1 times [2021-10-16 02:43:52,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:52,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063051804] [2021-10-16 02:43:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:52,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:52,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:52,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:52,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:43:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:53,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:53,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:43:53,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:43:53,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:53,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063051804] [2021-10-16 02:43:53,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063051804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:53,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:53,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:53,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575417334] [2021-10-16 02:43:53,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:53,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:53,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:53,620 INFO L87 Difference]: Start difference. First operand 232 states and 320 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 02:43:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:53,768 INFO L93 Difference]: Finished difference Result 494 states and 695 transitions. [2021-10-16 02:43:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 02:43:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:53,771 INFO L225 Difference]: With dead ends: 494 [2021-10-16 02:43:53,772 INFO L226 Difference]: Without dead ends: 270 [2021-10-16 02:43:53,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 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 02:43:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-16 02:43:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2021-10-16 02:43:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3671875) internal successors, (350), 256 states have internal predecessors, (350), 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 02:43:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 350 transitions. [2021-10-16 02:43:53,783 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 350 transitions. Word has length 102 [2021-10-16 02:43:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:53,784 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 350 transitions. [2021-10-16 02:43:53,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 02:43:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 350 transitions. [2021-10-16 02:43:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 02:43:53,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:53,786 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:43:53,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:53,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:53,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:53,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1932137040, now seen corresponding path program 1 times [2021-10-16 02:43:54,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:54,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895287556] [2021-10-16 02:43:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:54,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:54,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:54,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:43:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:54,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:54,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:43:54,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:43:54,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:54,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895287556] [2021-10-16 02:43:54,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895287556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:54,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:54,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:43:54,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481411497] [2021-10-16 02:43:54,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:43:54,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:43:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:54,791 INFO L87 Difference]: Start difference. First operand 257 states and 350 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 02:43:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:54,851 INFO L93 Difference]: Finished difference Result 997 states and 1358 transitions. [2021-10-16 02:43:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:43:54,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 121 [2021-10-16 02:43:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:54,858 INFO L225 Difference]: With dead ends: 997 [2021-10-16 02:43:54,858 INFO L226 Difference]: Without dead ends: 748 [2021-10-16 02:43:54,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-16 02:43:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-10-16 02:43:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.357429718875502) internal successors, (1014), 747 states have internal predecessors, (1014), 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 02:43:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1014 transitions. [2021-10-16 02:43:54,894 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1014 transitions. Word has length 121 [2021-10-16 02:43:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:54,894 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1014 transitions. [2021-10-16 02:43:54,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 02:43:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1014 transitions. [2021-10-16 02:43:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 02:43:54,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:54,900 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:43:54,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:55,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:55,111 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:55,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:55,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1552830339, now seen corresponding path program 1 times [2021-10-16 02:43:55,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:55,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073316948] [2021-10-16 02:43:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:55,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:55,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:55,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:43:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:55,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:55,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:43:55,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:43:55,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:55,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073316948] [2021-10-16 02:43:55,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073316948] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:55,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:55,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:55,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105824810] [2021-10-16 02:43:55,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:55,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:55,930 INFO L87 Difference]: Start difference. First operand 748 states and 1014 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 02:43:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:55,977 INFO L93 Difference]: Finished difference Result 1732 states and 2348 transitions. [2021-10-16 02:43:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:55,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 122 [2021-10-16 02:43:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:55,985 INFO L225 Difference]: With dead ends: 1732 [2021-10-16 02:43:55,985 INFO L226 Difference]: Without dead ends: 992 [2021-10-16 02:43:55,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-10-16 02:43:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 992. [2021-10-16 02:43:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.355196770938446) internal successors, (1343), 991 states have internal predecessors, (1343), 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 02:43:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1343 transitions. [2021-10-16 02:43:56,027 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1343 transitions. Word has length 122 [2021-10-16 02:43:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 992 states and 1343 transitions. [2021-10-16 02:43:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 02:43:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1343 transitions. [2021-10-16 02:43:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 02:43:56,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:56,032 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:43:56,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:56,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:56,245 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:56,245 INFO L82 PathProgramCache]: Analyzing trace with hash 323652479, now seen corresponding path program 1 times [2021-10-16 02:43:56,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:56,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499283013] [2021-10-16 02:43:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:56,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:56,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:56,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:56,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:43:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:56,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:56,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:43:56,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:43:57,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:57,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499283013] [2021-10-16 02:43:57,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499283013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:57,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:57,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:57,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475346248] [2021-10-16 02:43:57,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:57,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:57,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:57,095 INFO L87 Difference]: Start difference. First operand 992 states and 1343 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 02:43:57,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:57,133 INFO L93 Difference]: Finished difference Result 2000 states and 2704 transitions. [2021-10-16 02:43:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:57,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 122 [2021-10-16 02:43:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:57,140 INFO L225 Difference]: With dead ends: 2000 [2021-10-16 02:43:57,141 INFO L226 Difference]: Without dead ends: 1016 [2021-10-16 02:43:57,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:57,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-16 02:43:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2021-10-16 02:43:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.3517241379310345) internal successors, (1372), 1015 states have internal predecessors, (1372), 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 02:43:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1372 transitions. [2021-10-16 02:43:57,178 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1372 transitions. Word has length 122 [2021-10-16 02:43:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:57,178 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 1372 transitions. [2021-10-16 02:43:57,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 02:43:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1372 transitions. [2021-10-16 02:43:57,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-16 02:43:57,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:57,182 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:43:57,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:57,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:57,395 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:57,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1712946493, now seen corresponding path program 1 times [2021-10-16 02:43:57,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:57,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070721970] [2021-10-16 02:43:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:57,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:57,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:57,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:43:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:57,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:57,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:43:58,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-16 02:43:58,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:58,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070721970] [2021-10-16 02:43:58,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070721970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:58,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:58,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:43:58,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213358081] [2021-10-16 02:43:58,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:43:58,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:58,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:43:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:58,316 INFO L87 Difference]: Start difference. First operand 1016 states and 1372 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:58,356 INFO L93 Difference]: Finished difference Result 2037 states and 2746 transitions. [2021-10-16 02:43:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:43:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-16 02:43:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:58,363 INFO L225 Difference]: With dead ends: 2037 [2021-10-16 02:43:58,363 INFO L226 Difference]: Without dead ends: 1029 [2021-10-16 02:43:58,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:43:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-10-16 02:43:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1029. [2021-10-16 02:43:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.3472762645914398) internal successors, (1385), 1028 states have internal predecessors, (1385), 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 02:43:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1385 transitions. [2021-10-16 02:43:58,398 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1385 transitions. Word has length 122 [2021-10-16 02:43:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:58,399 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1385 transitions. [2021-10-16 02:43:58,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1385 transitions. [2021-10-16 02:43:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-16 02:43:58,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:58,403 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-16 02:43:58,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:58,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:58,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1470040731, now seen corresponding path program 1 times [2021-10-16 02:43:58,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:58,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790877672] [2021-10-16 02:43:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:58,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:58,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:58,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:58,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:43:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:43:59,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:43:59,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:43:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:43:59,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:43:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 02:43:59,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:43:59,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790877672] [2021-10-16 02:43:59,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790877672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:43:59,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:43:59,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:43:59,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870307946] [2021-10-16 02:43:59,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:43:59,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:43:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:43:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:43:59,785 INFO L87 Difference]: Start difference. First operand 1029 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 02:44:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:00,092 INFO L93 Difference]: Finished difference Result 2066 states and 2910 transitions. [2021-10-16 02:44:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 162 [2021-10-16 02:44:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:00,099 INFO L225 Difference]: With dead ends: 2066 [2021-10-16 02:44:00,099 INFO L226 Difference]: Without dead ends: 1058 [2021-10-16 02:44:00,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-16 02:44:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1035. [2021-10-16 02:44:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.3762088974854931) internal successors, (1423), 1034 states have internal predecessors, (1423), 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 02:44:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1423 transitions. [2021-10-16 02:44:00,137 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1423 transitions. Word has length 162 [2021-10-16 02:44:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:00,138 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1423 transitions. [2021-10-16 02:44:00,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 02:44:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1423 transitions. [2021-10-16 02:44:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-10-16 02:44:00,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:00,142 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-10-16 02:44:00,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:00,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:00,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:00,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash 732516287, now seen corresponding path program 1 times [2021-10-16 02:44:00,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:00,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927744388] [2021-10-16 02:44:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:00,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:00,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:00,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:00,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:44:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:00,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:00,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-16 02:44:01,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-16 02:44:01,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:01,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927744388] [2021-10-16 02:44:01,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927744388] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:01,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:01,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:01,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799137673] [2021-10-16 02:44:01,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:01,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:01,844 INFO L87 Difference]: Start difference. First operand 1035 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 02:44:02,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:02,026 INFO L93 Difference]: Finished difference Result 2142 states and 2995 transitions. [2021-10-16 02:44:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:02,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 205 [2021-10-16 02:44:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:02,035 INFO L225 Difference]: With dead ends: 2142 [2021-10-16 02:44:02,035 INFO L226 Difference]: Without dead ends: 1128 [2021-10-16 02:44:02,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-10-16 02:44:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2021-10-16 02:44:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 1.3584738243123335) internal successors, (1531), 1127 states have internal predecessors, (1531), 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 02:44:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1531 transitions. [2021-10-16 02:44:02,078 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1531 transitions. Word has length 205 [2021-10-16 02:44:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:02,079 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1531 transitions. [2021-10-16 02:44:02,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 02:44:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1531 transitions. [2021-10-16 02:44:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-16 02:44:02,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:02,084 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-16 02:44:02,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:02,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:02,297 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:02,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:02,297 INFO L82 PathProgramCache]: Analyzing trace with hash -344869126, now seen corresponding path program 1 times [2021-10-16 02:44:02,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:02,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254888612] [2021-10-16 02:44:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:02,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:02,300 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:02,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:44:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:02,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:02,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:44:03,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:44:04,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:04,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254888612] [2021-10-16 02:44:04,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254888612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:04,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794063028] [2021-10-16 02:44:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:04,050 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:44:04,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:44:04,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:44:04,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 02:44:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:05,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:44:05,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:44:06,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1794063028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:06,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537456283] [2021-10-16 02:44:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:06,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:44:06,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:06,046 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:44:06,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 02:44:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:07,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:07,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:44:07,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 341 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:44:08,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537456283] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:08,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:44:08,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:44:08,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868216766] [2021-10-16 02:44:08,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:08,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:08,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:08,039 INFO L87 Difference]: Start difference. First operand 1128 states and 1531 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 02:44:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:08,462 INFO L93 Difference]: Finished difference Result 3582 states and 4987 transitions. [2021-10-16 02:44:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:44:08,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 232 [2021-10-16 02:44:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:08,478 INFO L225 Difference]: With dead ends: 3582 [2021-10-16 02:44:08,478 INFO L226 Difference]: Without dead ends: 2475 [2021-10-16 02:44:08,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:44:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2021-10-16 02:44:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2028. [2021-10-16 02:44:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 1.33744449925999) internal successors, (2711), 2027 states have internal predecessors, (2711), 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 02:44:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2711 transitions. [2021-10-16 02:44:08,577 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2711 transitions. Word has length 232 [2021-10-16 02:44:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:08,578 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 2711 transitions. [2021-10-16 02:44:08,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 02:44:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2711 transitions. [2021-10-16 02:44:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-16 02:44:08,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:08,585 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-16 02:44:08,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:08,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:09,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:09,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:09,199 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:09,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1992232068, now seen corresponding path program 1 times [2021-10-16 02:44:09,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:09,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710596660] [2021-10-16 02:44:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:09,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:09,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:09,204 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:09,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:44:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:10,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-16 02:44:10,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-16 02:44:11,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:11,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710596660] [2021-10-16 02:44:11,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710596660] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:11,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:11,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:11,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105661437] [2021-10-16 02:44:11,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:11,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:11,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:11,237 INFO L87 Difference]: Start difference. First operand 2028 states and 2711 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 02:44:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:11,331 INFO L93 Difference]: Finished difference Result 5100 states and 6846 transitions. [2021-10-16 02:44:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:11,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 232 [2021-10-16 02:44:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:11,349 INFO L225 Difference]: With dead ends: 5100 [2021-10-16 02:44:11,350 INFO L226 Difference]: Without dead ends: 3093 [2021-10-16 02:44:11,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-10-16 02:44:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2926. [2021-10-16 02:44:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2925 states have (on average 1.3476923076923077) internal successors, (3942), 2925 states have internal predecessors, (3942), 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 02:44:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 3942 transitions. [2021-10-16 02:44:11,452 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 3942 transitions. Word has length 232 [2021-10-16 02:44:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:11,453 INFO L470 AbstractCegarLoop]: Abstraction has 2926 states and 3942 transitions. [2021-10-16 02:44:11,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 02:44:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 3942 transitions. [2021-10-16 02:44:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-10-16 02:44:11,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:11,462 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1] [2021-10-16 02:44:11,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:11,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:11,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash -357223696, now seen corresponding path program 1 times [2021-10-16 02:44:11,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:11,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849758349] [2021-10-16 02:44:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:11,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:11,683 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:11,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:44:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:12,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:12,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 02:44:13,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-10-16 02:44:13,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:13,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849758349] [2021-10-16 02:44:13,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849758349] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:13,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:13,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:44:13,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667445643] [2021-10-16 02:44:13,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:13,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:13,770 INFO L87 Difference]: Start difference. First operand 2926 states and 3942 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 02:44:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:14,089 INFO L93 Difference]: Finished difference Result 5043 states and 6871 transitions. [2021-10-16 02:44:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 270 [2021-10-16 02:44:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:14,098 INFO L225 Difference]: With dead ends: 5043 [2021-10-16 02:44:14,098 INFO L226 Difference]: Without dead ends: 1386 [2021-10-16 02:44:14,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-10-16 02:44:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1327. [2021-10-16 02:44:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 1.3137254901960784) internal successors, (1742), 1326 states have internal predecessors, (1742), 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 02:44:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1742 transitions. [2021-10-16 02:44:14,144 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1742 transitions. Word has length 270 [2021-10-16 02:44:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:14,145 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1742 transitions. [2021-10-16 02:44:14,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 02:44:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1742 transitions. [2021-10-16 02:44:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-10-16 02:44:14,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:14,152 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:14,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:14,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:14,366 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash -550695156, now seen corresponding path program 1 times [2021-10-16 02:44:14,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:14,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379734987] [2021-10-16 02:44:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:14,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:14,368 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:14,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:44:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:15,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:15,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-10-16 02:44:16,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-10-16 02:44:16,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:16,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379734987] [2021-10-16 02:44:16,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379734987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:16,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:16,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:16,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069243756] [2021-10-16 02:44:16,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:16,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:16,764 INFO L87 Difference]: Start difference. First operand 1327 states and 1742 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 02:44:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:16,906 INFO L93 Difference]: Finished difference Result 2738 states and 3645 transitions. [2021-10-16 02:44:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:16,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 307 [2021-10-16 02:44:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:16,915 INFO L225 Difference]: With dead ends: 2738 [2021-10-16 02:44:16,915 INFO L226 Difference]: Without dead ends: 1432 [2021-10-16 02:44:16,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-16 02:44:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1408. [2021-10-16 02:44:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 1.3063255152807391) internal successors, (1838), 1407 states have internal predecessors, (1838), 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 02:44:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1838 transitions. [2021-10-16 02:44:16,958 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1838 transitions. Word has length 307 [2021-10-16 02:44:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:16,959 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 1838 transitions. [2021-10-16 02:44:16,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 02:44:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1838 transitions. [2021-10-16 02:44:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-10-16 02:44:16,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:16,966 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:16,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:17,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:17,179 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash -123892990, now seen corresponding path program 1 times [2021-10-16 02:44:17,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:17,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817567026] [2021-10-16 02:44:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:17,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:17,181 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:44:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:18,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:18,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-16 02:44:19,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-16 02:44:19,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:19,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817567026] [2021-10-16 02:44:19,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817567026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:19,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:19,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:19,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10845194] [2021-10-16 02:44:19,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:19,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:19,685 INFO L87 Difference]: Start difference. First operand 1408 states and 1838 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 02:44:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:19,847 INFO L93 Difference]: Finished difference Result 2888 states and 3816 transitions. [2021-10-16 02:44:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 330 [2021-10-16 02:44:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:19,855 INFO L225 Difference]: With dead ends: 2888 [2021-10-16 02:44:19,856 INFO L226 Difference]: Without dead ends: 1501 [2021-10-16 02:44:19,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 02:44:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-10-16 02:44:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1495. [2021-10-16 02:44:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 1.2985274431057563) internal successors, (1940), 1494 states have internal predecessors, (1940), 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 02:44:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1940 transitions. [2021-10-16 02:44:19,912 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1940 transitions. Word has length 330 [2021-10-16 02:44:19,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:19,913 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 1940 transitions. [2021-10-16 02:44:19,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 02:44:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1940 transitions. [2021-10-16 02:44:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-10-16 02:44:19,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:19,917 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:19,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:20,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:20,131 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:20,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:20,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1454996061, now seen corresponding path program 1 times [2021-10-16 02:44:20,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:20,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384246401] [2021-10-16 02:44:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:20,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:20,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:20,134 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:20,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:44:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:21,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:44:21,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-10-16 02:44:22,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-10-16 02:44:23,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:23,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384246401] [2021-10-16 02:44:23,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384246401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:23,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:23,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:44:23,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535160980] [2021-10-16 02:44:23,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:44:23,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:44:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:44:23,016 INFO L87 Difference]: Start difference. First operand 1495 states and 1940 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 02:44:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:23,199 INFO L93 Difference]: Finished difference Result 7418 states and 9625 transitions. [2021-10-16 02:44:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:44:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 335 [2021-10-16 02:44:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:23,232 INFO L225 Difference]: With dead ends: 7418 [2021-10-16 02:44:23,232 INFO L226 Difference]: Without dead ends: 5944 [2021-10-16 02:44:23,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.0ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:44:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2021-10-16 02:44:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 2873. [2021-10-16 02:44:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2872 states have (on average 1.3036211699164346) internal successors, (3744), 2872 states have internal predecessors, (3744), 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 02:44:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3744 transitions. [2021-10-16 02:44:23,360 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3744 transitions. Word has length 335 [2021-10-16 02:44:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:23,360 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3744 transitions. [2021-10-16 02:44:23,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 02:44:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3744 transitions. [2021-10-16 02:44:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-10-16 02:44:23,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:23,366 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:23,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:23,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:23,592 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:23,593 INFO L82 PathProgramCache]: Analyzing trace with hash 249024121, now seen corresponding path program 1 times [2021-10-16 02:44:23,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:23,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671072000] [2021-10-16 02:44:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:23,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:23,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:23,595 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:23,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:44:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:25,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:25,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-16 02:44:25,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-16 02:44:26,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:26,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671072000] [2021-10-16 02:44:26,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671072000] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:26,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1422189183] [2021-10-16 02:44:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:26,364 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:44:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:44:26,371 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:44:26,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 02:44:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:28,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:28,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-16 02:44:29,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-16 02:44:29,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1422189183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:29,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886019164] [2021-10-16 02:44:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:29,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:44:29,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:29,902 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:44:29,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 02:44:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:32,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-16 02:44:32,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 735 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-10-16 02:44:33,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886019164] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:33,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:44:33,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:44:33,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304593147] [2021-10-16 02:44:33,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:33,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:33,350 INFO L87 Difference]: Start difference. First operand 2873 states and 3744 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 02:44:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:33,610 INFO L93 Difference]: Finished difference Result 8565 states and 11128 transitions. [2021-10-16 02:44:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:44:33,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 336 [2021-10-16 02:44:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:33,639 INFO L225 Difference]: With dead ends: 8565 [2021-10-16 02:44:33,639 INFO L226 Difference]: Without dead ends: 5713 [2021-10-16 02:44:33,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2012 GetRequests, 2009 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:44:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2021-10-16 02:44:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 3575. [2021-10-16 02:44:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 3574 states have (on average 1.31952993844432) internal successors, (4716), 3574 states have internal predecessors, (4716), 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 02:44:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4716 transitions. [2021-10-16 02:44:33,791 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4716 transitions. Word has length 336 [2021-10-16 02:44:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:33,791 INFO L470 AbstractCegarLoop]: Abstraction has 3575 states and 4716 transitions. [2021-10-16 02:44:33,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 02:44:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4716 transitions. [2021-10-16 02:44:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-10-16 02:44:33,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:33,799 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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, 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 02:44:33,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:34,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:34,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:34,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:44:34,415 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash -430646114, now seen corresponding path program 1 times [2021-10-16 02:44:34,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:34,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342016879] [2021-10-16 02:44:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:34,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:34,417 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:34,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:44:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:36,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:36,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 02:44:36,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-10-16 02:44:37,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:37,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342016879] [2021-10-16 02:44:37,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342016879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:37,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:37,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:37,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524191758] [2021-10-16 02:44:37,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:37,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:37,791 INFO L87 Difference]: Start difference. First operand 3575 states and 4716 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 02:44:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:38,015 INFO L93 Difference]: Finished difference Result 7389 states and 9849 transitions. [2021-10-16 02:44:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 403 [2021-10-16 02:44:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:38,034 INFO L225 Difference]: With dead ends: 7389 [2021-10-16 02:44:38,034 INFO L226 Difference]: Without dead ends: 3835 [2021-10-16 02:44:38,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 803 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 02:44:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-10-16 02:44:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3695. [2021-10-16 02:44:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3694 states have (on average 1.3172712506767732) internal successors, (4866), 3694 states have internal predecessors, (4866), 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 02:44:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4866 transitions. [2021-10-16 02:44:38,202 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4866 transitions. Word has length 403 [2021-10-16 02:44:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:38,203 INFO L470 AbstractCegarLoop]: Abstraction has 3695 states and 4866 transitions. [2021-10-16 02:44:38,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 02:44:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4866 transitions. [2021-10-16 02:44:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-10-16 02:44:38,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:38,213 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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, 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 02:44:38,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:38,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:38,427 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:38,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1911041901, now seen corresponding path program 1 times [2021-10-16 02:44:38,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:38,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131226198] [2021-10-16 02:44:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:38,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:38,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:38,430 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:38,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 02:44:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:40,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:40,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 02:44:41,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-10-16 02:44:42,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:42,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131226198] [2021-10-16 02:44:42,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131226198] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:42,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:42,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:42,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134656287] [2021-10-16 02:44:42,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:42,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:42,004 INFO L87 Difference]: Start difference. First operand 3695 states and 4866 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 02:44:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:42,220 INFO L93 Difference]: Finished difference Result 7801 states and 10487 transitions. [2021-10-16 02:44:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:42,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 404 [2021-10-16 02:44:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:42,230 INFO L225 Difference]: With dead ends: 7801 [2021-10-16 02:44:42,230 INFO L226 Difference]: Without dead ends: 4127 [2021-10-16 02:44:42,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 805 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 02:44:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2021-10-16 02:44:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 4103. [2021-10-16 02:44:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 1.3003412969283277) internal successors, (5334), 4102 states have internal predecessors, (5334), 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 02:44:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5334 transitions. [2021-10-16 02:44:42,344 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5334 transitions. Word has length 404 [2021-10-16 02:44:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:42,345 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5334 transitions. [2021-10-16 02:44:42,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 02:44:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5334 transitions. [2021-10-16 02:44:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-10-16 02:44:42,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:42,354 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 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, 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 02:44:42,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:42,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:42,579 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash -211737851, now seen corresponding path program 1 times [2021-10-16 02:44:42,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:42,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828184493] [2021-10-16 02:44:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:42,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:42,581 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:42,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-16 02:44:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:44,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:44,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 02:44:45,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-10-16 02:44:46,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:46,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828184493] [2021-10-16 02:44:46,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828184493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:46,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:46,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:46,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125158326] [2021-10-16 02:44:46,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:46,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:46,458 INFO L87 Difference]: Start difference. First operand 4103 states and 5334 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 02:44:46,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:46,653 INFO L93 Difference]: Finished difference Result 7891 states and 10275 transitions. [2021-10-16 02:44:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 435 [2021-10-16 02:44:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:46,661 INFO L225 Difference]: With dead ends: 7891 [2021-10-16 02:44:46,662 INFO L226 Difference]: Without dead ends: 3809 [2021-10-16 02:44:46,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2021-10-16 02:44:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3501. [2021-10-16 02:44:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 1.245142857142857) internal successors, (4358), 3500 states have internal predecessors, (4358), 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 02:44:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4358 transitions. [2021-10-16 02:44:46,758 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4358 transitions. Word has length 435 [2021-10-16 02:44:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:46,759 INFO L470 AbstractCegarLoop]: Abstraction has 3501 states and 4358 transitions. [2021-10-16 02:44:46,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 02:44:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4358 transitions. [2021-10-16 02:44:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-10-16 02:44:46,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:46,766 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 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, 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 02:44:46,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:46,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:46,985 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:44:46,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:46,986 INFO L82 PathProgramCache]: Analyzing trace with hash 89040274, now seen corresponding path program 1 times [2021-10-16 02:44:46,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:46,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745320860] [2021-10-16 02:44:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:46,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:46,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:46,988 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:46,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:44:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:49,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:49,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:44:50,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:44:51,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:51,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745320860] [2021-10-16 02:44:51,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745320860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:51,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1780395827] [2021-10-16 02:44:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:51,018 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:44:51,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:44:51,019 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:44:51,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-16 02:44:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:55,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:44:55,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:44:56,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:44:56,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1780395827] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:44:56,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390830515] [2021-10-16 02:44:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:56,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:44:56,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:56,877 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:44:56,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-16 02:45:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:00,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:45:00,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:45:01,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:45:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 947 proven. 26 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-10-16 02:45:01,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390830515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:45:01,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:45:01,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:45:01,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453043027] [2021-10-16 02:45:01,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:45:01,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:45:01,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:45:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:45:01,999 INFO L87 Difference]: Start difference. First operand 3501 states and 4358 transitions. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 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 02:45:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:45:02,330 INFO L93 Difference]: Finished difference Result 4833 states and 6002 transitions. [2021-10-16 02:45:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:45:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 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) Word has length 468 [2021-10-16 02:45:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:45:02,333 INFO L225 Difference]: With dead ends: 4833 [2021-10-16 02:45:02,333 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:45:02,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2808 GetRequests, 2801 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:45:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:45:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:45:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 02:45:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:45:02,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 468 [2021-10-16 02:45:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:45:02,338 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:45:02,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 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 02:45:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:45:02,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:45:02,341 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:45:02,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:02,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-16 02:45:02,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:02,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:45:02,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:45:02,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:02,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:03,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:45:05,778 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 535) no Hoare annotation was computed. [2021-10-16 02:45:05,778 INFO L857 garLoopResultBuilder]: For program point L531-2(lines 531 535) no Hoare annotation was computed. [2021-10-16 02:45:05,778 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 417) no Hoare annotation was computed. [2021-10-16 02:45:05,778 INFO L853 garLoopResultBuilder]: At program point L201(lines 197 562) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:45:05,779 INFO L853 garLoopResultBuilder]: At program point L168(lines 164 573) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,779 INFO L853 garLoopResultBuilder]: At program point L135(lines 134 583) the Hoare annotation is: (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-16 02:45:05,779 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2021-10-16 02:45:05,779 INFO L857 garLoopResultBuilder]: For program point L499(lines 499 502) no Hoare annotation was computed. [2021-10-16 02:45:05,779 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 406) no Hoare annotation was computed. [2021-10-16 02:45:05,779 INFO L860 garLoopResultBuilder]: At program point L632(lines 623 634) the Hoare annotation is: true [2021-10-16 02:45:05,779 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 560) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 571) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 582) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L600(lines 600 604) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 272) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L237(lines 237 248) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L237-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-10-16 02:45:05,780 INFO L857 garLoopResultBuilder]: For program point L304-2(lines 304 308) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L857 garLoopResultBuilder]: For program point L437-1(lines 437 445) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 559) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 570) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 581) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L857 garLoopResultBuilder]: For program point L504(lines 504 510) no Hoare annotation was computed. [2021-10-16 02:45:05,781 INFO L853 garLoopResultBuilder]: At program point L207(lines 203 560) the Hoare annotation is: (let ((.cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse0) (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) .cse0))) [2021-10-16 02:45:05,782 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 571) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,782 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 443) no Hoare annotation was computed. [2021-10-16 02:45:05,782 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 379) no Hoare annotation was computed. [2021-10-16 02:45:05,782 INFO L857 garLoopResultBuilder]: For program point L209(lines 209 558) no Hoare annotation was computed. [2021-10-16 02:45:05,782 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 569) no Hoare annotation was computed. [2021-10-16 02:45:05,782 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 580) no Hoare annotation was computed. [2021-10-16 02:45:05,783 INFO L853 garLoopResultBuilder]: At program point L110-2(lines 110 609) the Hoare annotation is: (let ((.cse10 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32)))) (.cse4 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse9 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse8 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse6 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse6 .cse7 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse9 .cse6 .cse7 .cse8) (and .cse6 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse10 .cse3 .cse8) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse6 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse12 .cse6 .cse7 .cse8) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and .cse10 .cse6 .cse7 .cse8) (and .cse4 .cse0 .cse3) (and .cse0 .cse12 .cse2 .cse3) (and .cse11 .cse6 .cse1 .cse8) (and .cse9 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse5 .cse6 .cse1))) [2021-10-16 02:45:05,783 INFO L857 garLoopResultBuilder]: For program point L507(lines 507 509) no Hoare annotation was computed. [2021-10-16 02:45:05,783 INFO L857 garLoopResultBuilder]: For program point L507-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:45:05,783 INFO L853 garLoopResultBuilder]: At program point L408(lines 399 417) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,783 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-16 02:45:05,784 INFO L853 garLoopResultBuilder]: At program point L177(lines 176 569) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse0 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1 .cse0))) [2021-10-16 02:45:05,784 INFO L853 garLoopResultBuilder]: At program point L144(lines 137 582) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:45:05,784 INFO L857 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2021-10-16 02:45:05,784 INFO L857 garLoopResultBuilder]: For program point L541(lines 541 547) no Hoare annotation was computed. [2021-10-16 02:45:05,784 INFO L857 garLoopResultBuilder]: For program point L541-1(lines 541 547) no Hoare annotation was computed. [2021-10-16 02:45:05,784 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 378) no Hoare annotation was computed. [2021-10-16 02:45:05,784 INFO L857 garLoopResultBuilder]: For program point L344-1(lines 344 378) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 557) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 568) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 579) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 590) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 479) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L411(lines 411 413) no Hoare annotation was computed. [2021-10-16 02:45:05,785 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 375) no Hoare annotation was computed. [2021-10-16 02:45:05,786 INFO L853 garLoopResultBuilder]: At program point L213(lines 209 558) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1) (and (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))))) [2021-10-16 02:45:05,786 INFO L853 garLoopResultBuilder]: At program point L114(lines 113 590) the Hoare annotation is: false [2021-10-16 02:45:05,786 INFO L860 garLoopResultBuilder]: At program point L610(lines 109 611) the Hoare annotation is: true [2021-10-16 02:45:05,786 INFO L857 garLoopResultBuilder]: For program point L544(lines 544 546) no Hoare annotation was computed. [2021-10-16 02:45:05,786 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 556) no Hoare annotation was computed. [2021-10-16 02:45:05,786 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 567) no Hoare annotation was computed. [2021-10-16 02:45:05,787 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 578) no Hoare annotation was computed. [2021-10-16 02:45:05,787 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 589) no Hoare annotation was computed. [2021-10-16 02:45:05,787 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 322) no Hoare annotation was computed. [2021-10-16 02:45:05,787 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 315 322) no Hoare annotation was computed. [2021-10-16 02:45:05,787 INFO L860 garLoopResultBuilder]: At program point L216(lines 215 556) the Hoare annotation is: true [2021-10-16 02:45:05,787 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 568) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,788 INFO L853 garLoopResultBuilder]: At program point L150(lines 146 579) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2021-10-16 02:45:05,788 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 373) no Hoare annotation was computed. [2021-10-16 02:45:05,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:45:05,788 INFO L860 garLoopResultBuilder]: At program point L218(lines 217 556) the Hoare annotation is: true [2021-10-16 02:45:05,788 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 566) no Hoare annotation was computed. [2021-10-16 02:45:05,788 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 577) no Hoare annotation was computed. [2021-10-16 02:45:05,788 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 588) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L615(lines 615 617) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L615-2(lines 615 617) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 519) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 287) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L285-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 453) no Hoare annotation was computed. [2021-10-16 02:45:05,789 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 321) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L353(lines 353 357) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L353-2(lines 353 357) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L254(lines 254 264) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 565) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 576) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 587) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L486(lines 486 488) no Hoare annotation was computed. [2021-10-16 02:45:05,790 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 419) no Hoare annotation was computed. [2021-10-16 02:45:05,791 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 258) no Hoare annotation was computed. [2021-10-16 02:45:05,791 INFO L853 garLoopResultBuilder]: At program point L222(lines 116 589) the Hoare annotation is: false [2021-10-16 02:45:05,791 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 566) the Hoare annotation is: (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,791 INFO L853 garLoopResultBuilder]: At program point L156(lines 152 577) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,791 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 463) no Hoare annotation was computed. [2021-10-16 02:45:05,791 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-10-16 02:45:05,792 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:45:05,792 INFO L860 garLoopResultBuilder]: At program point L620(lines 22 622) the Hoare annotation is: true [2021-10-16 02:45:05,792 INFO L853 garLoopResultBuilder]: At program point L554(lines 110 609) the Hoare annotation is: (let ((.cse10 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32)))) (.cse4 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse12 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse9 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse0 (not (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (.cse8 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse6 (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0)) (.cse1 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse6 .cse7 (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse9 .cse6 .cse7 .cse8) (and .cse6 (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse10 .cse3 .cse8) (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse6 (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse11 .cse6 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse8) (and .cse12 .cse6 .cse7 .cse8) (and .cse11 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and .cse10 .cse6 .cse7 .cse8) (and .cse4 .cse0 .cse3) (and .cse0 .cse12 .cse2 .cse3) (and .cse11 .cse6 .cse1 .cse8) (and .cse9 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse0 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse8) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse5 .cse6 .cse1))) [2021-10-16 02:45:05,792 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 564) no Hoare annotation was computed. [2021-10-16 02:45:05,792 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 575) no Hoare annotation was computed. [2021-10-16 02:45:05,792 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 586) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point L489(lines 489 493) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point L489-2(lines 489 493) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point L524(lines 524 526) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2021-10-16 02:45:05,793 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:45:05,794 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 563) no Hoare annotation was computed. [2021-10-16 02:45:05,794 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 574) no Hoare annotation was computed. [2021-10-16 02:45:05,794 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2021-10-16 02:45:05,794 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 585) no Hoare annotation was computed. [2021-10-16 02:45:05,794 INFO L857 garLoopResultBuilder]: For program point L591(lines 591 607) no Hoare annotation was computed. [2021-10-16 02:45:05,794 INFO L853 garLoopResultBuilder]: At program point L525(lines 83 621) the Hoare annotation is: false [2021-10-16 02:45:05,795 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 564) the Hoare annotation is: (and (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8656 32))) (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,795 INFO L853 garLoopResultBuilder]: At program point L162(lines 158 575) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,795 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2021-10-16 02:45:05,795 INFO L857 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:45:05,795 INFO L857 garLoopResultBuilder]: For program point L592(lines 592 606) no Hoare annotation was computed. [2021-10-16 02:45:05,795 INFO L857 garLoopResultBuilder]: For program point L361(lines 361 369) no Hoare annotation was computed. [2021-10-16 02:45:05,795 INFO L857 garLoopResultBuilder]: For program point L593(lines 593 598) no Hoare annotation was computed. [2021-10-16 02:45:05,796 INFO L857 garLoopResultBuilder]: For program point L527(lines 527 529) no Hoare annotation was computed. [2021-10-16 02:45:05,796 INFO L857 garLoopResultBuilder]: For program point L593-2(lines 592 606) no Hoare annotation was computed. [2021-10-16 02:45:05,796 INFO L853 garLoopResultBuilder]: At program point L362(lines 338 380) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,796 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 562) no Hoare annotation was computed. [2021-10-16 02:45:05,796 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 573) no Hoare annotation was computed. [2021-10-16 02:45:05,796 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 584) no Hoare annotation was computed. [2021-10-16 02:45:05,796 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:45:05,797 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 619) no Hoare annotation was computed. [2021-10-16 02:45:05,797 INFO L857 garLoopResultBuilder]: For program point L429(lines 429 431) no Hoare annotation was computed. [2021-10-16 02:45:05,797 INFO L853 garLoopResultBuilder]: At program point L396(lines 387 419) the Hoare annotation is: (and (not (= (_ bv8657 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) [2021-10-16 02:45:05,797 INFO L853 garLoopResultBuilder]: At program point L132(lines 128 585) the Hoare annotation is: false [2021-10-16 02:45:05,797 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 597) no Hoare annotation was computed. [2021-10-16 02:45:05,797 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 366) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 300) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L298-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 336) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L332-2(lines 219 553) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 561) no Hoare annotation was computed. [2021-10-16 02:45:05,798 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 572) no Hoare annotation was computed. [2021-10-16 02:45:05,799 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 583) no Hoare annotation was computed. [2021-10-16 02:45:05,799 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-10-16 02:45:05,799 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 83 621) no Hoare annotation was computed. [2021-10-16 02:45:05,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:45:05,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:45:05 BoogieIcfgContainer [2021-10-16 02:45:05,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:45:05,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:45:05,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:45:05,857 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:45:05,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:43:48" (3/4) ... [2021-10-16 02:45:05,861 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:45:05,887 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:45:05,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:45:05,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:45:05,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:45:06,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:45:06,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:45:06,024 INFO L168 Benchmark]: Toolchain (without parser) took 78833.16 ms. Allocated memory was 60.8 MB in the beginning and 488.6 MB in the end (delta: 427.8 MB). Free memory was 38.0 MB in the beginning and 281.1 MB in the end (delta: -243.0 MB). Peak memory consumption was 363.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,025 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:45:06,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.00 ms. Allocated memory is still 60.8 MB. Free memory was 37.8 MB in the beginning and 39.9 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.33 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 37.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,026 INFO L168 Benchmark]: Boogie Preprocessor took 64.62 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 35.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,027 INFO L168 Benchmark]: RCFGBuilder took 969.78 ms. Allocated memory is still 60.8 MB. Free memory was 34.8 MB in the beginning and 25.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,027 INFO L168 Benchmark]: TraceAbstraction took 77050.64 ms. Allocated memory was 60.8 MB in the beginning and 488.6 MB in the end (delta: 427.8 MB). Free memory was 25.3 MB in the beginning and 108.9 MB in the end (delta: -83.6 MB). Peak memory consumption was 368.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,028 INFO L168 Benchmark]: Witness Printer took 165.68 ms. Allocated memory is still 488.6 MB. Free memory was 108.9 MB in the beginning and 281.1 MB in the end (delta: -172.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:45:06,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 489.00 ms. Allocated memory is still 60.8 MB. Free memory was 37.8 MB in the beginning and 39.9 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.33 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 37.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.62 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 35.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 969.78 ms. Allocated memory is still 60.8 MB. Free memory was 34.8 MB in the beginning and 25.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 77050.64 ms. Allocated memory was 60.8 MB in the beginning and 488.6 MB in the end (delta: 427.8 MB). Free memory was 25.3 MB in the beginning and 108.9 MB in the end (delta: -83.6 MB). Peak memory consumption was 368.1 MB. Max. memory is 16.1 GB. * Witness Printer took 165.68 ms. Allocated memory is still 488.6 MB. Free memory was 108.9 MB in the beginning and 281.1 MB in the end (delta: -172.1 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 619]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76913.0ms, OverallIterations: 22, TraceHistogramMax: 15, EmptinessCheckTime: 115.2ms, AutomataDifference: 4506.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2821.7ms, InitialAbstractionConstructionTime: 14.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5022 SDtfs, 2802 SDslu, 4349 SDs, 0 SdLazy, 2631 SolverSat, 529 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2263.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14052 GetRequests, 14011 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 176.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4103occurred in iteration=20, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1280.2ms AutomataMinimizationTime, 22 MinimizatonAttempts, 6436 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 210 NumberOfFragments, 870 HoareAnnotationTreeSize, 28 FomulaSimplifications, 14614 FormulaSimplificationTreeSizeReduction, 928.7ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 2763 FormulaSimplificationTreeSizeReductionInter, 1878.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 490.2ms SsaConstructionTime, 1987.8ms SatisfiabilityAnalysisTime, 28925.3ms InterpolantComputationTime, 7046 NumberOfCodeBlocks, 7046 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 14036 ConstructedInterpolants, 0 QuantifiedInterpolants, 19333 SizeOfPredicates, 14 NumberOfNonLiveVariables, 8444 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 56 InterpolantComputations, 38 PerfectInterpolantSequences, 44554/45022 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 83]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (!(4bv32 == blastFlag) && !(8657bv32 == s__state)) && !(8656bv32 == s__state) - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag) || ((!(8657bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) - InvariantResult [Line: 399]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 8608bv32 == s__state) && 2bv32 == blastFlag - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && blastFlag == 0bv32) && !(8656bv32 == s__state)) || ((((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((!(4bv32 == blastFlag) && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32))) || (((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 8466bv32 == s__state) && 2bv32 == blastFlag)) || (((8496bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8560bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8544bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8640bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((8672bv32 == s__state && !(4bv32 == blastFlag)) && !(s__hit == 0bv32))) || (((!(4bv32 == blastFlag) && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (8464bv32 == s__state && blastFlag == 0bv32)) || (!(4bv32 == blastFlag) && 3bv32 == s__state)) || ((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: ((((!(4bv32 == blastFlag) && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8657bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: ((((3bv32 == blastFlag && !(8657bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) || (((!(4bv32 == blastFlag) && !(8657bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 338]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: (!(8657bv32 == s__state) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 623]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: (((8576bv32 == s__s3__tmp__next_state___0 && !(8657bv32 == s__state)) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && blastFlag == 1bv32) && !(8656bv32 == s__state)) || ((((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: ((((!(4bv32 == blastFlag) && !(8657bv32 == s__state)) && !(8656bv32 == s__state)) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || ((((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && !(8656bv32 == s__state)) && 2bv32 == blastFlag) - InvariantResult [Line: 158]: Loop Invariant Derived loop invariant: ((!(8657bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(8656bv32 == s__state)) && 2bv32 == blastFlag - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: (((((((((((((((((((((!(4bv32 == blastFlag) && 8448bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32)) || (((8672bv32 == s__state && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32))) || (((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && !(s__s3__tmp__next_state___0 == 8656bv32)) && 8466bv32 == s__state) && 2bv32 == blastFlag)) || (((8496bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8560bv32 == s__state) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || (8512bv32 == s__state && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || ((s__s3__tmp__new_cipher__algorithms == __cil_tmp56 && 8544bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8640bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((8656bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && !(s__s3__tmp__next_state___0 == 8656bv32)) && 2bv32 == blastFlag)) || ((8672bv32 == s__state && !(4bv32 == blastFlag)) && !(s__hit == 0bv32))) || (((!(4bv32 == blastFlag) && 8640bv32 == s__state) && s__s3__tmp__next_state___0 == 8640bv32) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || (!(4bv32 == blastFlag) && 3bv32 == s__state)) || ((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 2bv32 == blastFlag)) || (((3bv32 == s__s3__tmp__next_state___0 && 3bv32 == blastFlag) && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && 8448bv32 == s__state) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:45:06,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1235e00-5190-4b64-bb15-91f37d31e956/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...