./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG --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 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG --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 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:20:26,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:20:26,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:20:27,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:20:27,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:20:27,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:20:27,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:20:27,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:20:27,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:20:27,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:20:27,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:20:27,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:20:27,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:20:27,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:20:27,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:20:27,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:20:27,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:20:27,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:20:27,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:20:27,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:20:27,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:20:27,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:20:27,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:20:27,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:20:27,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:20:27,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:20:27,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:20:27,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:20:27,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:20:27,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:20:27,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:20:27,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:20:27,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:20:27,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:20:27,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:20:27,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:20:27,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:20:27,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:20:27,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:20:27,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:20:27,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:20:27,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:20:27,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:20:27,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:20:27,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:20:27,110 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:20:27,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:20:27,111 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:20:27,111 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:20:27,111 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:20:27,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:20:27,112 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:20:27,112 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:20:27,113 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:20:27,113 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:20:27,113 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:20:27,114 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:20:27,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:20:27,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:20:27,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:20:27,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:20:27,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:20:27,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:20:27,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:20:27,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:20:27,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:20:27,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:20:27,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:20:27,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:20:27,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:20:27,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:20:27,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:20:27,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:20:27,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:20:27,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:20:27,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:20:27,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:20:27,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:20:27,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:20:27,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:20:27,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:20:27,122 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_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c [2021-10-29 05:20:27,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:20:27,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:20:27,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:20:27,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:20:27,419 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:20:27,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-29 05:20:27,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/946e68d4d/c8dcc71f67a34c249e20d7719636f1a0/FLAGfba1fd17d [2021-10-29 05:20:28,065 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:20:28,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-29 05:20:28,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/946e68d4d/c8dcc71f67a34c249e20d7719636f1a0/FLAGfba1fd17d [2021-10-29 05:20:28,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/946e68d4d/c8dcc71f67a34c249e20d7719636f1a0 [2021-10-29 05:20:28,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:20:28,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:20:28,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:20:28,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:20:28,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:20:28,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b8f419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28, skipping insertion in model container [2021-10-29 05:20:28,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:20:28,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:20:28,710 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-29 05:20:28,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:20:28,764 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:20:28,776 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_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-29 05:20:28,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:20:28,831 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:20:28,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28 WrapperNode [2021-10-29 05:20:28,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:20:28,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:20:28,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:20:28,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:20:28,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:20:28,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:20:28,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:20:28,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:20:28,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:20:28,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:20:28,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:20:28,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:20:28,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (1/1) ... [2021-10-29 05:20:28,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:20:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:20:28,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:20:29,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:20:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:20:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:20:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:20:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:20:29,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:20:29,669 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-29 05:20:29,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:29 BoogieIcfgContainer [2021-10-29 05:20:29,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:20:29,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:20:29,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:20:29,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:20:29,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:20:28" (1/3) ... [2021-10-29 05:20:29,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e8d425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:20:29, skipping insertion in model container [2021-10-29 05:20:29,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:28" (2/3) ... [2021-10-29 05:20:29,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e8d425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:20:29, skipping insertion in model container [2021-10-29 05:20:29,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:29" (3/3) ... [2021-10-29 05:20:29,681 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-29 05:20:29,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:20:29,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 05:20:29,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:20:29,744 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, mAutomataTypeConcurrency=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 [2021-10-29 05:20:29,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 05:20:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 64 states have (on average 1.71875) internal successors, (110), 71 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:20:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:20:29,768 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:29,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:29,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:29,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash 518193643, now seen corresponding path program 1 times [2021-10-29 05:20:29,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:29,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259661418] [2021-10-29 05:20:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:29,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:30,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:30,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259661418] [2021-10-29 05:20:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259661418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:30,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:30,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:20:30,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225292151] [2021-10-29 05:20:30,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:20:30,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:20:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:20:30,099 INFO L87 Difference]: Start difference. First operand has 72 states, 64 states have (on average 1.71875) internal successors, (110), 71 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-29 05:20:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:30,294 INFO L93 Difference]: Finished difference Result 208 states and 302 transitions. [2021-10-29 05:20:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:20:30,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-10-29 05:20:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:30,307 INFO L225 Difference]: With dead ends: 208 [2021-10-29 05:20:30,307 INFO L226 Difference]: Without dead ends: 137 [2021-10-29 05:20:30,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:20:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-29 05:20:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2021-10-29 05:20:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 91 states have (on average 1.4945054945054945) internal successors, (136), 97 states have internal predecessors, (136), 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) [2021-10-29 05:20:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2021-10-29 05:20:30,358 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 10 [2021-10-29 05:20:30,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:30,359 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2021-10-29 05:20:30,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-29 05:20:30,359 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2021-10-29 05:20:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:20:30,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:30,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:30,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:20:30,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:30,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1493418838, now seen corresponding path program 1 times [2021-10-29 05:20:30,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:30,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389334213] [2021-10-29 05:20:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:30,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:30,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:30,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389334213] [2021-10-29 05:20:30,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389334213] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:30,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:30,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-29 05:20:30,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384276298] [2021-10-29 05:20:30,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:20:30,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:30,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:20:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:20:30,719 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-29 05:20:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:31,149 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2021-10-29 05:20:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:20:31,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 13 [2021-10-29 05:20:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:31,153 INFO L225 Difference]: With dead ends: 144 [2021-10-29 05:20:31,154 INFO L226 Difference]: Without dead ends: 136 [2021-10-29 05:20:31,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:20:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-29 05:20:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2021-10-29 05:20:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 89 states have (on average 1.4831460674157304) internal successors, (132), 95 states have internal predecessors, (132), 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) [2021-10-29 05:20:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2021-10-29 05:20:31,182 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 13 [2021-10-29 05:20:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:31,183 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2021-10-29 05:20:31,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-29 05:20:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2021-10-29 05:20:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:20:31,186 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:31,187 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:31,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:20:31,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1332807776, now seen corresponding path program 1 times [2021-10-29 05:20:31,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:31,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376418144] [2021-10-29 05:20:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:31,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:31,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:31,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376418144] [2021-10-29 05:20:31,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376418144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:31,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:31,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:20:31,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722443088] [2021-10-29 05:20:31,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:20:31,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:20:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:20:31,365 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-29 05:20:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:31,452 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2021-10-29 05:20:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:20:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-10-29 05:20:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:31,458 INFO L225 Difference]: With dead ends: 144 [2021-10-29 05:20:31,458 INFO L226 Difference]: Without dead ends: 122 [2021-10-29 05:20:31,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:20:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-29 05:20:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2021-10-29 05:20:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 85 states have internal predecessors, (115), 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) [2021-10-29 05:20:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2021-10-29 05:20:31,485 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 14 [2021-10-29 05:20:31,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:31,486 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2021-10-29 05:20:31,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-29 05:20:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2021-10-29 05:20:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:20:31,488 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:31,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:31,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:20:31,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1995564591, now seen corresponding path program 1 times [2021-10-29 05:20:31,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:31,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854670206] [2021-10-29 05:20:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:31,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:31,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:31,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854670206] [2021-10-29 05:20:31,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854670206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:31,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:31,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:20:31,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380903753] [2021-10-29 05:20:31,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:20:31,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:20:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:20:31,696 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-29 05:20:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:31,867 INFO L93 Difference]: Finished difference Result 249 states and 307 transitions. [2021-10-29 05:20:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:20:31,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 16 [2021-10-29 05:20:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:31,871 INFO L225 Difference]: With dead ends: 249 [2021-10-29 05:20:31,871 INFO L226 Difference]: Without dead ends: 229 [2021-10-29 05:20:31,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:20:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-29 05:20:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 92. [2021-10-29 05:20:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 91 states have internal predecessors, (125), 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) [2021-10-29 05:20:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2021-10-29 05:20:31,880 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 16 [2021-10-29 05:20:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:31,881 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2021-10-29 05:20:31,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-29 05:20:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2021-10-29 05:20:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:20:31,882 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:31,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:31,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:20:31,883 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash -348416491, now seen corresponding path program 1 times [2021-10-29 05:20:31,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:31,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413166165] [2021-10-29 05:20:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:31,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:32,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:32,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413166165] [2021-10-29 05:20:32,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413166165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:32,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:32,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:20:32,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697585916] [2021-10-29 05:20:32,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:20:32,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:20:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:20:32,120 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-29 05:20:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:32,176 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2021-10-29 05:20:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:20:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-29 05:20:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:32,178 INFO L225 Difference]: With dead ends: 128 [2021-10-29 05:20:32,178 INFO L226 Difference]: Without dead ends: 108 [2021-10-29 05:20:32,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:20:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-29 05:20:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2021-10-29 05:20:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 83 states have internal predecessors, (113), 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) [2021-10-29 05:20:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2021-10-29 05:20:32,190 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 16 [2021-10-29 05:20:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:32,191 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-29 05:20:32,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-29 05:20:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2021-10-29 05:20:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:20:32,193 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:32,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:32,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:20:32,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:32,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1395258753, now seen corresponding path program 1 times [2021-10-29 05:20:32,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:32,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785417060] [2021-10-29 05:20:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:32,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:32,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:32,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785417060] [2021-10-29 05:20:32,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785417060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:32,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:32,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-29 05:20:32,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029423946] [2021-10-29 05:20:32,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:20:32,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:32,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:20:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:20:32,664 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-29 05:20:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:33,225 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2021-10-29 05:20:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:20:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2021-10-29 05:20:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:33,228 INFO L225 Difference]: With dead ends: 100 [2021-10-29 05:20:33,228 INFO L226 Difference]: Without dead ends: 82 [2021-10-29 05:20:33,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:20:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-29 05:20:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2021-10-29 05:20:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 73 states have internal predecessors, (97), 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) [2021-10-29 05:20:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2021-10-29 05:20:33,232 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 17 [2021-10-29 05:20:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:33,232 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2021-10-29 05:20:33,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-29 05:20:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2021-10-29 05:20:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:20:33,233 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:33,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:33,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:20:33,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1732923195, now seen corresponding path program 1 times [2021-10-29 05:20:33,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:33,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357118450] [2021-10-29 05:20:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:33,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:33,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:33,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357118450] [2021-10-29 05:20:33,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357118450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:33,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:33,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-29 05:20:33,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940109445] [2021-10-29 05:20:33,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:20:33,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:33,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:20:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:20:33,468 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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) [2021-10-29 05:20:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:34,348 INFO L93 Difference]: Finished difference Result 246 states and 301 transitions. [2021-10-29 05:20:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-29 05:20:34,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 17 [2021-10-29 05:20:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:34,350 INFO L225 Difference]: With dead ends: 246 [2021-10-29 05:20:34,351 INFO L226 Difference]: Without dead ends: 236 [2021-10-29 05:20:34,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-10-29 05:20:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-29 05:20:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 87. [2021-10-29 05:20:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.4375) internal successors, (115), 86 states have internal predecessors, (115), 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) [2021-10-29 05:20:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2021-10-29 05:20:34,359 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 17 [2021-10-29 05:20:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:34,360 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2021-10-29 05:20:34,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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) [2021-10-29 05:20:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2021-10-29 05:20:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:20:34,361 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:34,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:34,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:20:34,362 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2084027649, now seen corresponding path program 1 times [2021-10-29 05:20:34,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:34,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950688728] [2021-10-29 05:20:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:34,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:34,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:20:34,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950688728] [2021-10-29 05:20:34,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950688728] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:34,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:34,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-29 05:20:34,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193013880] [2021-10-29 05:20:34,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:20:34,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:20:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:20:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:20:34,542 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-10-29 05:20:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:34,786 INFO L93 Difference]: Finished difference Result 95 states and 123 transitions. [2021-10-29 05:20:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:20:34,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2021-10-29 05:20:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:34,788 INFO L225 Difference]: With dead ends: 95 [2021-10-29 05:20:34,788 INFO L226 Difference]: Without dead ends: 87 [2021-10-29 05:20:34,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:20:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-29 05:20:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2021-10-29 05:20:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 79 states have internal predecessors, (105), 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) [2021-10-29 05:20:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2021-10-29 05:20:34,796 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 17 [2021-10-29 05:20:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:34,796 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2021-10-29 05:20:34,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-10-29 05:20:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2021-10-29 05:20:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:20:34,797 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:34,797 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:34,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:20:34,798 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1729804305, now seen corresponding path program 1 times [2021-10-29 05:20:34,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:20:34,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462831493] [2021-10-29 05:20:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:34,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:20:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:20:34,846 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:20:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:20:34,912 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:20:34,912 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:20:34,914 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,918 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:34,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:20:34,922 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:34,924 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:20:34,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:20:34 BoogieIcfgContainer [2021-10-29 05:20:34,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:20:34,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:20:34,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:20:34,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:20:34,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:29" (3/4) ... [2021-10-29 05:20:34,960 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:20:34,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:20:34,962 INFO L168 Benchmark]: Toolchain (without parser) took 6553.22 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 69.8 MB in the beginning and 114.3 MB in the end (delta: -44.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:34,962 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 102.8 MB. Free memory was 56.9 MB in the beginning and 56.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:20:34,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.49 ms. Allocated memory is still 102.8 MB. Free memory was 69.6 MB in the beginning and 75.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:34,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 73.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:34,964 INFO L168 Benchmark]: Boogie Preprocessor took 47.55 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 71.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:20:34,965 INFO L168 Benchmark]: RCFGBuilder took 741.72 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 71.6 MB in the beginning and 106.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:34,965 INFO L168 Benchmark]: TraceAbstraction took 5281.84 ms. Allocated memory was 132.1 MB in the beginning and 163.6 MB in the end (delta: 31.5 MB). Free memory was 106.8 MB in the beginning and 115.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:34,966 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 163.6 MB. Free memory was 115.4 MB in the beginning and 114.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:34,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 102.8 MB. Free memory was 56.9 MB in the beginning and 56.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.49 ms. Allocated memory is still 102.8 MB. Free memory was 69.6 MB in the beginning and 75.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 73.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.55 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 71.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 741.72 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 71.6 MB in the beginning and 106.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5281.84 ms. Allocated memory was 132.1 MB in the beginning and 163.6 MB in the end (delta: 31.5 MB). Free memory was 106.8 MB in the beginning and 115.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.30 ms. Allocated memory is still 163.6 MB. Free memory was 115.4 MB in the beginning and 114.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 878 SDtfs, 777 SDslu, 3904 SDs, 0 SdLazy, 768 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=1, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 440 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:20:34,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 05:20:37,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:20:37,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:20:37,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:20:37,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:20:37,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:20:37,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:20:37,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:20:37,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:20:37,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:20:37,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:20:37,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:20:37,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:20:37,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:20:37,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:20:37,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:20:37,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:20:37,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:20:37,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:20:37,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:20:37,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:20:37,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:20:37,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:20:37,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:20:37,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:20:37,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:20:37,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:20:37,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:20:37,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:20:37,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:20:37,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:20:37,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:20:37,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:20:37,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:20:37,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:20:37,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:20:37,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:20:37,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:20:37,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:20:37,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:20:37,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:20:37,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:20:37,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:20:37,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:20:37,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:20:37,669 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:20:37,669 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:20:37,670 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:20:37,670 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:20:37,670 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:20:37,670 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:20:37,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:20:37,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:20:37,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:20:37,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:20:37,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:20:37,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:20:37,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:20:37,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:20:37,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:20:37,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:20:37,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:20:37,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:20:37,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:20:37,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:20:37,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:20:37,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:20:37,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:20:37,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:20:37,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:20:37,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:20:37,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:20:37,678 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:20:37,678 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:20:37,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:20:37,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:20:37,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:20:37,679 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_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c [2021-10-29 05:20:38,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:20:38,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:20:38,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:20:38,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:20:38,096 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:20:38,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-29 05:20:38,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/e5cc30fc5/0ea766830bfd4237be32e287d026a6a4/FLAG051986a62 [2021-10-29 05:20:38,831 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:20:38,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-29 05:20:38,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/e5cc30fc5/0ea766830bfd4237be32e287d026a6a4/FLAG051986a62 [2021-10-29 05:20:38,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/data/e5cc30fc5/0ea766830bfd4237be32e287d026a6a4 [2021-10-29 05:20:38,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:20:38,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:20:38,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:20:38,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:20:38,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:20:38,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:38" (1/1) ... [2021-10-29 05:20:38,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e43e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:38, skipping insertion in model container [2021-10-29 05:20:38,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:38" (1/1) ... [2021-10-29 05:20:38,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:20:38,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:20:39,076 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_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-29 05:20:39,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:20:39,169 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:20:39,181 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_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-29 05:20:39,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:20:39,225 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:20:39,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39 WrapperNode [2021-10-29 05:20:39,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:20:39,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:20:39,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:20:39,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:20:39,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:20:39,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:20:39,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:20:39,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:20:39,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:20:39,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:20:39,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:20:39,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:20:39,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (1/1) ... [2021-10-29 05:20:39,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:20:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:20:39,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:20:39,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:20:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:20:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:20:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:20:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:20:40,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:20:40,061 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-29 05:20:40,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:40 BoogieIcfgContainer [2021-10-29 05:20:40,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:20:40,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:20:40,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:20:40,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:20:40,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:20:38" (1/3) ... [2021-10-29 05:20:40,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43542709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:20:40, skipping insertion in model container [2021-10-29 05:20:40,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:39" (2/3) ... [2021-10-29 05:20:40,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43542709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:20:40, skipping insertion in model container [2021-10-29 05:20:40,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:40" (3/3) ... [2021-10-29 05:20:40,076 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-29 05:20:40,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:20:40,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 05:20:40,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:20:40,158 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, mAutomataTypeConcurrency=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 [2021-10-29 05:20:40,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 05:20:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) [2021-10-29 05:20:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:20:40,213 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:40,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:40,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2021-10-29 05:20:40,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:40,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172754198] [2021-10-29 05:20:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:40,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:40,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:40,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:20:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:40,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:20:40,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:40,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:40,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:40,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172754198] [2021-10-29 05:20:40,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172754198] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:40,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:40,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:20:40,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981333277] [2021-10-29 05:20:40,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:20:40,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:20:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:20:40,633 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-29 05:20:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:40,785 INFO L93 Difference]: Finished difference Result 231 states and 333 transitions. [2021-10-29 05:20:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:20:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-10-29 05:20:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:40,798 INFO L225 Difference]: With dead ends: 231 [2021-10-29 05:20:40,798 INFO L226 Difference]: Without dead ends: 139 [2021-10-29 05:20:40,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:20:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-29 05:20:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2021-10-29 05:20:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 85 states have internal predecessors, (115), 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) [2021-10-29 05:20:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2021-10-29 05:20:40,847 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2021-10-29 05:20:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:40,847 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2021-10-29 05:20:40,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-29 05:20:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2021-10-29 05:20:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:20:40,849 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:40,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:40,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:41,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:41,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1518313747, now seen corresponding path program 1 times [2021-10-29 05:20:41,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:41,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877990760] [2021-10-29 05:20:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:41,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:41,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:41,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:41,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:20:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:41,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:20:41,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:41,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:41,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:41,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877990760] [2021-10-29 05:20:41,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877990760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:41,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:41,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 05:20:41,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396899296] [2021-10-29 05:20:41,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:20:41,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:20:41,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:20:41,321 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:20:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:41,524 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2021-10-29 05:20:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:20:41,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 05:20:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:41,527 INFO L225 Difference]: With dead ends: 226 [2021-10-29 05:20:41,528 INFO L226 Difference]: Without dead ends: 200 [2021-10-29 05:20:41,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:20:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-29 05:20:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2021-10-29 05:20:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 118 states have internal predecessors, (162), 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) [2021-10-29 05:20:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-10-29 05:20:41,547 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2021-10-29 05:20:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:41,547 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-10-29 05:20:41,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:20:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-10-29 05:20:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:20:41,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:41,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:41,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:41,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:41,762 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2021-10-29 05:20:41,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:41,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445535707] [2021-10-29 05:20:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:41,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:41,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:41,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:20:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:41,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:20:41,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:41,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:42,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:42,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445535707] [2021-10-29 05:20:42,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445535707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:42,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:42,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-29 05:20:42,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556086130] [2021-10-29 05:20:42,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:20:42,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:20:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:20:42,037 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:20:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:42,341 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2021-10-29 05:20:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:20:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 05:20:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:42,344 INFO L225 Difference]: With dead ends: 214 [2021-10-29 05:20:42,345 INFO L226 Difference]: Without dead ends: 185 [2021-10-29 05:20:42,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:20:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-29 05:20:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2021-10-29 05:20:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 107 states have internal predecessors, (144), 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) [2021-10-29 05:20:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2021-10-29 05:20:42,389 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2021-10-29 05:20:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:42,390 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2021-10-29 05:20:42,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:20:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2021-10-29 05:20:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:20:42,392 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:42,392 INFO L513 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] [2021-10-29 05:20:42,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:42,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:42,602 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2021-10-29 05:20:42,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:42,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097217410] [2021-10-29 05:20:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:42,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:42,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:42,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:42,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:20:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:42,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:20:42,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:42,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:42,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:42,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097217410] [2021-10-29 05:20:42,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097217410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:42,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:42,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-29 05:20:42,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578197781] [2021-10-29 05:20:42,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:20:42,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:42,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:20:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:20:42,925 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-29 05:20:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:43,212 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2021-10-29 05:20:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:20:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 23 [2021-10-29 05:20:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:43,216 INFO L225 Difference]: With dead ends: 183 [2021-10-29 05:20:43,216 INFO L226 Difference]: Without dead ends: 179 [2021-10-29 05:20:43,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:20:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-29 05:20:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2021-10-29 05:20:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 118 states have (on average 1.4067796610169492) internal successors, (166), 124 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) [2021-10-29 05:20:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2021-10-29 05:20:43,247 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2021-10-29 05:20:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:43,248 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2021-10-29 05:20:43,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-29 05:20:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2021-10-29 05:20:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:20:43,252 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:43,253 INFO L513 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] [2021-10-29 05:20:43,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:43,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:43,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:43,472 INFO L85 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2021-10-29 05:20:43,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:43,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69953599] [2021-10-29 05:20:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:43,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:43,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:43,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:20:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:43,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:20:43,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:43,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:43,776 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:43,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69953599] [2021-10-29 05:20:43,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69953599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:43,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:43,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-29 05:20:43,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661010968] [2021-10-29 05:20:43,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:20:43,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:20:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:20:43,783 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-29 05:20:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:43,939 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2021-10-29 05:20:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:20:43,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-10-29 05:20:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:43,941 INFO L225 Difference]: With dead ends: 182 [2021-10-29 05:20:43,942 INFO L226 Difference]: Without dead ends: 149 [2021-10-29 05:20:43,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:20:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-29 05:20:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2021-10-29 05:20:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 118 states have internal predecessors, (156), 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) [2021-10-29 05:20:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2021-10-29 05:20:43,954 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2021-10-29 05:20:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:43,954 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2021-10-29 05:20:43,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-29 05:20:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2021-10-29 05:20:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:20:43,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:43,956 INFO L513 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] [2021-10-29 05:20:43,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:44,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:44,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2021-10-29 05:20:44,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:44,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33396881] [2021-10-29 05:20:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:44,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:44,169 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:44,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:20:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:44,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 05:20:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:44,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:44,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:44,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33396881] [2021-10-29 05:20:44,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33396881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:44,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:44,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-29 05:20:44,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972594683] [2021-10-29 05:20:44,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:20:44,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:44,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:20:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:20:44,492 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-10-29 05:20:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:45,161 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2021-10-29 05:20:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-29 05:20:45,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 23 [2021-10-29 05:20:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:45,164 INFO L225 Difference]: With dead ends: 369 [2021-10-29 05:20:45,164 INFO L226 Difference]: Without dead ends: 323 [2021-10-29 05:20:45,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-10-29 05:20:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-29 05:20:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2021-10-29 05:20:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 128 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) [2021-10-29 05:20:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2021-10-29 05:20:45,190 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2021-10-29 05:20:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:45,191 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-10-29 05:20:45,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-10-29 05:20:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2021-10-29 05:20:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:20:45,193 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:45,193 INFO L513 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] [2021-10-29 05:20:45,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-29 05:20:45,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:45,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:45,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash -120407082, now seen corresponding path program 1 times [2021-10-29 05:20:45,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:45,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412865820] [2021-10-29 05:20:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:45,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:45,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:45,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:20:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:45,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:20:45,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:45,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:45,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:45,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412865820] [2021-10-29 05:20:45,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412865820] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:45,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:45,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-29 05:20:45,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519727945] [2021-10-29 05:20:45,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:20:45,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:20:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:20:45,773 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-10-29 05:20:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:46,093 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2021-10-29 05:20:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:20:46,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 25 [2021-10-29 05:20:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:46,095 INFO L225 Difference]: With dead ends: 179 [2021-10-29 05:20:46,095 INFO L226 Difference]: Without dead ends: 174 [2021-10-29 05:20:46,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:20:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-29 05:20:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-29 05:20:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 141 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:20:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2021-10-29 05:20:46,113 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2021-10-29 05:20:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:46,115 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2021-10-29 05:20:46,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-10-29 05:20:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2021-10-29 05:20:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:20:46,117 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:46,117 INFO L513 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] [2021-10-29 05:20:46,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:46,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:46,332 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:46,333 INFO L85 PathProgramCache]: Analyzing trace with hash -118560040, now seen corresponding path program 1 times [2021-10-29 05:20:46,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:46,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508765135] [2021-10-29 05:20:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:46,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:46,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:46,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:46,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:20:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:20:46,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:20:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:20:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:46,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:20:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:20:46,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:20:46,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508765135] [2021-10-29 05:20:46,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508765135] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:20:46,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:20:46,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-29 05:20:46,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263408908] [2021-10-29 05:20:46,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:20:46,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:20:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:20:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:20:46,598 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-29 05:20:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:20:46,710 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2021-10-29 05:20:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:20:46,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 25 [2021-10-29 05:20:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:20:46,712 INFO L225 Difference]: With dead ends: 159 [2021-10-29 05:20:46,712 INFO L226 Difference]: Without dead ends: 140 [2021-10-29 05:20:46,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:20:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-29 05:20:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2021-10-29 05:20:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.36) internal successors, (170), 129 states have internal predecessors, (170), 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) [2021-10-29 05:20:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2021-10-29 05:20:46,723 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2021-10-29 05:20:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:20:46,724 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2021-10-29 05:20:46,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-29 05:20:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2021-10-29 05:20:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:20:46,725 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:20:46,726 INFO L513 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] [2021-10-29 05:20:46,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:46,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:46,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 05:20:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:20:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -390845998, now seen corresponding path program 1 times [2021-10-29 05:20:46,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:20:46,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749088871] [2021-10-29 05:20:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:20:46,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:20:46,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:20:46,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:20:46,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:20:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:20:47,068 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:20:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:20:47,147 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:20:47,147 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:20:47,148 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:20:47,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:20:47,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:20:47,363 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:20:47,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:20:47,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:20:47 BoogieIcfgContainer [2021-10-29 05:20:47,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:20:47,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:20:47,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:20:47,405 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:20:47,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:40" (3/4) ... [2021-10-29 05:20:47,407 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:20:47,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:20:47,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:20:47,465 INFO L168 Benchmark]: Toolchain (without parser) took 8593.92 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.4 MB in the beginning and 41.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:47,466 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:20:47,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.88 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 38.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:47,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.73 ms. Allocated memory is still 58.7 MB. Free memory was 37.9 MB in the beginning and 35.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:47,467 INFO L168 Benchmark]: Boogie Preprocessor took 81.86 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 33.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:47,468 INFO L168 Benchmark]: RCFGBuilder took 703.48 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.7 MB in the beginning and 43.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:47,468 INFO L168 Benchmark]: TraceAbstraction took 7336.75 ms. Allocated memory is still 71.3 MB. Free memory was 43.4 MB in the beginning and 45.0 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:20:47,469 INFO L168 Benchmark]: Witness Printer took 58.94 ms. Allocated memory is still 71.3 MB. Free memory was 44.5 MB in the beginning and 41.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:20:47,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.88 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 38.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.73 ms. Allocated memory is still 58.7 MB. Free memory was 37.9 MB in the beginning and 35.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.86 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 33.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 703.48 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.7 MB in the beginning and 43.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7336.75 ms. Allocated memory is still 71.3 MB. Free memory was 43.4 MB in the beginning and 45.0 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.94 ms. Allocated memory is still 71.3 MB. Free memory was 44.5 MB in the beginning and 41.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 44 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:20:47,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ea90d6-dae8-408f-9e2e-a2e3424acbf0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...