./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 ....................................................................................................................................................................................................................................................................................................................................................................... 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:20:25,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:20:25,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:20:25,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:20:25,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:20:25,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:20:25,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:20:25,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:20:25,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:20:25,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:20:25,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:20:25,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:20:25,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:20:25,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:20:25,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:20:25,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:20:25,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:20:25,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:20:25,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:20:25,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:20:25,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:20:25,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:20:25,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:20:25,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:20:25,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:20:25,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:20:25,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:20:25,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:20:25,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:20:25,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:20:25,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:20:25,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:20:25,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:20:25,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:20:25,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:20:25,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:20:25,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:20:25,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:20:25,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:20:25,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:20:25,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:20:25,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:20:25,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:20:25,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:20:25,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:20:25,220 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:20:25,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:20:25,221 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:20:25,221 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:20:25,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:20:25,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:20:25,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:20:25,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:20:25,232 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:20:25,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:20:25,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:20:25,233 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:20:25,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:20:25,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:20:25,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:20:25,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:20:25,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:20:25,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:20:25,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:20:25,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:20:25,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:20:25,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:20:25,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:20:25,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:20:25,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:20:25,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:20:25,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:20:25,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:20:25,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:20:25,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:20:25,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:20:25,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:20:25,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:20:25,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:20:25,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:20:25,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:20:25,242 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 [2021-10-16 02:20:25,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:20:25,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:20:25,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:20:25,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:20:25,618 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:20:25,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-16 02:20:25,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/16d39f523/cb72767c4ec9474c908fb1205b84479e/FLAG962fde0e4 [2021-10-16 02:20:26,258 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:20:26,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-16 02:20:26,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/16d39f523/cb72767c4ec9474c908fb1205b84479e/FLAG962fde0e4 [2021-10-16 02:20:26,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/16d39f523/cb72767c4ec9474c908fb1205b84479e [2021-10-16 02:20:26,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:20:26,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:20:26,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:20:26,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:20:26,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:20:26,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:26" (1/1) ... [2021-10-16 02:20:26,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1c35f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26, skipping insertion in model container [2021-10-16 02:20:26,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:26" (1/1) ... [2021-10-16 02:20:26,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:20:26,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:20:26,966 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-16 02:20:26,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:20:26,987 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:20:27,079 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-16 02:20:27,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:20:27,101 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:20:27,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27 WrapperNode [2021-10-16 02:20:27,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:20:27,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:20:27,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:20:27,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:20:27,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:20:27,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:20:27,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:20:27,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:20:27,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:20:27,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:20:27,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:20:27,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:20:27,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2021-10-16 02:20:27,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:20:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:27,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:20:27,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:20:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:20:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-16 02:20:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:20:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:20:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:20:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:20:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:20:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:20:28,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:20:28,643 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:20:28,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:28 BoogieIcfgContainer [2021-10-16 02:20:28,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:20:28,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:20:28,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:20:28,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:20:28,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:26" (1/3) ... [2021-10-16 02:20:28,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a784af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:28, skipping insertion in model container [2021-10-16 02:20:28,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (2/3) ... [2021-10-16 02:20:28,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a784af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:28, skipping insertion in model container [2021-10-16 02:20:28,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:28" (3/3) ... [2021-10-16 02:20:28,658 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-10-16 02:20:28,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:20:28,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:20:28,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:20:28,755 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:20:28,756 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:20:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) [2021-10-16 02:20:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:20:28,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:28,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:28,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:28,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1202647943, now seen corresponding path program 1 times [2021-10-16 02:20:28,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:20:28,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756276068] [2021-10-16 02:20:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:28,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:20:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:29,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:20:29,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756276068] [2021-10-16 02:20:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756276068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:29,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:29,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:20:29,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353209795] [2021-10-16 02:20:29,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:20:29,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:20:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:20:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:29,432 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:29,507 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-10-16 02:20:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:20:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-16 02:20:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:29,520 INFO L225 Difference]: With dead ends: 27 [2021-10-16 02:20:29,520 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:20:29,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:20:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:20:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-10-16 02:20:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2021-10-16 02:20:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-16 02:20:29,561 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-10-16 02:20:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:29,562 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-16 02:20:29,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-16 02:20:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:20:29,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:29,564 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:29,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:20:29,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash 507664458, now seen corresponding path program 1 times [2021-10-16 02:20:29,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:20:29,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330032277] [2021-10-16 02:20:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:29,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:20:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:29,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:20:29,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330032277] [2021-10-16 02:20:29,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330032277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:20:29,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242718253] [2021-10-16 02:20:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:29,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:29,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:29,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:20:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:20:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:30,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:20:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:30,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:30,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242718253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:30,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1085725509] [2021-10-16 02:20:30,399 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:20:30,400 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:20:30,406 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:20:30,412 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:20:30,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:20:30,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:30,492 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:20:30,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:30,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 02:20:30,501 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:20:30,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:30,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-16 02:20:30,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-10-16 02:20:30,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:20:30,946 INFO L354 Elim1Store]: treesize reduction 456, result has 6.4 percent of original size [2021-10-16 02:20:30,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 135 treesize of output 134 [2021-10-16 02:20:30,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:30,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-16 02:20:30,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:30,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-16 02:20:30,973 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:20:30,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:20:31,038 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:31,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:31,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-10-16 02:20:31,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:20:31,062 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:355, output treesize:321 [2021-10-16 02:20:31,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:31,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:31,280 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_19| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:20:31,285 INFO L168 Benchmark]: Toolchain (without parser) took 4706.16 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 54.8 MB in the beginning and 49.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:20:31,285 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:20:31,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.13 ms. Allocated memory is still 96.5 MB. Free memory was 54.7 MB in the beginning and 65.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:20:31,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.94 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 61.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:20:31,288 INFO L168 Benchmark]: Boogie Preprocessor took 90.24 ms. Allocated memory is still 96.5 MB. Free memory was 61.6 MB in the beginning and 58.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:20:31,288 INFO L168 Benchmark]: RCFGBuilder took 1349.78 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.6 MB in the beginning and 58.0 MB in the end (delta: 570.4 kB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:20:31,289 INFO L168 Benchmark]: TraceAbstraction took 2634.04 ms. Allocated memory is still 117.4 MB. Free memory was 58.0 MB in the beginning and 49.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:20:31,293 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 96.5 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 516.13 ms. Allocated memory is still 96.5 MB. Free memory was 54.7 MB in the beginning and 65.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.94 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 61.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.24 ms. Allocated memory is still 96.5 MB. Free memory was 61.6 MB in the beginning and 58.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1349.78 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.6 MB in the beginning and 58.0 MB in the end (delta: 570.4 kB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2634.04 ms. Allocated memory is still 117.4 MB. Free memory was 58.0 MB in the beginning and 49.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_19| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_19|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:20:31,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:20:34,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:20:34,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:20:34,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:20:34,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:20:34,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:20:34,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:20:34,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:20:34,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:20:34,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:20:34,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:20:34,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:20:34,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:20:34,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:20:34,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:20:34,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:20:34,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:20:34,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:20:34,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:20:34,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:20:34,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:20:34,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:20:34,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:20:34,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:20:34,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:20:34,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:20:34,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:20:34,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:20:34,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:20:34,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:20:34,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:20:34,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:20:34,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:20:34,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:20:34,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:20:34,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:20:34,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:20:34,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:20:34,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:20:34,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:20:34,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:20:34,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:20:34,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:20:34,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:20:34,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:20:34,501 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:20:34,501 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:20:34,501 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:20:34,502 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:20:34,502 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:20:34,502 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:20:34,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:20:34,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:20:34,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:20:34,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:20:34,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:20:34,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:20:34,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:20:34,507 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:20:34,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:20:34,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:20:34,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:20:34,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:20:34,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:20:34,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:20:34,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:20:34,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:20:34,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:20:34,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:20:34,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:20:34,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:20:34,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:20:34,511 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:20:34,512 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:34,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:20:34,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:20:34,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:20:34,513 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 [2021-10-16 02:20:35,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:20:35,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:20:35,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:20:35,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:20:35,089 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:20:35,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-16 02:20:35,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/188541977/a3586423aeff45ed88dddf3aab9a4d61/FLAGeac740e3e [2021-10-16 02:20:35,922 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:20:35,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-16 02:20:35,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/188541977/a3586423aeff45ed88dddf3aab9a4d61/FLAGeac740e3e [2021-10-16 02:20:36,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/data/188541977/a3586423aeff45ed88dddf3aab9a4d61 [2021-10-16 02:20:36,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:20:36,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:20:36,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:20:36,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:20:36,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:20:36,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b43b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36, skipping insertion in model container [2021-10-16 02:20:36,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:20:36,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:20:36,640 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-16 02:20:36,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:20:36,696 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:20:36,791 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_a0be9c55-71ff-4e6d-a507-045f87fe571a/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-16 02:20:36,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:20:36,813 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:20:36,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36 WrapperNode [2021-10-16 02:20:36,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:20:36,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:20:36,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:20:36,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:20:36,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:20:36,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:20:36,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:20:36,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:20:36,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:36,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:37,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:37,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:37,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:37,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:20:37,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:20:37,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:20:37,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:20:37,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2021-10-16 02:20:37,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:20:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:37,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:20:37,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:20:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:20:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-16 02:20:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:20:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-16 02:20:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:20:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:20:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:20:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:20:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:20:38,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:20:38,490 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:20:38,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:38 BoogieIcfgContainer [2021-10-16 02:20:38,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:20:38,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:20:38,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:20:38,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:20:38,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:36" (1/3) ... [2021-10-16 02:20:38,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2104455c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:38, skipping insertion in model container [2021-10-16 02:20:38,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (2/3) ... [2021-10-16 02:20:38,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2104455c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:38, skipping insertion in model container [2021-10-16 02:20:38,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:38" (3/3) ... [2021-10-16 02:20:38,502 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-10-16 02:20:38,509 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:20:38,510 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:20:38,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:20:38,607 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:20:38,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:20:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:20:38,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:38,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:38,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2021-10-16 02:20:38,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:38,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914777261] [2021-10-16 02:20:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:38,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:38,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:38,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:38,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:20:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:39,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:20:39,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:39,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:39,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:39,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914777261] [2021-10-16 02:20:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914777261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:39,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:20:39,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157002954] [2021-10-16 02:20:39,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:20:39,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:39,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:20:39,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:20:39,423 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:39,590 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-10-16 02:20:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:20:39,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 8 [2021-10-16 02:20:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:39,602 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:20:39,603 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 02:20:39,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:20:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 02:20:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-16 02:20:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-16 02:20:39,638 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2021-10-16 02:20:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:39,638 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-16 02:20:39,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-16 02:20:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:20:39,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:39,640 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:39,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:20:39,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:20:39,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 1 times [2021-10-16 02:20:39,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:39,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878551907] [2021-10-16 02:20:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:39,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:39,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:39,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:20:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:40,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:20:40,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:40,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:40,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:40,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878551907] [2021-10-16 02:20:40,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878551907] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:40,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290467818] [2021-10-16 02:20:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:40,561 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:40,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:20:40,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:20:40,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-16 02:20:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:20:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:41,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:41,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1290467818] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:41,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315880233] [2021-10-16 02:20:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:41,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:41,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:20:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:20:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:41,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:20:41,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:41,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:42,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315880233] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:42,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:20:42,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 8] total 14 [2021-10-16 02:20:42,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482110383] [2021-10-16 02:20:42,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:20:42,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:20:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:20:42,114 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:42,785 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-16 02:20:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:20:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:20:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:42,787 INFO L225 Difference]: With dead ends: 44 [2021-10-16 02:20:42,788 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 02:20:42,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 406.3ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:20:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 02:20:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-16 02:20:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-16 02:20:42,798 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 18 [2021-10-16 02:20:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:42,799 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-16 02:20:42,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-16 02:20:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 02:20:42,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:42,802 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:42,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:43,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:20:43,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-10-16 02:20:43,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:43,416 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:43,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:43,416 INFO L82 PathProgramCache]: Analyzing trace with hash 584112597, now seen corresponding path program 2 times [2021-10-16 02:20:43,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:43,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66890871] [2021-10-16 02:20:43,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:20:43,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:43,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:43,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:43,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:20:45,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:20:45,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:45,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:20:45,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:45,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:46,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:46,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66890871] [2021-10-16 02:20:46,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66890871] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:46,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1433007210] [2021-10-16 02:20:46,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:20:46,177 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:46,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:20:46,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:20:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:20:47,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:20:47,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:47,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:20:47,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:47,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:47,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1433007210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:47,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805371028] [2021-10-16 02:20:47,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:20:47,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:47,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:47,870 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:20:47,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:20:48,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:20:48,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:48,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:20:48,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:48,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:49,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805371028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:49,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:20:49,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 12] total 26 [2021-10-16 02:20:49,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98360894] [2021-10-16 02:20:49,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-16 02:20:49,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-16 02:20:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-16 02:20:49,498 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:51,521 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-10-16 02:20:51,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:20:51,523 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 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 38 [2021-10-16 02:20:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:51,525 INFO L225 Difference]: With dead ends: 84 [2021-10-16 02:20:51,525 INFO L226 Difference]: Without dead ends: 81 [2021-10-16 02:20:51,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1374.0ms TimeCoverageRelationStatistics Valid=519, Invalid=1203, Unknown=0, NotChecked=0, Total=1722 [2021-10-16 02:20:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-16 02:20:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-10-16 02:20:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-10-16 02:20:51,541 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 38 [2021-10-16 02:20:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:51,542 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-10-16 02:20:51,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-10-16 02:20:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-16 02:20:51,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:51,547 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:51,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:51,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-16 02:20:51,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:52,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:20:52,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1711175595, now seen corresponding path program 3 times [2021-10-16 02:20:52,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:52,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446070158] [2021-10-16 02:20:52,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:20:52,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:52,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:52,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:52,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:20:54,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:20:54,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:54,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:20:54,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:55,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:20:55,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:20:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-16 02:20:55,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-16 02:20:57,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:57,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446070158] [2021-10-16 02:20:57,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446070158] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:20:57,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456404415] [2021-10-16 02:20:57,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:20:57,734 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:57,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:20:57,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:20:57,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:20:59,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:20:59,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:20:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:20:59,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:21:00,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:21:00,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:21:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-16 02:21:00,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:21:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-16 02:21:02,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [456404415] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:21:02,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625844537] [2021-10-16 02:21:02,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:21:02,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:21:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:21:02,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:21:02,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:21:03,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:21:03,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:21:03,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:21:03,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:21:04,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:21:04,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:21:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-16 02:21:04,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:21:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-16 02:21:06,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625844537] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:21:06,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:21:06,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2021-10-16 02:21:06,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435854608] [2021-10-16 02:21:06,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:21:06,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:21:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:21:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:21:06,168 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:07,035 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-10-16 02:21:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:21:07,036 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 78 [2021-10-16 02:21:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:07,037 INFO L225 Difference]: With dead ends: 79 [2021-10-16 02:21:07,038 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:21:07,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 865.8ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:21:07,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:21:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:21:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:21:07,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-10-16 02:21:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:07,040 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:21:07,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:21:07,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:21:07,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:21:07,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:07,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:07,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:07,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:21:07,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:21:07,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:07,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:21:08,038 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2021-10-16 02:21:08,039 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2021-10-16 02:21:08,040 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:21:08,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:21:08,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:21:08,040 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2021-10-16 02:21:08,040 INFO L853 garLoopResultBuilder]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv0 32))) (.cse2 (bvult ~Id_MCDC_93~0 (_ bv42 32))) (.cse1 (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (bvadd |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv492 32))) (_ bv0 32)))) (or (and (= ~Id_MCDC_93~0 (_ bv0 32)) .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv0 32)) .cse1) (and .cse0 .cse2 (not (= (bvmul (_ bv12 32) ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (_ bv504 32))) (bvult (bvadd (_ bv4294967295 32) ~Id_MCDC_93~0) (_ bv42 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (_ bv42 32)) .cse1) (and .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv1 32)) .cse2 .cse1))) [2021-10-16 02:21:08,041 INFO L860 garLoopResultBuilder]: At program point L233(lines 133 237) the Hoare annotation is: true [2021-10-16 02:21:08,047 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:21:08,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:21:08 BoogieIcfgContainer [2021-10-16 02:21:08,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:21:08,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:21:08,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:21:08,077 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:21:08,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:38" (3/4) ... [2021-10-16 02:21:08,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:21:08,106 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-16 02:21:08,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:21:08,109 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-16 02:21:08,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:21:08,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:21:08,506 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:21:08,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:21:08,508 INFO L168 Benchmark]: Toolchain (without parser) took 32300.68 ms. Allocated memory was 56.6 MB in the beginning and 148.9 MB in the end (delta: 92.3 MB). Free memory was 33.8 MB in the beginning and 90.4 MB in the end (delta: -56.6 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,508 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:21:08,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.08 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 33.6 MB in the beginning and 55.0 MB in the end (delta: -21.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 147.46 ms. Allocated memory is still 79.7 MB. Free memory was 54.8 MB in the beginning and 51.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,510 INFO L168 Benchmark]: Boogie Preprocessor took 84.86 ms. Allocated memory is still 79.7 MB. Free memory was 51.2 MB in the beginning and 47.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,511 INFO L168 Benchmark]: RCFGBuilder took 1443.34 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 39.9 MB in the end (delta: 7.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,511 INFO L168 Benchmark]: TraceAbstraction took 29580.99 ms. Allocated memory was 79.7 MB in the beginning and 148.9 MB in the end (delta: 69.2 MB). Free memory was 39.5 MB in the beginning and 82.5 MB in the end (delta: -43.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,512 INFO L168 Benchmark]: Witness Printer took 430.39 ms. Allocated memory is still 148.9 MB. Free memory was 82.5 MB in the beginning and 90.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:21:08,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.08 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 33.6 MB in the beginning and 55.0 MB in the end (delta: -21.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 147.46 ms. Allocated memory is still 79.7 MB. Free memory was 54.8 MB in the beginning and 51.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.86 ms. Allocated memory is still 79.7 MB. Free memory was 51.2 MB in the beginning and 47.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1443.34 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 39.9 MB in the end (delta: 7.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29580.99 ms. Allocated memory was 79.7 MB in the beginning and 148.9 MB in the end (delta: 69.2 MB). Free memory was 39.5 MB in the beginning and 82.5 MB in the end (delta: -43.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * Witness Printer took 430.39 ms. Allocated memory is still 148.9 MB. Free memory was 82.5 MB in the beginning and 90.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 221]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29451.3ms, OverallIterations: 4, TraceHistogramMax: 15, EmptinessCheckTime: 34.3ms, AutomataDifference: 3788.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 387.7ms, InitialAbstractionConstructionTime: 21.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 266 SDslu, 104 SDs, 0 SdLazy, 504 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2021.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 833 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2735.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=3, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 21 NumberOfFragments, 72 HoareAnnotationTreeSize, 2 FomulaSimplifications, 547 FormulaSimplificationTreeSizeReduction, 140.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 240.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 471.7ms SsaConstructionTime, 7260.4ms SatisfiabilityAnalysisTime, 13243.6ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 800 ConstructedInterpolants, 198 QuantifiedInterpolants, 8886 SizeOfPredicates, 47 NumberOfNonLiveVariables, 2400 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 2535/3606 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((Id_MCDC_93 == 0bv32 && Id_MCDC_89__Id_MCDC_95 == 0bv32) && Id_MCDC_89__Id_MCDC_96 == 0bv32) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32) || (((((Id_MCDC_89__Id_MCDC_95 == 0bv32 && ~bvult32(Id_MCDC_93, 42bv32)) && !(~bvmul32(12bv32, Id_MCDC_89__Id_MCDC_96) == 504bv32)) && ~bvult32(~bvadd64(4294967295bv32, Id_MCDC_93), 42bv32)) && ~bvult32(~bvadd64(4294967295bv32, Id_MCDC_89__Id_MCDC_96), 42bv32)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32)) || (((Id_MCDC_89__Id_MCDC_95 == 0bv32 && Id_MCDC_89__Id_MCDC_96 == 1bv32) && ~bvult32(Id_MCDC_93, 42bv32)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32) - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:21:08,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0be9c55-71ff-4e6d-a507-045f87fe571a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...