./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH --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 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:40,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:40,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:40,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:40,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:40,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:40,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:40,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:40,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:40,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:40,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:40,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:40,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:40,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:40,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:40,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:40,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:40,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:40,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:40,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:40,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:40,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:40,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:40,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:40,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:40,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:40,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:40,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:40,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:40,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:40,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:40,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:40,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:40,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:40,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:40,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:40,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:40,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:40,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:40,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:40,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:40,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:42:40,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:40,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:40,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:40,350 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:40,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:40,350 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:40,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:42:40,351 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:40,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:40,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:42:40,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:42:40,352 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:40,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:42:40,352 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:42:40,353 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:42:40,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:40,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:42:40,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:42:40,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:42:40,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:40,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:40,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:40,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:40,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:40,356 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:42:40,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:40,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:40,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:40,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:40,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:40,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:40,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:40,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:40,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:40,359 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:42:40,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:42:40,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:40,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:40,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:40,360 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2021-11-03 03:42:40,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:40,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:40,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:40,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:40,765 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:40,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-03 03:42:40,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/9981b699b/2784a7efe6cf40b790809381567b1a5c/FLAG9911936a6 [2021-11-03 03:42:41,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:41,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-03 03:42:41,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/9981b699b/2784a7efe6cf40b790809381567b1a5c/FLAG9911936a6 [2021-11-03 03:42:41,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/9981b699b/2784a7efe6cf40b790809381567b1a5c [2021-11-03 03:42:41,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:41,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:41,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:41,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:41,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:41,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:41" (1/1) ... [2021-11-03 03:42:41,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2bb02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:41, skipping insertion in model container [2021-11-03 03:42:41,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:41" (1/1) ... [2021-11-03 03:42:41,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:41,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:42,517 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-03 03:42:42,698 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-03 03:42:42,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:42,724 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:42:42,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@283fb3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:42, skipping insertion in model container [2021-11-03 03:42:42,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:42,726 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:42:42,728 INFO L168 Benchmark]: Toolchain (without parser) took 866.25 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.7 MB in the beginning and 65.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:42,729 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 61.6 MB in the beginning and 61.5 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:42,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 859.91 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.5 MB in the beginning and 65.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:42,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 61.6 MB in the beginning and 61.5 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 859.91 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.5 MB in the beginning and 65.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH --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 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:45,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:45,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:45,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:45,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:45,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:45,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:45,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:45,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:45,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:45,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:45,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:45,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:45,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:45,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:45,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:45,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:45,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:45,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:45,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:45,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:45,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:45,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:45,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:45,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:45,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:45,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:45,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:45,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:45,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:45,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:45,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:45,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:45,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:45,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:45,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:45,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:45,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:45,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:45,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:45,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:45,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:42:45,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:45,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:45,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:45,363 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:45,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:45,364 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:45,368 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:45,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:45,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:45,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:45,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:42:45,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:42:45,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:45,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:45,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:45,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:45,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:45,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:42:45,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:42:45,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:42:45,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:45,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:45,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:45,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:45,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:42:45,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:45,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:45,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:45,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:45,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:45,378 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:42:45,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:42:45,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:45,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:45,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:45,379 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2021-11-03 03:42:45,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:45,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:45,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:45,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:45,821 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:45,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-03 03:42:45,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/ca70e1937/2ec3299f37e243e684671529c5e2ba54/FLAGd077587d6 [2021-11-03 03:42:46,575 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:46,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-03 03:42:46,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/ca70e1937/2ec3299f37e243e684671529c5e2ba54/FLAGd077587d6 [2021-11-03 03:42:46,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/data/ca70e1937/2ec3299f37e243e684671529c5e2ba54 [2021-11-03 03:42:46,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:46,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:46,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:46,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:46,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:46,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:46" (1/1) ... [2021-11-03 03:42:46,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579987ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:46, skipping insertion in model container [2021-11-03 03:42:46,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:46" (1/1) ... [2021-11-03 03:42:46,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:46,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:47,455 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-03 03:42:47,652 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-03 03:42:47,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:47,708 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:42:47,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:47,770 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-03 03:42:47,850 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-03 03:42:47,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:47,882 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:42:47,924 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-03 03:42:47,964 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_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-03 03:42:47,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:48,034 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:42:48,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48 WrapperNode [2021-11-03 03:42:48,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:48,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:48,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:42:48,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:42:48,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:48,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:42:48,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:42:48,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:42:48,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:42:48,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:42:48,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:42:48,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:42:48,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (1/1) ... [2021-11-03 03:42:48,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:48,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:42:48,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:42:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:42:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:42:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:42:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:42:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:42:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:42:55,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:42:55,628 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-03 03:42:55,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:55 BoogieIcfgContainer [2021-11-03 03:42:55,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:42:55,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:42:55,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:42:55,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:42:55,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:46" (1/3) ... [2021-11-03 03:42:55,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404cc151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:55, skipping insertion in model container [2021-11-03 03:42:55,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:48" (2/3) ... [2021-11-03 03:42:55,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404cc151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:55, skipping insertion in model container [2021-11-03 03:42:55,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:55" (3/3) ... [2021-11-03 03:42:55,641 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-2.i [2021-11-03 03:42:55,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:42:55,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 03:42:55,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:42:55,744 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:42:55,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 03:42:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:42:55,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:55,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:55,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:42:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-03 03:42:55,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:55,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973872522] [2021-11-03 03:42:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:55,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:55,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:55,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:55,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:42:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:56,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:42:56,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:56,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:56,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:56,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973872522] [2021-11-03 03:42:56,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973872522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:56,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:56,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:42:56,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295552366] [2021-11-03 03:42:56,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:42:56,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:56,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:42:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:42:56,192 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:56,231 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-03 03:42:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:42:56,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-03 03:42:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:56,245 INFO L225 Difference]: With dead ends: 410 [2021-11-03 03:42:56,245 INFO L226 Difference]: Without dead ends: 173 [2021-11-03 03:42:56,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:42:56,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-03 03:42:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-03 03:42:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-03 03:42:56,294 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-03 03:42:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:56,295 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-03 03:42:56,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-03 03:42:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:42:56,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:56,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:56,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:56,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:42:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-03 03:42:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:56,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654934000] [2021-11-03 03:42:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:56,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:56,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:56,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:56,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:42:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:42:56,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:56,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:57,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:57,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654934000] [2021-11-03 03:42:57,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654934000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:57,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:57,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:42:57,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316796072] [2021-11-03 03:42:57,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:57,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:57,115 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:57,346 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2021-11-03 03:42:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:57,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:42:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:57,352 INFO L225 Difference]: With dead ends: 264 [2021-11-03 03:42:57,353 INFO L226 Difference]: Without dead ends: 182 [2021-11-03 03:42:57,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:42:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-03 03:42:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-03 03:42:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 175 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 220 transitions. [2021-11-03 03:42:57,367 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 220 transitions. Word has length 44 [2021-11-03 03:42:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:57,368 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 220 transitions. [2021-11-03 03:42:57,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 220 transitions. [2021-11-03 03:42:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:42:57,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:57,370 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:57,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:57,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:57,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:42:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash -317554283, now seen corresponding path program 1 times [2021-11-03 03:42:57,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:57,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889000345] [2021-11-03 03:42:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:57,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:57,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:57,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:57,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:42:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:57,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:42:57,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:58,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:58,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:58,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889000345] [2021-11-03 03:42:58,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889000345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:58,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:58,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 03:42:58,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041909665] [2021-11-03 03:42:58,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:42:58,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:42:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:42:58,802 INFO L87 Difference]: Start difference. First operand 176 states and 220 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:58,944 INFO L93 Difference]: Finished difference Result 260 states and 320 transitions. [2021-11-03 03:42:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:42:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:42:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:58,948 INFO L225 Difference]: With dead ends: 260 [2021-11-03 03:42:58,948 INFO L226 Difference]: Without dead ends: 175 [2021-11-03 03:42:58,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:42:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-03 03:42:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-11-03 03:42:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 169 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-11-03 03:42:58,974 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 44 [2021-11-03 03:42:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:58,975 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-11-03 03:42:58,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-11-03 03:42:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:42:58,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:58,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:58,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:42:59,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:59,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:42:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash -575719721, now seen corresponding path program 1 times [2021-11-03 03:42:59,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:59,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041134149] [2021-11-03 03:42:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:59,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:59,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:59,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:42:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:59,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:42:59,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:59,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:42:59,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:42:59,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:42:59,678 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:42:59,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 03:42:59,762 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:42:59,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 03:42:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:59,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:00,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:00,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041134149] [2021-11-03 03:43:00,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041134149] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:00,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:00,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:43:00,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976726817] [2021-11-03 03:43:00,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:43:00,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:43:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:43:00,093 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:05,950 INFO L93 Difference]: Finished difference Result 447 states and 536 transitions. [2021-11-03 03:43:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:43:05,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:43:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:05,955 INFO L225 Difference]: With dead ends: 447 [2021-11-03 03:43:05,955 INFO L226 Difference]: Without dead ends: 367 [2021-11-03 03:43:05,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:43:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-03 03:43:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 172. [2021-11-03 03:43:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.2771084337349397) internal successors, (212), 171 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-03 03:43:05,971 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 44 [2021-11-03 03:43:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:05,972 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-03 03:43:05,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-03 03:43:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:43:05,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:05,977 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:05,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:06,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:43:06,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:06,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1988408325, now seen corresponding path program 1 times [2021-11-03 03:43:06,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:06,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582245053] [2021-11-03 03:43:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:06,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:06,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:06,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:06,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:43:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:06,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:06,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:06,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:07,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:07,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582245053] [2021-11-03 03:43:07,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582245053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:07,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:07,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:43:07,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944427981] [2021-11-03 03:43:07,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:43:07,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:43:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:43:07,225 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:07,382 INFO L93 Difference]: Finished difference Result 349 states and 432 transitions. [2021-11-03 03:43:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:43:07,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 96 [2021-11-03 03:43:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:07,385 INFO L225 Difference]: With dead ends: 349 [2021-11-03 03:43:07,385 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 03:43:07,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:43:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 03:43:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-11-03 03:43:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 174 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2021-11-03 03:43:07,397 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 96 [2021-11-03 03:43:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:07,398 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2021-11-03 03:43:07,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2021-11-03 03:43:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:43:07,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:07,403 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:07,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:07,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:43:07,614 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-03 03:43:07,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:07,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741904114] [2021-11-03 03:43:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:07,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:07,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:43:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:08,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:08,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:08,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:09,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:09,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741904114] [2021-11-03 03:43:09,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741904114] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:09,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:09,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:43:09,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458905925] [2021-11-03 03:43:09,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:43:09,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:43:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:43:09,387 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:10,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:10,239 INFO L93 Difference]: Finished difference Result 450 states and 525 transitions. [2021-11-03 03:43:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:43:10,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-03 03:43:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:10,242 INFO L225 Difference]: With dead ends: 450 [2021-11-03 03:43:10,242 INFO L226 Difference]: Without dead ends: 279 [2021-11-03 03:43:10,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:43:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-03 03:43:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 267. [2021-11-03 03:43:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 261 states have (on average 1.2030651340996168) internal successors, (314), 266 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 314 transitions. [2021-11-03 03:43:10,257 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 314 transitions. Word has length 96 [2021-11-03 03:43:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:10,258 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 314 transitions. [2021-11-03 03:43:10,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 314 transitions. [2021-11-03 03:43:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 03:43:10,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:10,262 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:10,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:10,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:43:10,478 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-03 03:43:10,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:10,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597688721] [2021-11-03 03:43:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:10,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:10,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:10,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:43:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:11,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:11,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:11,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:43:11,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:11,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597688721] [2021-11-03 03:43:11,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597688721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:11,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:11,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:43:11,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423604759] [2021-11-03 03:43:11,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:43:11,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:43:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:43:11,613 INFO L87 Difference]: Start difference. First operand 267 states and 314 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:11,696 INFO L93 Difference]: Finished difference Result 492 states and 585 transitions. [2021-11-03 03:43:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:43:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-03 03:43:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:11,699 INFO L225 Difference]: With dead ends: 492 [2021-11-03 03:43:11,699 INFO L226 Difference]: Without dead ends: 270 [2021-11-03 03:43:11,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:43:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-03 03:43:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-03 03:43:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 264 states have (on average 1.2007575757575757) internal successors, (317), 269 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 317 transitions. [2021-11-03 03:43:11,712 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 317 transitions. Word has length 103 [2021-11-03 03:43:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:11,712 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 317 transitions. [2021-11-03 03:43:11,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 317 transitions. [2021-11-03 03:43:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:43:11,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:11,715 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:11,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:11,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:43:11,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:11,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash -786182228, now seen corresponding path program 1 times [2021-11-03 03:43:11,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:11,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544426769] [2021-11-03 03:43:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:11,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:11,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:11,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:11,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:43:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:12,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:43:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:43:12,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:43:13,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:13,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544426769] [2021-11-03 03:43:13,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544426769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:13,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1712274735] [2021-11-03 03:43:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:13,208 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:13,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:43:13,213 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:43:13,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 03:43:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:13,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:13,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 03:43:14,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 03:43:14,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1712274735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:14,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:43:14,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-03 03:43:14,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868672896] [2021-11-03 03:43:14,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:43:14,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:43:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:43:14,909 INFO L87 Difference]: Start difference. First operand 270 states and 317 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:18,500 INFO L93 Difference]: Finished difference Result 444 states and 523 transitions. [2021-11-03 03:43:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:43:18,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 03:43:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:18,505 INFO L225 Difference]: With dead ends: 444 [2021-11-03 03:43:18,505 INFO L226 Difference]: Without dead ends: 219 [2021-11-03 03:43:18,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-03 03:43:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-03 03:43:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.187793427230047) internal successors, (253), 218 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2021-11-03 03:43:18,517 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 106 [2021-11-03 03:43:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:18,518 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2021-11-03 03:43:18,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2021-11-03 03:43:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 03:43:18,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:18,521 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:18,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:18,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:18,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:18,943 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash 530495470, now seen corresponding path program 1 times [2021-11-03 03:43:18,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:18,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160872727] [2021-11-03 03:43:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:18,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:18,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:18,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:43:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:19,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:43:19,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:43:19,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:43:20,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:20,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160872727] [2021-11-03 03:43:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160872727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:20,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1346566704] [2021-11-03 03:43:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:20,302 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:20,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:43:20,314 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:43:20,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 03:43:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:21,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:43:21,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:43:21,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:43:21,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1346566704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:21,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277707605] [2021-11-03 03:43:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:21,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:43:21,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:21,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:43:21,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 03:43:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:22,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:43:22,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:43:22,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:43:23,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277707605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:23,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:43:23,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 03:43:23,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415870449] [2021-11-03 03:43:23,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:43:23,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:23,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:43:23,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:43:23,118 INFO L87 Difference]: Start difference. First operand 219 states and 253 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:23,391 INFO L93 Difference]: Finished difference Result 396 states and 467 transitions. [2021-11-03 03:43:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:43:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 03:43:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:23,395 INFO L225 Difference]: With dead ends: 396 [2021-11-03 03:43:23,395 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 03:43:23,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:43:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 03:43:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 03:43:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 221 states have (on average 1.1809954751131222) internal successors, (261), 226 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 261 transitions. [2021-11-03 03:43:23,407 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 261 transitions. Word has length 113 [2021-11-03 03:43:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:23,408 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 261 transitions. [2021-11-03 03:43:23,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 261 transitions. [2021-11-03 03:43:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 03:43:23,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:23,410 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:23,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:23,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:23,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:24,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:24,038 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:24,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1097325138, now seen corresponding path program 2 times [2021-11-03 03:43:24,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:24,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938175817] [2021-11-03 03:43:24,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:43:24,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:24,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:24,040 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:24,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:43:24,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:43:24,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:43:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:43:25,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:43:26,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:26,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938175817] [2021-11-03 03:43:26,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938175817] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:26,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [492516162] [2021-11-03 03:43:26,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:43:26,153 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:26,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:43:26,154 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:43:26,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 03:43:27,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:43:27,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:27,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:43:27,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:43:28,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:43:28,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [492516162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:28,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140374443] [2021-11-03 03:43:28,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:43:28,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:43:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:28,500 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:43:28,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 03:43:29,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:43:29,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:29,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:43:29,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:43:30,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:43:31,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140374443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:31,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:43:31,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-03 03:43:31,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235329930] [2021-11-03 03:43:31,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 03:43:31,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:31,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 03:43:31,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:43:31,460 INFO L87 Difference]: Start difference. First operand 227 states and 261 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:35,844 INFO L93 Difference]: Finished difference Result 583 states and 695 transitions. [2021-11-03 03:43:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:43:35,847 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-03 03:43:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:35,849 INFO L225 Difference]: With dead ends: 583 [2021-11-03 03:43:35,850 INFO L226 Difference]: Without dead ends: 410 [2021-11-03 03:43:35,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 03:43:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-03 03:43:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2021-11-03 03:43:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 243 states have (on average 1.168724279835391) internal successors, (284), 248 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2021-11-03 03:43:35,869 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 121 [2021-11-03 03:43:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:35,869 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2021-11-03 03:43:35,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2021-11-03 03:43:35,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 03:43:35,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:35,872 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:35,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:36,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:36,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:43:36,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:36,494 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:43:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1558699730, now seen corresponding path program 3 times [2021-11-03 03:43:36,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:36,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183701327] [2021-11-03 03:43:36,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:43:36,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:36,498 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:36,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:43:41,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:43:41,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 03:43:41,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:43:41,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:43:43,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:43,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183701327] [2021-11-03 03:43:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183701327] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:43,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1783434372] [2021-11-03 03:43:43,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:43:43,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:43,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:43:43,675 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:43:43,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 03:44:31,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:44:31,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:44:31,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:44:31,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:44:31,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:44:34,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1783434372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:44:34,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677156173] [2021-11-03 03:44:34,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:44:34,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:44:34,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:44:34,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:44:34,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c40f8e-abcc-4ddf-be11-8f56cb59ebcf/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process