./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8 --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 d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:14:41,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:14:41,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:14:41,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:14:41,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:14:41,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:14:41,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:14:41,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:14:41,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:14:41,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:14:41,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:14:41,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:14:41,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:14:41,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:14:41,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:14:41,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:14:41,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:14:41,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:14:41,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:14:41,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:14:41,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:14:41,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:14:41,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:14:41,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:14:41,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:14:41,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:14:41,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:14:41,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:14:41,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:14:41,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:14:41,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:14:41,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:14:41,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:14:41,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:14:41,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:14:41,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:14:41,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:14:41,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:14:41,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:14:41,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:14:41,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:14:41,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:14:41,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:14:41,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:14:41,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:14:41,224 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:14:41,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:14:41,224 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:14:41,225 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:14:41,225 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:14:41,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:14:41,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:14:41,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:14:41,234 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:14:41,234 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:14:41,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:14:41,234 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:14:41,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:14:41,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:14:41,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:14:41,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:14:41,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:14:41,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:14:41,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:14:41,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:14:41,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:14:41,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:14:41,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:14:41,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:14:41,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:14:41,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:14:41,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:14:41,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:41,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:14:41,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:14:41,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:14:41,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:14:41,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:14:41,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:14:41,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:14:41,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:14:41,243 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_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2021-11-07 01:14:41,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:14:41,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:14:41,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:14:41,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:14:41,625 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:14:41,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-07 01:14:41,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/35f4f7eda/234d918e101b4027961dfd6ea779520b/FLAG22b1a1a51 [2021-11-07 01:14:42,241 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:14:42,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-07 01:14:42,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/35f4f7eda/234d918e101b4027961dfd6ea779520b/FLAG22b1a1a51 [2021-11-07 01:14:42,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/35f4f7eda/234d918e101b4027961dfd6ea779520b [2021-11-07 01:14:42,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:14:42,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:14:42,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:42,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:14:42,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:14:42,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:42" (1/1) ... [2021-11-07 01:14:42,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5028e07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:42, skipping insertion in model container [2021-11-07 01:14:42,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:42" (1/1) ... [2021-11-07 01:14:42,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:14:42,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:42,926 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_cc207e90-10f8-4918-84fb-99380a9de654/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-07 01:14:42,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:42,981 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) [2021-11-07 01:14:42,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c568090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:42, skipping insertion in model container [2021-11-07 01:14:42,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:42,982 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:14:42,985 INFO L168 Benchmark]: Toolchain (without parser) took 372.69 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 69.4 MB in the beginning and 105.9 MB in the end (delta: -36.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:14:42,986 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:14:42,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.26 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 69.1 MB in the beginning and 105.9 MB in the end (delta: -36.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:14:42,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.26 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 69.1 MB in the beginning and 105.9 MB in the end (delta: -36.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 34]: 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_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8 --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 d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:14:45,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:14:45,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:14:45,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:14:45,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:14:45,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:14:45,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:14:45,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:14:45,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:14:45,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:14:45,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:14:45,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:14:45,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:14:45,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:14:45,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:14:45,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:14:45,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:14:45,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:14:45,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:14:45,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:14:45,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:14:45,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:14:45,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:14:45,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:14:45,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:14:45,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:14:45,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:14:45,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:14:45,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:14:45,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:14:45,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:14:45,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:14:45,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:14:45,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:14:45,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:14:45,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:14:45,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:14:45,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:14:45,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:14:45,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:14:45,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:14:45,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:14:45,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:14:45,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:14:45,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:14:45,590 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:14:45,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:14:45,590 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:14:45,590 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:14:45,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:14:45,591 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:14:45,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:14:45,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:14:45,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:14:45,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:14:45,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:14:45,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:14:45,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:14:45,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:14:45,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:14:45,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:14:45,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:14:45,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:14:45,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:14:45,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:14:45,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:14:45,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:14:45,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:14:45,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:45,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:14:45,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:14:45,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:14:45,600 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:14:45,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:45,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:14:45,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:14:45,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:14:45,601 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_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2021-11-07 01:14:46,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:14:46,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:14:46,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:14:46,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:14:46,062 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:14:46,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-07 01:14:46,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/aad1bdfb5/f046ff4f92ed4c38add8610f43375854/FLAGf40e7c9c4 [2021-11-07 01:14:46,749 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:14:46,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-07 01:14:46,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/aad1bdfb5/f046ff4f92ed4c38add8610f43375854/FLAGf40e7c9c4 [2021-11-07 01:14:47,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/data/aad1bdfb5/f046ff4f92ed4c38add8610f43375854 [2021-11-07 01:14:47,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:14:47,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:14:47,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:47,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:14:47,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:14:47,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4364de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47, skipping insertion in model container [2021-11-07 01:14:47,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:14:47,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:47,300 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_cc207e90-10f8-4918-84fb-99380a9de654/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-07 01:14:47,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:47,359 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:14:47,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:47,392 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_cc207e90-10f8-4918-84fb-99380a9de654/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-07 01:14:47,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:47,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:14:47,458 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_cc207e90-10f8-4918-84fb-99380a9de654/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-07 01:14:47,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:47,485 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:14:47,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47 WrapperNode [2021-11-07 01:14:47,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:47,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:14:47,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:14:47,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:14:47,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:14:47,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:14:47,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:14:47,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:14:47,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:14:47,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:14:47,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:14:47,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:14:47,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:47,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:47,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:14:47,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:14:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:14:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:14:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:14:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:14:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:14:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:14:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:14:47,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:14:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:14:47,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:14:47,975 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 01:14:47,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:47 BoogieIcfgContainer [2021-11-07 01:14:47,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:14:47,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:14:47,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:14:47,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:14:47,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:14:47" (1/3) ... [2021-11-07 01:14:47,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3d7f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:47, skipping insertion in model container [2021-11-07 01:14:47,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47" (2/3) ... [2021-11-07 01:14:47,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3d7f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:14:47, skipping insertion in model container [2021-11-07 01:14:47,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:14:47" (3/3) ... [2021-11-07 01:14:47,986 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_cond_init.i [2021-11-07 01:14:47,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:14:47,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:14:48,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:14:48,072 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 [2021-11-07 01:14:48,073 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:14:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:14:48,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:48,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:48,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 650130346, now seen corresponding path program 1 times [2021-11-07 01:14:48,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:48,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307129655] [2021-11-07 01:14:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:48,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:48,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:48,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:14:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:48,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:14:48,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:48,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:48,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:48,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307129655] [2021-11-07 01:14:48,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307129655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:48,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:48,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:14:48,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855918774] [2021-11-07 01:14:48,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:14:48,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:14:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:14:48,425 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:48,440 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-07 01:14:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:14:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:14:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:48,450 INFO L225 Difference]: With dead ends: 31 [2021-11-07 01:14:48,450 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 01:14:48,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:14:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 01:14:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 01:14:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-11-07 01:14:48,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2021-11-07 01:14:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:48,487 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-07 01:14:48,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-07 01:14:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:14:48,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:48,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:48,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:48,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:48,702 INFO L85 PathProgramCache]: Analyzing trace with hash 220693081, now seen corresponding path program 1 times [2021-11-07 01:14:48,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:48,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884974121] [2021-11-07 01:14:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:48,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:48,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:48,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:14:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:48,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:48,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:48,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:48,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:48,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884974121] [2021-11-07 01:14:48,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884974121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:48,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:48,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:48,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478919717] [2021-11-07 01:14:48,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:48,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:48,922 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:49,016 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-11-07 01:14:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:14:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:49,018 INFO L225 Difference]: With dead ends: 37 [2021-11-07 01:14:49,019 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 01:14:49,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 01:14:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-11-07 01:14:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-07 01:14:49,026 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2021-11-07 01:14:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:49,026 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-07 01:14:49,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-07 01:14:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:14:49,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:49,028 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:49,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:49,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:49,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash 43755833, now seen corresponding path program 1 times [2021-11-07 01:14:49,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:49,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911904984] [2021-11-07 01:14:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:49,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:49,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:49,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:14:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:49,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:49,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:49,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:49,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:49,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911904984] [2021-11-07 01:14:49,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911904984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:49,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1178120007] [2021-11-07 01:14:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:49,582 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:49,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:49,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:14:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:49,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:49,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:49,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1178120007] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:49,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976961764] [2021-11-07 01:14:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:49,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:49,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:49,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:49,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:14:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:50,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:50,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:50,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976961764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:50,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:50,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-07 01:14:50,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026243927] [2021-11-07 01:14:50,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:50,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:50,224 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:50,508 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2021-11-07 01:14:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:14:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-07 01:14:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:50,512 INFO L225 Difference]: With dead ends: 85 [2021-11-07 01:14:50,512 INFO L226 Difference]: Without dead ends: 77 [2021-11-07 01:14:50,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-07 01:14:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2021-11-07 01:14:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-11-07 01:14:50,530 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 18 [2021-11-07 01:14:50,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:50,531 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-11-07 01:14:50,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:50,531 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-11-07 01:14:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:14:50,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:50,536 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:50,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:50,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:50,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:51,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:51,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1601220345, now seen corresponding path program 2 times [2021-11-07 01:14:51,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:51,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327136970] [2021-11-07 01:14:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:51,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:51,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:51,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:14:51,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:51,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:51,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:51,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:51,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327136970] [2021-11-07 01:14:51,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327136970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:51,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [910537907] [2021-11-07 01:14:51,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:51,946 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:51,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:51,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:14:52,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:52,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:52,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:52,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:52,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:52,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [910537907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:52,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803411756] [2021-11-07 01:14:52,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:52,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:52,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:52,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:14:52,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:52,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:52,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:52,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:53,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803411756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:53,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:53,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-11-07 01:14:53,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663891432] [2021-11-07 01:14:53,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:14:53,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:14:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:14:53,111 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:54,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:54,090 INFO L93 Difference]: Finished difference Result 181 states and 219 transitions. [2021-11-07 01:14:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:14:54,092 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:14:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:54,095 INFO L225 Difference]: With dead ends: 181 [2021-11-07 01:14:54,095 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 01:14:54,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:14:54,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 01:14:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 81. [2021-11-07 01:14:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-11-07 01:14:54,113 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 38 [2021-11-07 01:14:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:54,114 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-11-07 01:14:54,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-11-07 01:14:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:14:54,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:54,118 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:54,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:54,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:54,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 01:14:54,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:54,722 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:14:54,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:54,722 INFO L85 PathProgramCache]: Analyzing trace with hash 739613305, now seen corresponding path program 3 times [2021-11-07 01:14:54,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:54,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738276258] [2021-11-07 01:14:54,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:14:54,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:54,726 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:14:59,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-07 01:14:59,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:59,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:14:59,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:00,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:01,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:01,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738276258] [2021-11-07 01:15:01,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738276258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:01,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1265004628] [2021-11-07 01:15:01,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:15:01,443 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:01,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:01,444 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:01,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:15:01,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:01,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544962821] [2021-11-07 01:15:01,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:15:01,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:01,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:01,761 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:01,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-11-07 01:15:01,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc207e90-10f8-4918-84fb-99380a9de654/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process