./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.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_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/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_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/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_1e29195a-82cf-4f8f-953d-400d58efb35a/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 c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:42:28,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:42:28,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:42:28,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:42:28,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:42:28,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:42:28,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:42:28,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:42:28,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:42:28,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:42:28,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:42:28,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:42:28,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:42:28,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:42:28,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:42:28,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:42:28,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:42:28,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:42:28,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:42:28,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:42:28,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:42:28,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:42:28,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:42:28,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:42:28,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:42:28,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:42:28,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:42:28,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:42:28,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:42:28,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:42:28,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:42:28,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:42:28,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:42:28,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:42:28,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:42:28,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:42:28,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:42:28,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:42:28,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:42:28,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:42:28,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:42:28,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:42:28,356 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:42:28,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:42:28,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:42:28,358 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:42:28,359 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:42:28,359 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:42:28,359 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:42:28,359 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:42:28,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:42:28,360 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:42:28,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:42:28,361 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:42:28,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:42:28,362 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:42:28,362 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:42:28,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:42:28,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:42:28,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:42:28,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:42:28,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:42:28,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:42:28,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:42:28,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:42:28,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:42:28,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:42:28,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:42:28,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:42:28,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:42:28,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:42:28,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:42:28,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:42:28,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:42:28,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:42:28,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:42:28,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:42:28,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:42:28,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:42:28,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:42:28,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:42:28,370 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_1e29195a-82cf-4f8f-953d-400d58efb35a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2021-11-07 01:42:28,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:42:28,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:42:28,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:42:28,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:42:28,752 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:42:28,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-07 01:42:28,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/122358234/d0f1c4c124e942d5b309e00a558ee026/FLAG9da4ac7db [2021-11-07 01:42:29,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:42:29,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-07 01:42:29,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/122358234/d0f1c4c124e942d5b309e00a558ee026/FLAG9da4ac7db [2021-11-07 01:42:29,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/122358234/d0f1c4c124e942d5b309e00a558ee026 [2021-11-07 01:42:29,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:42:29,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:42:29,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:42:29,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:42:29,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:42:29,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:29" (1/1) ... [2021-11-07 01:42:29,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcc1a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:29, skipping insertion in model container [2021-11-07 01:42:29,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:29" (1/1) ... [2021-11-07 01:42:29,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:42:29,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:42:30,611 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_1e29195a-82cf-4f8f-953d-400d58efb35a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-07 01:42:30,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:42:31,013 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 01:42:31,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56c0aeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:31, skipping insertion in model container [2021-11-07 01:42:31,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:42:31,014 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:42:31,017 INFO L168 Benchmark]: Toolchain (without parser) took 1152.01 ms. Allocated memory is still 90.2 MB. Free memory was 54.5 MB in the beginning and 48.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:31,018 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:42:31,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1147.03 ms. Allocated memory is still 90.2 MB. Free memory was 54.3 MB in the beginning and 48.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:31,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1147.03 ms. Allocated memory is still 90.2 MB. Free memory was 54.3 MB in the beginning and 48.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/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_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/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_1e29195a-82cf-4f8f-953d-400d58efb35a/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 c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:42:33,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:42:33,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:42:33,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:42:33,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:42:33,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:42:33,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:42:33,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:42:33,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:42:33,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:42:33,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:42:33,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:42:33,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:42:33,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:42:33,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:42:33,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:42:33,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:42:33,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:42:33,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:42:33,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:42:33,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:42:33,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:42:33,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:42:33,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:42:33,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:42:33,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:42:33,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:42:33,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:42:33,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:42:33,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:42:33,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:42:33,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:42:33,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:42:33,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:42:33,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:42:33,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:42:33,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:42:33,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:42:33,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:42:33,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:42:33,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:42:33,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:42:33,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:42:33,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:42:33,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:42:33,807 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:42:33,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:42:33,807 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:42:33,808 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:42:33,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:42:33,808 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:42:33,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:42:33,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:42:33,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:42:33,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:42:33,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:42:33,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:42:33,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:42:33,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:42:33,811 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:42:33,811 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:42:33,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:42:33,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:42:33,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:42:33,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:42:33,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:42:33,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:42:33,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:42:33,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:42:33,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:42:33,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:42:33,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:42:33,814 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:42:33,815 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:33,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:42:33,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:42:33,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:42:33,816 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_1e29195a-82cf-4f8f-953d-400d58efb35a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2021-11-07 01:42:34,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:42:34,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:42:34,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:42:34,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:42:34,306 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:42:34,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-07 01:42:34,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/fe5c45fb0/c9ccee75d0284b7592cd6b1d3bcd59a6/FLAGdad265dee [2021-11-07 01:42:35,215 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:42:35,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-07 01:42:35,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/fe5c45fb0/c9ccee75d0284b7592cd6b1d3bcd59a6/FLAGdad265dee [2021-11-07 01:42:35,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/data/fe5c45fb0/c9ccee75d0284b7592cd6b1d3bcd59a6 [2021-11-07 01:42:35,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:42:35,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:42:35,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:42:35,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:42:35,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:42:35,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:35" (1/1) ... [2021-11-07 01:42:35,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0a442b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:35, skipping insertion in model container [2021-11-07 01:42:35,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:35" (1/1) ... [2021-11-07 01:42:35,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:42:35,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:42:36,047 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_1e29195a-82cf-4f8f-953d-400d58efb35a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-07 01:42:36,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:42:36,438 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:42:36,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:42:36,483 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_1e29195a-82cf-4f8f-953d-400d58efb35a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-07 01:42:36,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:42:36,701 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:42:36,729 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_1e29195a-82cf-4f8f-953d-400d58efb35a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-07 01:42:36,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:42:36,936 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:42:36,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36 WrapperNode [2021-11-07 01:42:36,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:42:36,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:42:36,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:42:36,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:42:36,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:42:37,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:42:37,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:42:37,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:42:37,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:42:37,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:42:37,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:42:37,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:42:37,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (1/1) ... [2021-11-07 01:42:37,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:42:37,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:42:37,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:42:37,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:42:37,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:42:37,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:42:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:42:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:42:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:42:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:42:37,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:42:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:42:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:42:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:42:37,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:42:37,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:42:52,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:42:52,833 INFO L299 CfgBuilder]: Removed 224 assume(true) statements. [2021-11-07 01:42:52,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:52 BoogieIcfgContainer [2021-11-07 01:42:52,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:42:52,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:42:52,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:42:52,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:42:52,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:42:35" (1/3) ... [2021-11-07 01:42:52,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c16b1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:52, skipping insertion in model container [2021-11-07 01:42:52,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:36" (2/3) ... [2021-11-07 01:42:52,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c16b1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:52, skipping insertion in model container [2021-11-07 01:42:52,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:52" (3/3) ... [2021-11-07 01:42:52,855 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-3.i [2021-11-07 01:42:52,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:42:52,862 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 01:42:52,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:42:52,964 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 01:42:52,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 01:42:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 0 states have call successors, (0), 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 01:42:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:42:53,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:53,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:53,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:42:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-07 01:42:53,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:53,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029074915] [2021-11-07 01:42:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:53,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:53,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:53,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:53,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:42:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:53,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:42:53,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:53,509 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 01:42:53,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:53,566 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 01:42:53,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:53,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029074915] [2021-11-07 01:42:53,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029074915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:53,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:53,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:42:53,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786160415] [2021-11-07 01:42:53,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:42:53,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:42:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:42:53,620 INFO L87 Difference]: Start difference. First operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:53,766 INFO L93 Difference]: Finished difference Result 1038 states and 1752 transitions. [2021-11-07 01:42:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:42:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:42:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:53,791 INFO L225 Difference]: With dead ends: 1038 [2021-11-07 01:42:53,793 INFO L226 Difference]: Without dead ends: 465 [2021-11-07 01:42:53,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:42:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-07 01:42:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-07 01:42:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 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 01:42:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-07 01:42:53,894 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-07 01:42:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:53,894 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-07 01:42:53,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-07 01:42:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:42:53,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:53,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:53,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:42:54,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:54,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:42:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:54,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-07 01:42:54,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:54,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458913864] [2021-11-07 01:42:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:54,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:54,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:54,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:42:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:54,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:42:54,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:54,659 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 01:42:54,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:54,834 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 01:42:54,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:54,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458913864] [2021-11-07 01:42:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458913864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:54,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:54,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:42:54,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044330255] [2021-11-07 01:42:54,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:42:54,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:42:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:42:54,839 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:55,049 INFO L93 Difference]: Finished difference Result 756 states and 989 transitions. [2021-11-07 01:42:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:42:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:42:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:55,059 INFO L225 Difference]: With dead ends: 756 [2021-11-07 01:42:55,059 INFO L226 Difference]: Without dead ends: 469 [2021-11-07 01:42:55,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:42:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-07 01:42:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 468. [2021-11-07 01:42:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 452 states have (on average 1.334070796460177) internal successors, (603), 467 states have internal predecessors, (603), 0 states have call successors, (0), 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 01:42:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 603 transitions. [2021-11-07 01:42:55,092 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 603 transitions. Word has length 44 [2021-11-07 01:42:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:55,092 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 603 transitions. [2021-11-07 01:42:55,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 603 transitions. [2021-11-07 01:42:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:42:55,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:55,096 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:55,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:55,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:55,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:42:55,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:55,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1615141200, now seen corresponding path program 1 times [2021-11-07 01:42:55,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:55,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579951385] [2021-11-07 01:42:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:55,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:55,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:55,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:55,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:42:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:55,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:42:55,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:56,008 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 01:42:56,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:56,411 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 01:42:56,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:56,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579951385] [2021-11-07 01:42:56,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579951385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:56,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:56,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:42:56,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444864229] [2021-11-07 01:42:56,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:42:56,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:42:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:42:56,416 INFO L87 Difference]: Start difference. First operand 468 states and 603 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:42:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:56,597 INFO L93 Difference]: Finished difference Result 729 states and 939 transitions. [2021-11-07 01:42:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:42:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:42:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:56,601 INFO L225 Difference]: With dead ends: 729 [2021-11-07 01:42:56,601 INFO L226 Difference]: Without dead ends: 462 [2021-11-07 01:42:56,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:42:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-07 01:42:56,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-11-07 01:42:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 446 states have (on average 1.3295964125560538) internal successors, (593), 461 states have internal predecessors, (593), 0 states have call successors, (0), 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 01:42:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 593 transitions. [2021-11-07 01:42:56,619 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 593 transitions. Word has length 44 [2021-11-07 01:42:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 593 transitions. [2021-11-07 01:42:56,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:42:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 593 transitions. [2021-11-07 01:42:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:42:56,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:56,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:56,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:56,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:56,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:42:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1883778186, now seen corresponding path program 1 times [2021-11-07 01:42:56,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:56,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422713674] [2021-11-07 01:42:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:56,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:56,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:56,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:56,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:42:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:57,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:42:57,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:57,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:57,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:57,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:42:57,495 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:42:57,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:42:57,631 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:42:57,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:42:57,781 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 01:42:57,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:58,008 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 01:42:58,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:58,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422713674] [2021-11-07 01:42:58,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422713674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:58,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:58,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:42:58,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067535852] [2021-11-07 01:42:58,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:42:58,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:42:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:42:58,011 INFO L87 Difference]: Start difference. First operand 462 states and 593 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:12,770 INFO L93 Difference]: Finished difference Result 825 states and 1057 transitions. [2021-11-07 01:43:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:43:12,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:43:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:12,776 INFO L225 Difference]: With dead ends: 825 [2021-11-07 01:43:12,776 INFO L226 Difference]: Without dead ends: 537 [2021-11-07 01:43:12,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:43:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-07 01:43:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 464. [2021-11-07 01:43:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 448 states have (on average 1.328125) internal successors, (595), 463 states have internal predecessors, (595), 0 states have call successors, (0), 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 01:43:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 595 transitions. [2021-11-07 01:43:12,796 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 595 transitions. Word has length 44 [2021-11-07 01:43:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:12,796 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 595 transitions. [2021-11-07 01:43:12,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 595 transitions. [2021-11-07 01:43:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:43:12,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:12,800 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:12,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:13,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:13,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1640597416, now seen corresponding path program 1 times [2021-11-07 01:43:13,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:13,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790992679] [2021-11-07 01:43:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:13,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:13,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:13,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:43:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:13,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:43:13,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:13,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:14,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:14,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790992679] [2021-11-07 01:43:14,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790992679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:43:14,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:43:14,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:43:14,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223711149] [2021-11-07 01:43:14,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:43:14,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:43:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:43:14,188 INFO L87 Difference]: Start difference. First operand 464 states and 595 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 01:43:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:14,348 INFO L93 Difference]: Finished difference Result 1017 states and 1310 transitions. [2021-11-07 01:43:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:43:14,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 97 [2021-11-07 01:43:14,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:14,353 INFO L225 Difference]: With dead ends: 1017 [2021-11-07 01:43:14,353 INFO L226 Difference]: Without dead ends: 557 [2021-11-07 01:43:14,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:43:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-07 01:43:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 467. [2021-11-07 01:43:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 466 states have internal predecessors, (590), 0 states have call successors, (0), 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 01:43:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 590 transitions. [2021-11-07 01:43:14,374 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 590 transitions. Word has length 97 [2021-11-07 01:43:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:14,377 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 590 transitions. [2021-11-07 01:43:14,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 01:43:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 590 transitions. [2021-11-07 01:43:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:43:14,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:14,380 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:14,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:14,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:14,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:14,609 INFO L85 PathProgramCache]: Analyzing trace with hash -35071002, now seen corresponding path program 1 times [2021-11-07 01:43:14,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:14,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626324898] [2021-11-07 01:43:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:14,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:14,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:14,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:14,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:43:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:15,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:43:15,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:15,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:16,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:16,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626324898] [2021-11-07 01:43:16,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626324898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:43:16,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:43:16,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-07 01:43:16,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133801848] [2021-11-07 01:43:16,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:43:16,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:43:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:43:16,064 INFO L87 Difference]: Start difference. First operand 467 states and 590 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 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 01:43:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:16,221 INFO L93 Difference]: Finished difference Result 1013 states and 1287 transitions. [2021-11-07 01:43:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:43:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 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 97 [2021-11-07 01:43:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:16,227 INFO L225 Difference]: With dead ends: 1013 [2021-11-07 01:43:16,228 INFO L226 Difference]: Without dead ends: 550 [2021-11-07 01:43:16,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:43:16,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-07 01:43:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 461. [2021-11-07 01:43:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 445 states have (on average 1.303370786516854) internal successors, (580), 460 states have internal predecessors, (580), 0 states have call successors, (0), 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 01:43:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 580 transitions. [2021-11-07 01:43:16,246 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 580 transitions. Word has length 97 [2021-11-07 01:43:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:16,246 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 580 transitions. [2021-11-07 01:43:16,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 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 01:43:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 580 transitions. [2021-11-07 01:43:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:43:16,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:16,248 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:16,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:16,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:16,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-07 01:43:16,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:16,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992883162] [2021-11-07 01:43:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:16,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:16,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:16,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:16,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:43:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:17,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:43:17,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:17,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:18,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:18,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992883162] [2021-11-07 01:43:18,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992883162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:43:18,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:43:18,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:43:18,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126330388] [2021-11-07 01:43:18,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:43:18,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:43:18,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:43:18,265 INFO L87 Difference]: Start difference. First operand 461 states and 580 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 01:43:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:19,079 INFO L93 Difference]: Finished difference Result 1186 states and 1492 transitions. [2021-11-07 01:43:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:43:19,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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) Word has length 97 [2021-11-07 01:43:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:19,086 INFO L225 Difference]: With dead ends: 1186 [2021-11-07 01:43:19,086 INFO L226 Difference]: Without dead ends: 729 [2021-11-07 01:43:19,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:43:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-07 01:43:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 694. [2021-11-07 01:43:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 678 states have (on average 1.3097345132743363) internal successors, (888), 693 states have internal predecessors, (888), 0 states have call successors, (0), 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 01:43:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 888 transitions. [2021-11-07 01:43:19,118 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 888 transitions. Word has length 97 [2021-11-07 01:43:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 888 transitions. [2021-11-07 01:43:19,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 01:43:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 888 transitions. [2021-11-07 01:43:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 01:43:19,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:19,121 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:19,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:19,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:19,337 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-07 01:43:19,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:19,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088388961] [2021-11-07 01:43:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:19,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:19,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:19,339 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:19,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:43:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:20,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:43:20,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:20,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:43:20,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:20,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088388961] [2021-11-07 01:43:20,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088388961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:43:20,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:43:20,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:43:20,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497031227] [2021-11-07 01:43:20,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:43:20,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:43:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:43:20,594 INFO L87 Difference]: Start difference. First operand 694 states and 888 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 01:43:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:20,733 INFO L93 Difference]: Finished difference Result 1349 states and 1731 transitions. [2021-11-07 01:43:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:43:20,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 104 [2021-11-07 01:43:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:20,739 INFO L225 Difference]: With dead ends: 1349 [2021-11-07 01:43:20,739 INFO L226 Difference]: Without dead ends: 703 [2021-11-07 01:43:20,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 01:43:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-07 01:43:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2021-11-07 01:43:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 687 states have (on average 1.3056768558951966) internal successors, (897), 702 states have internal predecessors, (897), 0 states have call successors, (0), 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 01:43:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 897 transitions. [2021-11-07 01:43:20,773 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 897 transitions. Word has length 104 [2021-11-07 01:43:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:20,773 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 897 transitions. [2021-11-07 01:43:20,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 01:43:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 897 transitions. [2021-11-07 01:43:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:43:20,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:20,775 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:20,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:20,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:20,994 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash 421191101, now seen corresponding path program 1 times [2021-11-07 01:43:20,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:20,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886610542] [2021-11-07 01:43:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:20,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:20,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:20,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:21,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:43:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:21,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:43:21,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:43:22,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:43:22,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:22,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886610542] [2021-11-07 01:43:22,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886610542] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:22,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [290598318] [2021-11-07 01:43:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:22,531 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:43:22,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:43:22,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:43:22,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:43:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:23,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:43:23,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:43:23,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:43:24,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [290598318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:24,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064190594] [2021-11-07 01:43:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:43:24,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:43:24,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:43:24,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:43:24,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:43:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:43:24,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:43:24,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:43:25,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:43:25,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064190594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:25,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:43:25,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:43:25,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860212304] [2021-11-07 01:43:25,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:43:25,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:43:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:43:25,368 INFO L87 Difference]: Start difference. First operand 703 states and 897 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 01:43:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:26,003 INFO L93 Difference]: Finished difference Result 1380 states and 1777 transitions. [2021-11-07 01:43:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:43:26,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 107 [2021-11-07 01:43:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:26,010 INFO L225 Difference]: With dead ends: 1380 [2021-11-07 01:43:26,010 INFO L226 Difference]: Without dead ends: 727 [2021-11-07 01:43:26,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:43:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-07 01:43:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-07 01:43:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.2953586497890295) internal successors, (921), 726 states have internal predecessors, (921), 0 states have call successors, (0), 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 01:43:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 921 transitions. [2021-11-07 01:43:26,042 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 921 transitions. Word has length 107 [2021-11-07 01:43:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:26,043 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 921 transitions. [2021-11-07 01:43:26,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 01:43:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 921 transitions. [2021-11-07 01:43:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 01:43:26,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:26,046 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:26,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:26,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:26,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:26,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:26,661 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash -872018179, now seen corresponding path program 2 times [2021-11-07 01:43:26,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:26,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373170979] [2021-11-07 01:43:26,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:43:26,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:26,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:26,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:43:27,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:43:27,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:27,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:43:27,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:28,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:28,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:43:28,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373170979] [2021-11-07 01:43:28,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373170979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:28,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1850494607] [2021-11-07 01:43:28,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:43:28,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:43:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:43:28,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:43:28,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:43:29,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:43:29,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:29,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:43:29,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:30,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:43:30,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1850494607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:30,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684441590] [2021-11-07 01:43:30,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:43:30,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:43:30,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:43:30,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:43:30,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 01:43:31,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:43:31,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:31,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:43:31,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:43:31,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:43:32,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684441590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:32,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:43:32,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:43:32,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231572405] [2021-11-07 01:43:32,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:43:32,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:43:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:43:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:43:32,838 INFO L87 Difference]: Start difference. First operand 727 states and 921 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:43:42,151 INFO L93 Difference]: Finished difference Result 2128 states and 2738 transitions. [2021-11-07 01:43:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:43:42,154 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 01:43:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:43:42,164 INFO L225 Difference]: With dead ends: 2128 [2021-11-07 01:43:42,164 INFO L226 Difference]: Without dead ends: 1455 [2021-11-07 01:43:42,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:43:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-07 01:43:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 793. [2021-11-07 01:43:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.274131274131274) internal successors, (990), 792 states have internal predecessors, (990), 0 states have call successors, (0), 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 01:43:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 990 transitions. [2021-11-07 01:43:42,222 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 990 transitions. Word has length 115 [2021-11-07 01:43:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:43:42,222 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 990 transitions. [2021-11-07 01:43:42,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:43:42,223 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 990 transitions. [2021-11-07 01:43:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 01:43:42,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:43:42,226 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:43:42,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:42,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:42,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:42,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:42,839 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:43:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:43:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash -837922435, now seen corresponding path program 3 times [2021-11-07 01:43:42,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:43:42,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643757246] [2021-11-07 01:43:42,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:43:42,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:43:42,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:43:42,842 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:43:42,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e29195a-82cf-4f8f-953d-400d58efb35a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:43:44,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:43:44,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:45,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:43:45,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:45,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:43:45,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:43:45,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:43:45,106 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:43:45,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:43:45,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:43:45,315 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:43:45,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15