./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF --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 fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:14:12,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:14:12,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:14:12,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:14:12,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:14:12,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:14:12,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:14:12,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:14:12,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:14:12,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:14:12,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:14:12,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:14:12,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:14:12,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:14:12,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:14:12,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:14:12,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:14:12,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:14:12,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:14:12,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:14:12,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:14:12,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:14:12,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:14:12,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:14:12,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:14:12,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:14:12,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:14:12,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:14:12,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:14:12,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:14:12,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:14:12,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:14:12,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:14:12,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:14:12,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:14:12,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:14:12,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:14:12,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:14:12,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:14:12,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:14:12,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:14:12,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:14:12,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:14:12,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:14:12,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:14:12,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:14:12,270 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:14:12,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:14:12,275 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:14:12,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:14:12,276 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:14:12,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:14:12,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:14:12,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:14:12,278 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:14:12,278 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:14:12,278 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:14:12,279 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:14:12,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:14:12,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:14:12,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:14:12,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:14:12,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:14:12,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:14:12,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:14:12,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:14:12,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:14:12,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:14:12,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:14:12,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:14:12,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:14:12,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:14:12,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:14:12,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:12,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:14:12,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:14:12,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:14:12,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:14:12,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:14:12,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:14:12,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:14:12,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:14:12,291 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2021-11-12 23:14:12,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:14:12,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:14:12,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:14:12,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:14:12,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:14:12,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-12 23:14:12,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/a542ebf98/738b46b4416a46a1bd07d7d960f92134/FLAG1d839871a [2021-11-12 23:14:13,349 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:14:13,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-12 23:14:13,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/a542ebf98/738b46b4416a46a1bd07d7d960f92134/FLAG1d839871a [2021-11-12 23:14:13,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/a542ebf98/738b46b4416a46a1bd07d7d960f92134 [2021-11-12 23:14:13,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:14:13,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:14:13,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:13,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:14:13,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:14:13,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:13" (1/1) ... [2021-11-12 23:14:13,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254579b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:13, skipping insertion in model container [2021-11-12 23:14:13,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:13" (1/1) ... [2021-11-12 23:14:13,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:14:13,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:14,124 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-12 23:14:14,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:14,167 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) [2021-11-12 23:14:14,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ecb72c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:14, skipping insertion in model container [2021-11-12 23:14:14,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:14,168 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:14:14,171 INFO L158 Benchmark]: Toolchain (without parser) took 589.13ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 64.7MB in the end (delta: -3.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,172 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:14:14,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.05ms. Allocated memory is still 100.7MB. Free memory was 60.5MB in the beginning and 64.7MB in the end (delta: -4.1MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-11-12 23:14:14,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.05ms. Allocated memory is still 100.7MB. Free memory was 60.5MB in the beginning and 64.7MB in the end (delta: -4.1MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF --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 fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:14:16,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:14:16,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:14:16,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:14:16,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:14:16,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:14:16,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:14:16,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:14:16,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:14:16,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:14:16,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:14:16,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:14:16,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:14:16,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:14:16,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:14:16,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:14:16,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:14:16,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:14:16,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:14:16,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:14:16,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:14:16,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:14:16,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:14:16,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:14:16,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:14:16,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:14:16,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:14:16,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:14:16,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:14:16,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:14:16,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:14:16,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:14:16,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:14:16,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:14:16,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:14:16,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:14:16,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:14:16,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:14:16,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:14:16,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:14:16,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:14:16,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:14:16,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:14:16,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:14:16,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:14:16,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:14:16,700 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:14:16,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:14:16,701 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:14:16,701 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:14:16,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:14:16,701 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:14:16,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:14:16,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:14:16,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:14:16,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:14:16,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:14:16,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:14:16,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:14:16,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:14:16,706 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:14:16,706 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:14:16,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:14:16,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:14:16,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:14:16,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:14:16,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:14:16,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:14:16,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:14:16,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:16,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:14:16,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:14:16,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:14:16,709 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:14:16,709 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:14:16,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:14:16,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:14:16,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:14:16,710 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2021-11-12 23:14:17,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:14:17,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:14:17,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:14:17,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:14:17,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:14:17,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-12 23:14:17,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/955e276dc/19db9b8e4ef0480c9bcb45482b7f8046/FLAG746dcf256 [2021-11-12 23:14:18,012 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:14:18,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-12 23:14:18,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/955e276dc/19db9b8e4ef0480c9bcb45482b7f8046/FLAG746dcf256 [2021-11-12 23:14:18,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/data/955e276dc/19db9b8e4ef0480c9bcb45482b7f8046 [2021-11-12 23:14:18,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:14:18,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:14:18,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:18,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:14:18,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:14:18,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:18" (1/1) ... [2021-11-12 23:14:18,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4dab8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:18, skipping insertion in model container [2021-11-12 23:14:18,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:18" (1/1) ... [2021-11-12 23:14:18,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:14:18,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:18,686 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-12 23:14:18,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:18,717 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:14:18,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:18,822 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-12 23:14:18,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:18,845 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:14:18,995 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_8b8b2e64-a650-4ece-915b-d1899c5e25c4/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-12 23:14:19,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:19,025 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:14:19,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19 WrapperNode [2021-11-12 23:14:19,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:19,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:14:19,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:14:19,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:14:19,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:14:19,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:14:19,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:14:19,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:14:19,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:14:19,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:14:19,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:14:19,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:14:19,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (1/1) ... [2021-11-12 23:14:19,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:14:19,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:14:19,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:14:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:14:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:14:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:14:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:14:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:14:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:14:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:14:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:14:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:14:19,603 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:14:28,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-12 23:14:28,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-12 23:14:28,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:14:28,472 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:14:28,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:14:28 BoogieIcfgContainer [2021-11-12 23:14:28,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:14:28,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:14:28,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:14:28,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:14:28,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:14:18" (1/3) ... [2021-11-12 23:14:28,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3991776b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:14:28, skipping insertion in model container [2021-11-12 23:14:28,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:19" (2/3) ... [2021-11-12 23:14:28,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3991776b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:14:28, skipping insertion in model container [2021-11-12 23:14:28,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:14:28" (3/3) ... [2021-11-12 23:14:28,482 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2021-11-12 23:14:28,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:14:28,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:14:28,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:14:28,552 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 [2021-11-12 23:14:28,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:14:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 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) [2021-11-12 23:14:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-12 23:14:28,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:28,595 INFO L514 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, 1] [2021-11-12 23:14:28,596 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:28,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:28,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1630857964, now seen corresponding path program 1 times [2021-11-12 23:14:28,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:28,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203307085] [2021-11-12 23:14:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:28,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:28,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:28,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:28,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:14:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:28,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:28,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:29,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:29,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:29,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203307085] [2021-11-12 23:14:29,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203307085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:29,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:29,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:14:29,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158654553] [2021-11-12 23:14:29,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:29,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:29,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:29,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:29,521 INFO L87 Difference]: Start difference. First operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-12 23:14:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:29,783 INFO L93 Difference]: Finished difference Result 566 states and 968 transitions. [2021-11-12 23:14:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 45 [2021-11-12 23:14:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:29,810 INFO L225 Difference]: With dead ends: 566 [2021-11-12 23:14:29,810 INFO L226 Difference]: Without dead ends: 386 [2021-11-12 23:14:29,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:29,820 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 386 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.17ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:29,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 667 Invalid, 85 Unknown, 0 Unchecked, 16.17ms Time], IncrementalHoareTripleChecker [30 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 144.08ms Time] [2021-11-12 23:14:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-12 23:14:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-12 23:14:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.5298701298701298) internal successors, (589), 385 states have internal predecessors, (589), 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) [2021-11-12 23:14:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 589 transitions. [2021-11-12 23:14:29,929 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 589 transitions. Word has length 45 [2021-11-12 23:14:29,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:29,930 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 589 transitions. [2021-11-12 23:14:29,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-12 23:14:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 589 transitions. [2021-11-12 23:14:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:14:29,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:29,944 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-12 23:14:29,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:30,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:30,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1648174202, now seen corresponding path program 1 times [2021-11-12 23:14:30,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:30,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963098384] [2021-11-12 23:14:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:30,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:30,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:30,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:30,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:14:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:30,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:30,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:30,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:14:31,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:31,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963098384] [2021-11-12 23:14:31,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963098384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:31,234 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:31,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:14:31,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912128601] [2021-11-12 23:14:31,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:31,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:31,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:31,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:31,238 INFO L87 Difference]: Start difference. First operand 386 states and 589 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2021-11-12 23:14:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:32,080 INFO L93 Difference]: Finished difference Result 883 states and 1363 transitions. [2021-11-12 23:14:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:32,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 [2021-11-12 23:14:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:32,085 INFO L225 Difference]: With dead ends: 883 [2021-11-12 23:14:32,086 INFO L226 Difference]: Without dead ends: 632 [2021-11-12 23:14:32,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:32,089 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 295 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 760.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 793.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:32,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 721 Invalid, 89 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [27 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 793.86ms Time] [2021-11-12 23:14:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-12 23:14:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-11-12 23:14:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.5229793977812995) internal successors, (961), 631 states have internal predecessors, (961), 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) [2021-11-12 23:14:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 961 transitions. [2021-11-12 23:14:32,121 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 961 transitions. Word has length 107 [2021-11-12 23:14:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:32,122 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 961 transitions. [2021-11-12 23:14:32,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2021-11-12 23:14:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 961 transitions. [2021-11-12 23:14:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 23:14:32,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:32,126 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-12 23:14:32,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:32,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:32,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:32,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash -980856047, now seen corresponding path program 1 times [2021-11-12 23:14:32,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:32,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362173482] [2021-11-12 23:14:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:32,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:32,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:32,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:32,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:14:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:32,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:32,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:14:33,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:14:33,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:33,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362173482] [2021-11-12 23:14:33,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362173482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:33,750 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:33,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:14:33,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95553609] [2021-11-12 23:14:33,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:33,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:14:33,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:14:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:33,753 INFO L87 Difference]: Start difference. First operand 632 states and 961 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-12 23:14:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:34,187 INFO L93 Difference]: Finished difference Result 1251 states and 1912 transitions. [2021-11-12 23:14:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:14:34,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 172 [2021-11-12 23:14:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:34,193 INFO L225 Difference]: With dead ends: 1251 [2021-11-12 23:14:34,193 INFO L226 Difference]: Without dead ends: 754 [2021-11-12 23:14:34,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:34,196 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 380.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 400.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:34,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 573 Invalid, 37 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 400.18ms Time] [2021-11-12 23:14:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-12 23:14:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-11-12 23:14:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.5179282868525896) internal successors, (1143), 753 states have internal predecessors, (1143), 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) [2021-11-12 23:14:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1143 transitions. [2021-11-12 23:14:34,225 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1143 transitions. Word has length 172 [2021-11-12 23:14:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:34,225 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 1143 transitions. [2021-11-12 23:14:34,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-12 23:14:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1143 transitions. [2021-11-12 23:14:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-12 23:14:34,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:34,229 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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] [2021-11-12 23:14:34,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:34,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:34,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash -302907374, now seen corresponding path program 1 times [2021-11-12 23:14:34,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:34,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695566348] [2021-11-12 23:14:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:34,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:34,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:34,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:14:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:34,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:34,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 23:14:35,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 23:14:35,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:35,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695566348] [2021-11-12 23:14:35,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695566348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:35,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:35,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:14:35,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174724653] [2021-11-12 23:14:35,947 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:35,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:35,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:35,950 INFO L87 Difference]: Start difference. First operand 754 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-11-12 23:14:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:36,578 INFO L93 Difference]: Finished difference Result 1618 states and 2468 transitions. [2021-11-12 23:14:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 213 [2021-11-12 23:14:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:36,584 INFO L225 Difference]: With dead ends: 1618 [2021-11-12 23:14:36,584 INFO L226 Difference]: Without dead ends: 999 [2021-11-12 23:14:36,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:36,585 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 292 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 536.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 573.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:36,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 724 Invalid, 85 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 573.65ms Time] [2021-11-12 23:14:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-12 23:14:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 999. [2021-11-12 23:14:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.5160320641282565) internal successors, (1513), 998 states have internal predecessors, (1513), 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) [2021-11-12 23:14:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1513 transitions. [2021-11-12 23:14:36,623 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1513 transitions. Word has length 213 [2021-11-12 23:14:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:36,623 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1513 transitions. [2021-11-12 23:14:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-11-12 23:14:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1513 transitions. [2021-11-12 23:14:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-12 23:14:36,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:36,630 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-12 23:14:36,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:36,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:36,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1717022423, now seen corresponding path program 1 times [2021-11-12 23:14:36,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:36,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141791991] [2021-11-12 23:14:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:36,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:36,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:36,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:36,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:14:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:37,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:37,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-12 23:14:38,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-12 23:14:38,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:38,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141791991] [2021-11-12 23:14:38,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141791991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:38,710 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:38,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:14:38,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506676128] [2021-11-12 23:14:38,711 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:38,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:14:38,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:14:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:38,712 INFO L87 Difference]: Start difference. First operand 999 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-11-12 23:14:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:39,367 INFO L93 Difference]: Finished difference Result 1984 states and 3014 transitions. [2021-11-12 23:14:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:14:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 296 [2021-11-12 23:14:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:39,375 INFO L225 Difference]: With dead ends: 1984 [2021-11-12 23:14:39,375 INFO L226 Difference]: Without dead ends: 1120 [2021-11-12 23:14:39,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:14:39,378 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 592.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 610.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:39,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 571 Invalid, 37 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 610.94ms Time] [2021-11-12 23:14:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-12 23:14:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-11-12 23:14:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.51295799821269) internal successors, (1693), 1119 states have internal predecessors, (1693), 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) [2021-11-12 23:14:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1693 transitions. [2021-11-12 23:14:39,438 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1693 transitions. Word has length 296 [2021-11-12 23:14:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:39,439 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1693 transitions. [2021-11-12 23:14:39,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-11-12 23:14:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1693 transitions. [2021-11-12 23:14:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-12 23:14:39,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:39,447 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-12 23:14:39,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:39,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:39,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash 618226153, now seen corresponding path program 1 times [2021-11-12 23:14:39,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:39,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046256888] [2021-11-12 23:14:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:39,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:39,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:39,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:39,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:14:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:40,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:14:40,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-12 23:14:40,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-12 23:14:41,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:41,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046256888] [2021-11-12 23:14:41,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046256888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:41,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:41,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:14:41,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197965074] [2021-11-12 23:14:41,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:41,671 INFO L87 Difference]: Start difference. First operand 1120 states and 1693 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2021-11-12 23:14:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:42,162 INFO L93 Difference]: Finished difference Result 2350 states and 3567 transitions. [2021-11-12 23:14:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:42,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 335 [2021-11-12 23:14:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:42,171 INFO L225 Difference]: With dead ends: 2350 [2021-11-12 23:14:42,172 INFO L226 Difference]: Without dead ends: 1365 [2021-11-12 23:14:42,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:42,175 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 301 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 405.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 429.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:42,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 724 Invalid, 84 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [23 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 429.99ms Time] [2021-11-12 23:14:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-12 23:14:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2021-11-12 23:14:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.5109970674486803) internal successors, (2061), 1364 states have internal predecessors, (2061), 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) [2021-11-12 23:14:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2061 transitions. [2021-11-12 23:14:42,238 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2061 transitions. Word has length 335 [2021-11-12 23:14:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:42,239 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2061 transitions. [2021-11-12 23:14:42,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2021-11-12 23:14:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2061 transitions. [2021-11-12 23:14:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-12 23:14:42,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:42,250 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-11-12 23:14:42,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:42,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:42,465 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:42,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1430965337, now seen corresponding path program 1 times [2021-11-12 23:14:42,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:42,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898205957] [2021-11-12 23:14:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:42,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:42,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:42,468 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:42,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:14:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:43,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:14:43,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:43,929 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:14:43,939 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:14:44,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:44,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-12 23:14:44,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:44,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-12 23:14:44,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-12 23:14:44,556 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-12 23:14:44,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 1041 treesize of output 993 [2021-11-12 23:14:44,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:44,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-12 23:14:44,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:44,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-12 23:14:44,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-12 23:14:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-12 23:14:44,942 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-12 23:14:44,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-12 23:14:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:14:44,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-12 23:14:45,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:14:45,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-12 23:14:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-12 23:14:46,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:47,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-12 23:14:47,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-12 23:14:47,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-12 23:14:47,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-12 23:14:47,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-12 23:14:47,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-12 23:14:47,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-12 23:14:47,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:14:47,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-12 23:14:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-12 23:14:48,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:48,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898205957] [2021-11-12 23:14:48,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898205957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:48,058 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:48,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:14:48,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834929176] [2021-11-12 23:14:48,059 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:48,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:14:48,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:14:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:14:48,060 INFO L87 Difference]: Start difference. First operand 1365 states and 2061 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2021-11-12 23:14:50,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:52,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:54,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:07,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:09,710 INFO L93 Difference]: Finished difference Result 2727 states and 4118 transitions. [2021-11-12 23:15:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:15:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 421 [2021-11-12 23:15:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:09,720 INFO L225 Difference]: With dead ends: 2727 [2021-11-12 23:15:09,720 INFO L226 Difference]: Without dead ends: 1365 [2021-11-12 23:15:09,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:15:09,727 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 7 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21058.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 21518.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:09,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1150 Invalid, 335 Unknown, 0 Unchecked, 5.41ms Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 3 Unknown, 60 Unchecked, 21518.32ms Time] [2021-11-12 23:15:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-12 23:15:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2021-11-12 23:15:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.5102639296187683) internal successors, (2060), 1364 states have internal predecessors, (2060), 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) [2021-11-12 23:15:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2060 transitions. [2021-11-12 23:15:09,797 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2060 transitions. Word has length 421 [2021-11-12 23:15:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:09,798 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2060 transitions. [2021-11-12 23:15:09,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2021-11-12 23:15:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2060 transitions. [2021-11-12 23:15:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-12 23:15:09,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:09,809 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-11-12 23:15:09,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:10,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:10,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1367846103, now seen corresponding path program 1 times [2021-11-12 23:15:10,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:10,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471557975] [2021-11-12 23:15:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:10,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:10,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:10,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:10,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:15:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:11,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:15:11,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:11,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:15:11,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:15:11,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:15:11,812 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-12 23:15:11,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-12 23:15:11,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:15:11,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:15:11,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:15:12,257 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-12 23:15:12,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-12 23:15:14,678 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:15:14,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-12 23:15:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-12 23:15:15,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-12 23:15:16,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:16,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471557975] [2021-11-12 23:15:16,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471557975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:15:16,231 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:15:16,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 23:15:16,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520918325] [2021-11-12 23:15:16,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:16,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:15:16,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:15:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:15:16,233 INFO L87 Difference]: Start difference. First operand 1365 states and 2060 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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) [2021-11-12 23:15:18,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:28,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:31,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:38,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:43,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:54,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:56,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:59,193 INFO L93 Difference]: Finished difference Result 5999 states and 9087 transitions. [2021-11-12 23:15:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:15:59,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 421 [2021-11-12 23:15:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:59,226 INFO L225 Difference]: With dead ends: 5999 [2021-11-12 23:15:59,226 INFO L226 Difference]: Without dead ends: 4644 [2021-11-12 23:15:59,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 834 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:15:59,231 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 349 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41583.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.65ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42629.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:59,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 866 Invalid, 866 Unknown, 0 Unchecked, 10.65ms Time], IncrementalHoareTripleChecker [86 Valid, 779 Invalid, 1 Unknown, 0 Unchecked, 42629.26ms Time] [2021-11-12 23:15:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-11-12 23:15:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 1834. [2021-11-12 23:15:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.5897435897435896) internal successors, (2914), 1833 states have internal predecessors, (2914), 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) [2021-11-12 23:15:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2914 transitions. [2021-11-12 23:15:59,388 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2914 transitions. Word has length 421 [2021-11-12 23:15:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:59,389 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2914 transitions. [2021-11-12 23:15:59,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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) [2021-11-12 23:15:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2914 transitions. [2021-11-12 23:15:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-12 23:15:59,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:59,396 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-11-12 23:15:59,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:59,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:59,609 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1803946925, now seen corresponding path program 1 times [2021-11-12 23:15:59,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:59,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312934019] [2021-11-12 23:15:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:59,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:59,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:59,613 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:59,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:16:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:08,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-12 23:16:08,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:04,794 WARN L227 SmtUtils]: Spent 1.94m on a formula simplification. DAG size of input: 59 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:18:04,795 INFO L354 Elim1Store]: treesize reduction 176, result has 15.8 percent of original size [2021-11-12 23:18:04,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 4276 treesize of output 4289 [2021-11-12 23:18:04,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 4278 treesize of output 4242 [2021-11-12 23:18:04,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:18:04,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5362 [2021-11-12 23:18:04,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 5624 treesize of output 5346 [2021-11-12 23:18:04,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:04,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:18:05,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 4425 treesize of output 4210 [2021-11-12 23:18:05,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:05,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312934019] [2021-11-12 23:18:05,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-12 23:18:05,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2126061526] [2021-11-12 23:18:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:05,122 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:18:05,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:18:05,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b2e64-a650-4ece-915b-d1899c5e25c4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process