./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:30,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:30,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:30,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:30,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:30,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:30,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:30,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:30,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:30,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:30,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:30,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:30,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:30,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:30,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:30,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:30,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:30,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:30,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:30,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:30,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:30,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:30,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:30,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:30,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:30,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:30,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:30,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:30,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:30,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:30,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:30,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:30,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:30,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:30,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:30,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:30,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:30,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:30,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:30,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:30,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:30,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:05:30,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:30,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:30,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:30,216 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:30,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:30,216 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:30,216 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:05:30,217 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:30,217 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:30,217 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:05:30,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:05:30,218 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:30,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:05:30,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:05:30,218 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:05:30,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:30,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:05:30,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:30,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:30,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:30,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:30,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:30,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:30,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:30,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:30,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:30,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:30,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:30,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:30,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:30,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:30,223 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:05:30,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:05:30,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:30,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:30,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:30,224 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_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2021-11-07 01:05:30,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:30,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:30,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:30,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:30,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:30,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 01:05:30,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/d5af7d30b/4c57106e6cbb405a9321f879302ca48c/FLAG97253feb3 [2021-11-07 01:05:31,693 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:31,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 01:05:31,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/d5af7d30b/4c57106e6cbb405a9321f879302ca48c/FLAG97253feb3 [2021-11-07 01:05:32,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/d5af7d30b/4c57106e6cbb405a9321f879302ca48c [2021-11-07 01:05:32,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:32,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:32,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:32,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:32,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:32,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:32" (1/1) ... [2021-11-07 01:05:32,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4574b9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:32, skipping insertion in model container [2021-11-07 01:05:32,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:32" (1/1) ... [2021-11-07 01:05:32,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:32,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:33,302 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_8061eea9-ad70-408c-8143-23dcf4a4660e/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-11-07 01:05:33,677 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,684 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,697 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,730 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,737 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,743 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,751 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,758 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,767 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,774 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,784 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,953 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,954 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,976 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:33,979 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,090 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,150 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,168 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,172 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,176 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,202 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,203 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,205 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,206 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,209 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,210 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,210 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,216 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,217 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,226 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:05:34,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:34,385 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:05:34,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ea2c93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:34, skipping insertion in model container [2021-11-07 01:05:34,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:34,386 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:05:34,389 INFO L168 Benchmark]: Toolchain (without parser) took 2236.09 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 95.2 MB in the beginning and 104.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:34,389 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 121.6 MB. Free memory is still 95.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:34,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2231.75 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 94.8 MB in the beginning and 104.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 72.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:34,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 121.6 MB. Free memory is still 95.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2231.75 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 94.8 MB in the beginning and 104.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 72.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3675]: 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_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:36,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:36,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:36,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:36,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:36,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:36,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:36,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:36,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:36,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:36,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:36,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:36,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:36,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:36,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:36,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:36,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:36,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:36,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:36,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:36,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:36,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:36,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:36,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:36,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:36,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:36,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:36,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:36,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:36,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:36,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:36,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:36,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:36,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:36,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:36,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:36,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:36,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:36,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:36,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:36,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:36,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:05:36,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:36,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:36,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:36,770 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:36,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:36,770 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:36,770 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:36,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:36,771 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:36,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:36,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:36,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:36,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:36,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:36,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:36,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:05:36,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:05:36,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:36,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:36,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:36,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:36,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:05:36,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:36,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:36,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:36,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:36,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:36,776 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:05:36,776 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:36,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:36,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:36,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:36,777 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_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2021-11-07 01:05:37,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:37,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:37,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:37,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:37,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:37,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 01:05:37,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/34fc981b5/4427bc649355458cb7b4b1b2bea5db6d/FLAGcbf68afbe [2021-11-07 01:05:38,314 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:38,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 01:05:38,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/34fc981b5/4427bc649355458cb7b4b1b2bea5db6d/FLAGcbf68afbe [2021-11-07 01:05:38,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/data/34fc981b5/4427bc649355458cb7b4b1b2bea5db6d [2021-11-07 01:05:38,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:38,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:38,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:38,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:38,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:38,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:38,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651830b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38, skipping insertion in model container [2021-11-07 01:05:38,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:38,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:38,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:40,075 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_8061eea9-ad70-408c-8143-23dcf4a4660e/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-11-07 01:05:40,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:41,039 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:05:41,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:41,227 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_8061eea9-ad70-408c-8143-23dcf4a4660e/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-11-07 01:05:41,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:41,578 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:05:41,674 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_8061eea9-ad70-408c-8143-23dcf4a4660e/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-11-07 01:05:41,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:42,123 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:05:42,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42 WrapperNode [2021-11-07 01:05:42,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:42,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:42,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:05:42,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:05:42,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:42,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:05:42,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:05:42,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:05:42,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:43,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:43,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:43,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:43,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:05:43,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:05:43,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:05:43,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:05:43,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:43,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:43,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:05:43,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:05:43,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:05:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:05:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:05:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 01:05:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:05:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:05:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:05:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:05:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:05:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:05:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:05:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:05:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:05:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:05:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:05:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:05:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:05:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:05:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:05:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:05:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:05:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:05:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:05:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:05:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:05:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:05:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:08:54,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:08:54,663 INFO L299 CfgBuilder]: Removed 1746 assume(true) statements. [2021-11-07 01:08:54,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:54 BoogieIcfgContainer [2021-11-07 01:08:54,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:08:54,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:08:54,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:08:54,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:08:54,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:38" (1/3) ... [2021-11-07 01:08:54,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a5fe0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:54, skipping insertion in model container [2021-11-07 01:08:54,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42" (2/3) ... [2021-11-07 01:08:54,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a5fe0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:54, skipping insertion in model container [2021-11-07 01:08:54,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:54" (3/3) ... [2021-11-07 01:08:54,678 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-07 01:08:54,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:08:54,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-07 01:08:54,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:08:54,763 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:08:54,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-07 01:08:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 2043 states, 1971 states have (on average 1.4662607813292745) internal successors, (2890), 2042 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:08:54,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:54,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:54,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:08:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash -196032821, now seen corresponding path program 1 times [2021-11-07 01:08:54,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:54,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870217870] [2021-11-07 01:08:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:54,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:54,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:54,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:54,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:09:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:07,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:09:07,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:08,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:08,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:08,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870217870] [2021-11-07 01:09:08,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870217870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:08,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:08,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:09:08,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153364477] [2021-11-07 01:09:08,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:09:08,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:09:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:09:08,386 INFO L87 Difference]: Start difference. First operand has 2043 states, 1971 states have (on average 1.4662607813292745) internal successors, (2890), 2042 states have internal predecessors, (2890), 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 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:08,637 INFO L93 Difference]: Finished difference Result 4083 states and 5777 transitions. [2021-11-07 01:09:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:09:08,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 31 [2021-11-07 01:09:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:08,878 INFO L225 Difference]: With dead ends: 4083 [2021-11-07 01:09:08,878 INFO L226 Difference]: Without dead ends: 2034 [2021-11-07 01:09:08,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:09:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-11-07 01:09:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 2034. [2021-11-07 01:09:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 1963 states have (on average 1.4004075394803872) internal successors, (2749), 2033 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2749 transitions. [2021-11-07 01:09:09,086 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2749 transitions. Word has length 31 [2021-11-07 01:09:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:09,087 INFO L470 AbstractCegarLoop]: Abstraction has 2034 states and 2749 transitions. [2021-11-07 01:09:09,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2749 transitions. [2021-11-07 01:09:09,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:09:09,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:09,097 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:09,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:09:09,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:09,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:09:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1382640331, now seen corresponding path program 1 times [2021-11-07 01:09:09,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:09,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885232239] [2021-11-07 01:09:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:09,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:09,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:09,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:09,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:09:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:09:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:22,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:23,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:23,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885232239] [2021-11-07 01:09:23,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885232239] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:23,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452122173] [2021-11-07 01:09:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:23,152 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:23,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:09:23,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:09:23,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:09:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:26,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:09:26,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:09:26,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:09:26,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452122173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:26,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:09:26,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:09:26,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300912550] [2021-11-07 01:09:26,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:09:26,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:26,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:09:26,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:09:26,487 INFO L87 Difference]: Start difference. First operand 2034 states and 2749 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:30,652 INFO L93 Difference]: Finished difference Result 5464 states and 7386 transitions. [2021-11-07 01:09:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:09:30,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 01:09:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:30,675 INFO L225 Difference]: With dead ends: 5464 [2021-11-07 01:09:30,675 INFO L226 Difference]: Without dead ends: 3482 [2021-11-07 01:09:30,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:09:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-11-07 01:09:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3340. [2021-11-07 01:09:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 3269 states have (on average 1.4071581523401653) internal successors, (4600), 3339 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4600 transitions. [2021-11-07 01:09:30,806 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4600 transitions. Word has length 33 [2021-11-07 01:09:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:30,806 INFO L470 AbstractCegarLoop]: Abstraction has 3340 states and 4600 transitions. [2021-11-07 01:09:30,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4600 transitions. [2021-11-07 01:09:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:09:30,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:30,809 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:30,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:31,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:31,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:31,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:09:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1887422776, now seen corresponding path program 1 times [2021-11-07 01:09:31,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:31,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334823338] [2021-11-07 01:09:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:31,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:31,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:31,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:31,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:09:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:44,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:09:44,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:44,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:45,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:45,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334823338] [2021-11-07 01:09:45,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334823338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:45,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [331441064] [2021-11-07 01:09:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:45,154 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:09:45,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:09:45,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:09:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:47,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:09:47,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:09:48,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:09:48,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [331441064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:48,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:09:48,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:09:48,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388735810] [2021-11-07 01:09:48,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:09:48,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:48,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:09:48,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:09:48,190 INFO L87 Difference]: Start difference. First operand 3340 states and 4600 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:49,061 INFO L93 Difference]: Finished difference Result 8432 states and 11660 transitions. [2021-11-07 01:09:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:09:49,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 34 [2021-11-07 01:09:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:49,101 INFO L225 Difference]: With dead ends: 8432 [2021-11-07 01:09:49,102 INFO L226 Difference]: Without dead ends: 5144 [2021-11-07 01:09:49,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:09:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2021-11-07 01:09:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5040. [2021-11-07 01:09:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 4969 states have (on average 1.42141275910646) internal successors, (7063), 5039 states have internal predecessors, (7063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 7063 transitions. [2021-11-07 01:09:49,325 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 7063 transitions. Word has length 34 [2021-11-07 01:09:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:49,326 INFO L470 AbstractCegarLoop]: Abstraction has 5040 states and 7063 transitions. [2021-11-07 01:09:49,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 7063 transitions. [2021-11-07 01:09:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:09:49,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:49,331 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:49,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:49,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:09:49,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:49,754 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:09:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2019884597, now seen corresponding path program 1 times [2021-11-07 01:09:49,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:49,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723168569] [2021-11-07 01:09:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:49,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:49,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:49,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:49,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:10:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:02,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:02,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:03,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:03,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:03,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723168569] [2021-11-07 01:10:03,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723168569] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:03,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1718458453] [2021-11-07 01:10:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:03,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:03,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:03,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:10:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:06,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:10:06,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:06,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:06,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1718458453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:06,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:10:06,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:10:06,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763320220] [2021-11-07 01:10:06,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:10:06,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:06,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:10:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:06,907 INFO L87 Difference]: Start difference. First operand 5040 states and 7063 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:09,693 INFO L93 Difference]: Finished difference Result 5040 states and 7063 transitions. [2021-11-07 01:10:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:10:09,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 37 [2021-11-07 01:10:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:09,723 INFO L225 Difference]: With dead ends: 5040 [2021-11-07 01:10:09,724 INFO L226 Difference]: Without dead ends: 5028 [2021-11-07 01:10:09,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-11-07 01:10:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 5028. [2021-11-07 01:10:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 4963 states have (on average 1.4193028410235744) internal successors, (7044), 5027 states have internal predecessors, (7044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7044 transitions. [2021-11-07 01:10:09,926 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7044 transitions. Word has length 37 [2021-11-07 01:10:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:09,927 INFO L470 AbstractCegarLoop]: Abstraction has 5028 states and 7044 transitions. [2021-11-07 01:10:09,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7044 transitions. [2021-11-07 01:10:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:10:09,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:09,928 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:09,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:10,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:10,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:10,341 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:10:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1808092102, now seen corresponding path program 1 times [2021-11-07 01:10:10,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:10,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852315216] [2021-11-07 01:10:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:10,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:10,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:10,351 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:10,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:10:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:22,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:22,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:23,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:23,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:23,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852315216] [2021-11-07 01:10:23,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852315216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:23,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [677661985] [2021-11-07 01:10:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:23,848 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:23,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:23,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:10:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:26,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:10:26,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:26,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:27,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [677661985] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:27,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:10:27,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:10:27,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739181680] [2021-11-07 01:10:27,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:10:27,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:10:27,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:27,033 INFO L87 Difference]: Start difference. First operand 5028 states and 7044 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:30,410 INFO L93 Difference]: Finished difference Result 10945 states and 15378 transitions. [2021-11-07 01:10:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:10:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:10:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:30,446 INFO L225 Difference]: With dead ends: 10945 [2021-11-07 01:10:30,446 INFO L226 Difference]: Without dead ends: 5969 [2021-11-07 01:10:30,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2021-11-07 01:10:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 5939. [2021-11-07 01:10:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5884 states have (on average 1.4075458871515976) internal successors, (8282), 5938 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 8282 transitions. [2021-11-07 01:10:30,685 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 8282 transitions. Word has length 38 [2021-11-07 01:10:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:30,685 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 8282 transitions. [2021-11-07 01:10:30,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 8282 transitions. [2021-11-07 01:10:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:10:30,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:30,688 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:30,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:30,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:31,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:31,110 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:10:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash 216285493, now seen corresponding path program 1 times [2021-11-07 01:10:31,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:31,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623721825] [2021-11-07 01:10:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:31,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:31,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:31,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:31,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:10:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:43,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:43,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:44,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:44,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:44,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623721825] [2021-11-07 01:10:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623721825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:44,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1214937558] [2021-11-07 01:10:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:44,596 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:44,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:44,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:10:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:47,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:10:47,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:47,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:48,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1214937558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:48,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:10:48,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:10:48,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948300135] [2021-11-07 01:10:48,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:10:48,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:10:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:48,035 INFO L87 Difference]: Start difference. First operand 5939 states and 8282 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:50,750 INFO L93 Difference]: Finished difference Result 5939 states and 8282 transitions. [2021-11-07 01:10:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:10:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 39 [2021-11-07 01:10:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:50,873 INFO L225 Difference]: With dead ends: 5939 [2021-11-07 01:10:50,873 INFO L226 Difference]: Without dead ends: 5932 [2021-11-07 01:10:50,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2021-11-07 01:10:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5932. [2021-11-07 01:10:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5932 states, 5878 states have (on average 1.4067710105478053) internal successors, (8269), 5931 states have internal predecessors, (8269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 8269 transitions. [2021-11-07 01:10:51,102 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 8269 transitions. Word has length 39 [2021-11-07 01:10:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:51,103 INFO L470 AbstractCegarLoop]: Abstraction has 5932 states and 8269 transitions. [2021-11-07 01:10:51,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 8269 transitions. [2021-11-07 01:10:51,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:10:51,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:51,104 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:51,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:51,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:51,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:51,529 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:10:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash 261603094, now seen corresponding path program 1 times [2021-11-07 01:10:51,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:51,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726377695] [2021-11-07 01:10:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:51,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:51,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:51,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:51,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:11:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:04,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:11:04,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:04,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:05,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:05,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726377695] [2021-11-07 01:11:05,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726377695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:11:05,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [25084676] [2021-11-07 01:11:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:05,122 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:05,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:11:05,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:11:05,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:11:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:08,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:11:08,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:11:08,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:11:08,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [25084676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:08,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:11:08,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:11:08,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361072845] [2021-11-07 01:11:08,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:11:08,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:11:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:08,458 INFO L87 Difference]: Start difference. First operand 5932 states and 8269 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:09,272 INFO L93 Difference]: Finished difference Result 16226 states and 22657 transitions. [2021-11-07 01:11:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:11:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:09,305 INFO L225 Difference]: With dead ends: 16226 [2021-11-07 01:11:09,305 INFO L226 Difference]: Without dead ends: 10346 [2021-11-07 01:11:09,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2021-11-07 01:11:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 10236. [2021-11-07 01:11:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10236 states, 10182 states have (on average 1.410823021017482) internal successors, (14365), 10235 states have internal predecessors, (14365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10236 states to 10236 states and 14365 transitions. [2021-11-07 01:11:09,680 INFO L78 Accepts]: Start accepts. Automaton has 10236 states and 14365 transitions. Word has length 45 [2021-11-07 01:11:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:09,680 INFO L470 AbstractCegarLoop]: Abstraction has 10236 states and 14365 transitions. [2021-11-07 01:11:09,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10236 states and 14365 transitions. [2021-11-07 01:11:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:11:09,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:09,682 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:09,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:09,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-07 01:11:10,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:10,097 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:11:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 791520885, now seen corresponding path program 1 times [2021-11-07 01:11:10,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:10,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920008667] [2021-11-07 01:11:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:10,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:10,106 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:10,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:11:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:22,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:11:22,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:23,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:23,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:23,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920008667] [2021-11-07 01:11:23,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920008667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:11:23,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1833705159] [2021-11-07 01:11:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:23,887 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:11:23,888 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:11:23,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:11:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:26,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:11:26,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:11:27,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:11:27,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1833705159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:27,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:11:27,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:11:27,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253694549] [2021-11-07 01:11:27,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:11:27,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:27,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:11:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:27,352 INFO L87 Difference]: Start difference. First operand 10236 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:28,213 INFO L93 Difference]: Finished difference Result 29136 states and 40860 transitions. [2021-11-07 01:11:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 46 [2021-11-07 01:11:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:28,263 INFO L225 Difference]: With dead ends: 29136 [2021-11-07 01:11:28,263 INFO L226 Difference]: Without dead ends: 18952 [2021-11-07 01:11:28,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:28,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18952 states. [2021-11-07 01:11:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18952 to 18784. [2021-11-07 01:11:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18784 states, 18730 states have (on average 1.4097704217832354) internal successors, (26405), 18783 states have internal predecessors, (26405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18784 states to 18784 states and 26405 transitions. [2021-11-07 01:11:28,836 INFO L78 Accepts]: Start accepts. Automaton has 18784 states and 26405 transitions. Word has length 46 [2021-11-07 01:11:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:28,837 INFO L470 AbstractCegarLoop]: Abstraction has 18784 states and 26405 transitions. [2021-11-07 01:11:28,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 18784 states and 26405 transitions. [2021-11-07 01:11:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:11:28,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:28,838 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:28,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:29,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-07 01:11:29,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:29,253 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:11:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1945015984, now seen corresponding path program 1 times [2021-11-07 01:11:29,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:29,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155932719] [2021-11-07 01:11:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:29,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:29,259 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:29,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:11:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:11:41,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:42,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:42,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:42,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155932719] [2021-11-07 01:11:42,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155932719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:11:42,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1815003159] [2021-11-07 01:11:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:42,566 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:11:42,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:11:42,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:11:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:45,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:11:45,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:11:46,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:11:46,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1815003159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:46,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:11:46,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:11:46,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125958325] [2021-11-07 01:11:46,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:11:46,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:11:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:46,263 INFO L87 Difference]: Start difference. First operand 18784 states and 26405 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:47,612 INFO L93 Difference]: Finished difference Result 53726 states and 75538 transitions. [2021-11-07 01:11:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:47,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 47 [2021-11-07 01:11:47,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:47,701 INFO L225 Difference]: With dead ends: 53726 [2021-11-07 01:11:47,701 INFO L226 Difference]: Without dead ends: 34994 [2021-11-07 01:11:47,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34994 states. [2021-11-07 01:11:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34994 to 34848. [2021-11-07 01:11:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34848 states, 34794 states have (on average 1.4098120365580273) internal successors, (49053), 34847 states have internal predecessors, (49053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34848 states to 34848 states and 49053 transitions. [2021-11-07 01:11:48,783 INFO L78 Accepts]: Start accepts. Automaton has 34848 states and 49053 transitions. Word has length 47 [2021-11-07 01:11:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:48,783 INFO L470 AbstractCegarLoop]: Abstraction has 34848 states and 49053 transitions. [2021-11-07 01:11:48,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 34848 states and 49053 transitions. [2021-11-07 01:11:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:11:48,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:48,786 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:48,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:49,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:49,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:49,209 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:11:49,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:49,210 INFO L85 PathProgramCache]: Analyzing trace with hash 276161807, now seen corresponding path program 1 times [2021-11-07 01:11:49,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:49,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157466968] [2021-11-07 01:11:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:49,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:49,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:49,216 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:49,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:12:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:01,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:01,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:12:02,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:12:03,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:03,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157466968] [2021-11-07 01:12:03,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157466968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:03,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369562347] [2021-11-07 01:12:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:03,236 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:03,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:03,237 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:03,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:12:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:06,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:06,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:12:06,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:12:06,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369562347] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:06,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:12:06,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:12:06,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966674069] [2021-11-07 01:12:06,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:06,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:06,803 INFO L87 Difference]: Start difference. First operand 34848 states and 49053 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:08,115 INFO L93 Difference]: Finished difference Result 69648 states and 98047 transitions. [2021-11-07 01:12:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:08,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 76 [2021-11-07 01:12:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:08,170 INFO L225 Difference]: With dead ends: 69648 [2021-11-07 01:12:08,171 INFO L226 Difference]: Without dead ends: 34852 [2021-11-07 01:12:08,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34852 states. [2021-11-07 01:12:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34852 to 34428. [2021-11-07 01:12:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34428 states, 34374 states have (on average 1.41170652237156) internal successors, (48526), 34427 states have internal predecessors, (48526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34428 states to 34428 states and 48526 transitions. [2021-11-07 01:12:09,362 INFO L78 Accepts]: Start accepts. Automaton has 34428 states and 48526 transitions. Word has length 76 [2021-11-07 01:12:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:09,362 INFO L470 AbstractCegarLoop]: Abstraction has 34428 states and 48526 transitions. [2021-11-07 01:12:09,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 34428 states and 48526 transitions. [2021-11-07 01:12:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:12:09,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:09,365 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:09,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:09,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-07 01:12:09,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:09,781 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:12:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash -453511907, now seen corresponding path program 1 times [2021-11-07 01:12:09,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:09,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466869121] [2021-11-07 01:12:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:09,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:09,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:09,788 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:09,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:12:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:22,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2875 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:22,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:23,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:23,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:23,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466869121] [2021-11-07 01:12:23,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466869121] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:23,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [580637273] [2021-11-07 01:12:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:23,792 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:23,794 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:23,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 01:12:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2875 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:27,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:12:27,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:12:27,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [580637273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:27,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:12:27,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:12:27,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784629900] [2021-11-07 01:12:27,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:27,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:27,456 INFO L87 Difference]: Start difference. First operand 34428 states and 48526 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:31,407 INFO L93 Difference]: Finished difference Result 68752 states and 96964 transitions. [2021-11-07 01:12:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 01:12:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:31,445 INFO L225 Difference]: With dead ends: 68752 [2021-11-07 01:12:31,445 INFO L226 Difference]: Without dead ends: 34376 [2021-11-07 01:12:31,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34376 states. [2021-11-07 01:12:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34376 to 33785. [2021-11-07 01:12:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33785 states, 33760 states have (on average 1.3965047393364929) internal successors, (47146), 33784 states have internal predecessors, (47146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33785 states to 33785 states and 47146 transitions. [2021-11-07 01:12:32,660 INFO L78 Accepts]: Start accepts. Automaton has 33785 states and 47146 transitions. Word has length 78 [2021-11-07 01:12:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:32,660 INFO L470 AbstractCegarLoop]: Abstraction has 33785 states and 47146 transitions. [2021-11-07 01:12:32,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 33785 states and 47146 transitions. [2021-11-07 01:12:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:12:32,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:32,664 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:32,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:32,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:33,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:33,067 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:12:33,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1045169858, now seen corresponding path program 1 times [2021-11-07 01:12:33,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:33,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834672731] [2021-11-07 01:12:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:33,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:33,073 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:33,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:12:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:45,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:45,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:46,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:46,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:46,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834672731] [2021-11-07 01:12:46,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834672731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:46,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2110860486] [2021-11-07 01:12:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:46,829 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:46,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:46,830 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:46,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:12:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:50,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:50,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:12:50,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:12:50,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2110860486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:50,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:12:50,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:12:50,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833938087] [2021-11-07 01:12:50,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:50,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:50,501 INFO L87 Difference]: Start difference. First operand 33785 states and 47146 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:53,730 INFO L93 Difference]: Finished difference Result 33785 states and 47146 transitions. [2021-11-07 01:12:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 84 [2021-11-07 01:12:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:53,777 INFO L225 Difference]: With dead ends: 33785 [2021-11-07 01:12:53,777 INFO L226 Difference]: Without dead ends: 33773 [2021-11-07 01:12:53,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33773 states. [2021-11-07 01:12:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33773 to 33773. [2021-11-07 01:12:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33773 states, 33754 states have (on average 1.3923090596670025) internal successors, (46996), 33772 states have internal predecessors, (46996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33773 states to 33773 states and 46996 transitions. [2021-11-07 01:12:55,044 INFO L78 Accepts]: Start accepts. Automaton has 33773 states and 46996 transitions. Word has length 84 [2021-11-07 01:12:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:55,044 INFO L470 AbstractCegarLoop]: Abstraction has 33773 states and 46996 transitions. [2021-11-07 01:12:55,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 33773 states and 46996 transitions. [2021-11-07 01:12:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:12:55,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:55,063 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:55,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:55,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-07 01:12:55,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:55,489 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:12:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash 176505042, now seen corresponding path program 1 times [2021-11-07 01:12:55,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:55,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099172071] [2021-11-07 01:12:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:55,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:55,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:55,496 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:55,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:13:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:08,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:13:08,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:13:09,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:13:10,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:10,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099172071] [2021-11-07 01:13:10,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099172071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:10,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [202039145] [2021-11-07 01:13:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:10,712 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:10,713 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:10,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 01:13:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:14,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:13:14,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:15,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:15,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [202039145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:15,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:13:15,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 01:13:15,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474719834] [2021-11-07 01:13:15,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:13:15,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:13:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:13:15,754 INFO L87 Difference]: Start difference. First operand 33773 states and 46996 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:28,425 INFO L93 Difference]: Finished difference Result 166020 states and 231250 transitions. [2021-11-07 01:13:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:13:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-07 01:13:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:28,652 INFO L225 Difference]: With dead ends: 166020 [2021-11-07 01:13:28,652 INFO L226 Difference]: Without dead ends: 132299 [2021-11-07 01:13:28,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:13:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132299 states. [2021-11-07 01:13:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132299 to 33805. [2021-11-07 01:13:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33805 states, 33786 states have (on average 1.3914639199668501) internal successors, (47012), 33804 states have internal predecessors, (47012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33805 states to 33805 states and 47012 transitions. [2021-11-07 01:13:31,474 INFO L78 Accepts]: Start accepts. Automaton has 33805 states and 47012 transitions. Word has length 101 [2021-11-07 01:13:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:31,474 INFO L470 AbstractCegarLoop]: Abstraction has 33805 states and 47012 transitions. [2021-11-07 01:13:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 33805 states and 47012 transitions. [2021-11-07 01:13:31,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:13:31,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:31,494 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:31,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:31,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:31,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:31,902 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:13:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1826071080, now seen corresponding path program 1 times [2021-11-07 01:13:31,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:31,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390104703] [2021-11-07 01:13:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:31,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:31,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:31,912 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:31,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:13:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:45,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:13:45,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:13:46,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:13:46,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:46,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390104703] [2021-11-07 01:13:46,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390104703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:46,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1904779710] [2021-11-07 01:13:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:46,939 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:46,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:46,939 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:46,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 01:13:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:50,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:50,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:50,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:51,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1904779710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:51,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:13:51,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:13:51,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855778568] [2021-11-07 01:13:51,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:51,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:51,049 INFO L87 Difference]: Start difference. First operand 33805 states and 47012 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:56,413 INFO L93 Difference]: Finished difference Result 94143 states and 131178 transitions. [2021-11-07 01:13:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 01:13:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:56,503 INFO L225 Difference]: With dead ends: 94143 [2021-11-07 01:13:56,503 INFO L226 Difference]: Without dead ends: 60390 [2021-11-07 01:13:56,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60390 states. [2021-11-07 01:13:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60390 to 33837. [2021-11-07 01:13:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33837 states, 33818 states have (on average 1.3910639304512389) internal successors, (47043), 33836 states have internal predecessors, (47043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33837 states to 33837 states and 47043 transitions. [2021-11-07 01:13:58,937 INFO L78 Accepts]: Start accepts. Automaton has 33837 states and 47043 transitions. Word has length 103 [2021-11-07 01:13:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:58,938 INFO L470 AbstractCegarLoop]: Abstraction has 33837 states and 47043 transitions. [2021-11-07 01:13:58,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 33837 states and 47043 transitions. [2021-11-07 01:13:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:13:58,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:58,963 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:59,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-07 01:13:59,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:59,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:59,365 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:13:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:59,366 INFO L85 PathProgramCache]: Analyzing trace with hash -124641760, now seen corresponding path program 1 times [2021-11-07 01:13:59,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:59,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946820206] [2021-11-07 01:13:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:59,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:59,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:59,374 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:59,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-07 01:14:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:13,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:13,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:14:13,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:14:14,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:14,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946820206] [2021-11-07 01:14:14,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946820206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:14,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1885257461] [2021-11-07 01:14:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:14,647 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:14,648 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:14,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-07 01:14:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:18,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:18,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:18,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:19,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1885257461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:19,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:14:19,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:14:19,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971606854] [2021-11-07 01:14:19,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:19,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:19,248 INFO L87 Difference]: Start difference. First operand 33837 states and 47043 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:39,730 INFO L93 Difference]: Finished difference Result 163299 states and 227264 transitions. [2021-11-07 01:14:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:14:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 01:14:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:39,949 INFO L225 Difference]: With dead ends: 163299 [2021-11-07 01:14:39,949 INFO L226 Difference]: Without dead ends: 129514 [2021-11-07 01:14:39,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:14:40,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129514 states. [2021-11-07 01:14:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129514 to 33846. [2021-11-07 01:14:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33846 states, 33828 states have (on average 1.3902388553860707) internal successors, (47029), 33845 states have internal predecessors, (47029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33846 states to 33846 states and 47029 transitions. [2021-11-07 01:14:42,999 INFO L78 Accepts]: Start accepts. Automaton has 33846 states and 47029 transitions. Word has length 107 [2021-11-07 01:14:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:42,999 INFO L470 AbstractCegarLoop]: Abstraction has 33846 states and 47029 transitions. [2021-11-07 01:14:42,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 33846 states and 47029 transitions. [2021-11-07 01:14:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 01:14:43,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:43,033 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:43,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:43,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-07 01:14:43,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:43,437 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:14:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1962803009, now seen corresponding path program 1 times [2021-11-07 01:14:43,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:43,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087382642] [2021-11-07 01:14:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:43,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:43,444 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:43,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-07 01:14:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:57,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 3233 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:57,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:14:58,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:14:59,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:59,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087382642] [2021-11-07 01:14:59,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087382642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:59,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911430078] [2021-11-07 01:14:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:59,648 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:59,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:59,649 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:59,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-07 01:15:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:03,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 3233 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:03,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:15:04,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:15:04,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911430078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:04,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:04,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:04,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65538850] [2021-11-07 01:15:04,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:04,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:04,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:04,609 INFO L87 Difference]: Start difference. First operand 33846 states and 47029 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:14,655 INFO L93 Difference]: Finished difference Result 101114 states and 140483 transitions. [2021-11-07 01:15:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:14,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 143 [2021-11-07 01:15:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:14,746 INFO L225 Difference]: With dead ends: 101114 [2021-11-07 01:15:14,746 INFO L226 Difference]: Without dead ends: 67320 [2021-11-07 01:15:14,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67320 states. [2021-11-07 01:15:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67320 to 34294. [2021-11-07 01:15:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34294 states, 34276 states have (on average 1.3916734741510095) internal successors, (47701), 34293 states have internal predecessors, (47701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34294 states to 34294 states and 47701 transitions. [2021-11-07 01:15:17,520 INFO L78 Accepts]: Start accepts. Automaton has 34294 states and 47701 transitions. Word has length 143 [2021-11-07 01:15:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:17,520 INFO L470 AbstractCegarLoop]: Abstraction has 34294 states and 47701 transitions. [2021-11-07 01:15:17,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 34294 states and 47701 transitions. [2021-11-07 01:15:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 01:15:17,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:17,546 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:17,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:17,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-07 01:15:17,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:17,947 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:15:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 848359366, now seen corresponding path program 1 times [2021-11-07 01:15:17,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:17,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234160607] [2021-11-07 01:15:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:17,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:17,953 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:17,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-07 01:15:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:31,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:15:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:15:32,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:15:33,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:33,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234160607] [2021-11-07 01:15:33,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234160607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:33,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2015011786] [2021-11-07 01:15:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:33,504 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:33,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:33,504 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:33,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-07 01:15:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:37,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:15:37,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:15:38,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:15:38,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2015011786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:38,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:15:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324083202] [2021-11-07 01:15:38,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:15:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:15:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:15:38,535 INFO L87 Difference]: Start difference. First operand 34294 states and 47701 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:02,424 INFO L93 Difference]: Finished difference Result 168120 states and 233917 transitions. [2021-11-07 01:16:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:16:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 145 [2021-11-07 01:16:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:02,804 INFO L225 Difference]: With dead ends: 168120 [2021-11-07 01:16:02,804 INFO L226 Difference]: Without dead ends: 133878 [2021-11-07 01:16:02,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:16:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133878 states. [2021-11-07 01:16:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133878 to 35366. [2021-11-07 01:16:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35366 states, 35348 states have (on average 1.3947323752404661) internal successors, (49301), 35365 states have internal predecessors, (49301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35366 states to 35366 states and 49301 transitions. [2021-11-07 01:16:06,352 INFO L78 Accepts]: Start accepts. Automaton has 35366 states and 49301 transitions. Word has length 145 [2021-11-07 01:16:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:06,353 INFO L470 AbstractCegarLoop]: Abstraction has 35366 states and 49301 transitions. [2021-11-07 01:16:06,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 35366 states and 49301 transitions. [2021-11-07 01:16:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 01:16:06,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:06,381 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:06,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:06,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:06,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:06,797 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:16:06,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:06,798 INFO L85 PathProgramCache]: Analyzing trace with hash 338886276, now seen corresponding path program 1 times [2021-11-07 01:16:06,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:06,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045778911] [2021-11-07 01:16:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:06,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:06,804 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:06,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-07 01:16:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:21,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:16:21,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:16:22,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:16:23,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:23,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045778911] [2021-11-07 01:16:23,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045778911] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:23,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [277414551] [2021-11-07 01:16:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:23,409 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:23,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:23,417 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:23,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-07 01:16:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:27,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:16:27,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:16:28,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:16:28,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [277414551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:28,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:16:28,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:16:28,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536742634] [2021-11-07 01:16:28,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:28,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:28,722 INFO L87 Difference]: Start difference. First operand 35366 states and 49301 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:37,533 INFO L93 Difference]: Finished difference Result 136614 states and 190486 transitions. [2021-11-07 01:16:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:37,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 145 [2021-11-07 01:16:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:37,694 INFO L225 Difference]: With dead ends: 136614 [2021-11-07 01:16:37,695 INFO L226 Difference]: Without dead ends: 101300 [2021-11-07 01:16:37,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101300 states. [2021-11-07 01:16:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101300 to 35382. [2021-11-07 01:16:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35382 states, 35364 states have (on average 1.3945537835086528) internal successors, (49317), 35381 states have internal predecessors, (49317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35382 states to 35382 states and 49317 transitions. [2021-11-07 01:16:41,800 INFO L78 Accepts]: Start accepts. Automaton has 35382 states and 49317 transitions. Word has length 145 [2021-11-07 01:16:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:41,800 INFO L470 AbstractCegarLoop]: Abstraction has 35382 states and 49317 transitions. [2021-11-07 01:16:41,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 35382 states and 49317 transitions. [2021-11-07 01:16:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 01:16:41,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:41,857 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:41,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:42,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2021-11-07 01:16:42,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:42,273 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-07 01:16:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1119447522, now seen corresponding path program 1 times [2021-11-07 01:16:42,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:42,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116163026] [2021-11-07 01:16:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:42,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:42,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:42,281 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:42,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8061eea9-ad70-408c-8143-23dcf4a4660e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process