./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.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_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/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_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/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_143a6f71-0dc6-4c78-8e85-2528720696e3/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 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:00,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:00,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:01,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:01,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:01,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:01,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:01,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:01,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:01,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:01,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:01,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:01,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:01,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:01,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:01,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:01,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:01,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:01,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:01,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:01,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:01,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:01,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:01,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:01,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:01,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:01,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:01,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:01,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:01,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:01,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:01,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:01,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:01,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:01,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:01,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:01,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:01,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:01,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:01,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:01,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:01,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:20:01,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:01,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:01,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:01,144 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:01,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:01,145 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:01,145 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:01,145 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:01,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:01,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:01,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:01,154 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:01,154 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:01,154 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:01,154 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:01,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:01,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:01,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:01,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:01,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:01,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:01,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:01,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:01,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:01,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:01,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:01,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:01,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:01,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:01,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:01,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:01,161 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:01,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:01,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:01,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:01,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:01,162 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_143a6f71-0dc6-4c78-8e85-2528720696e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 [2021-11-07 01:20:01,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:01,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:01,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:01,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:01,517 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:01,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 01:20:01,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/c0c132ccc/d6d2eed81e0746358de06a493cfd6792/FLAGc9bf68003 [2021-11-07 01:20:02,653 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:02,653 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 01:20:02,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/c0c132ccc/d6d2eed81e0746358de06a493cfd6792/FLAGc9bf68003 [2021-11-07 01:20:02,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/c0c132ccc/d6d2eed81e0746358de06a493cfd6792 [2021-11-07 01:20:02,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:02,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:02,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:02,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:02,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:02,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:02" (1/1) ... [2021-11-07 01:20:02,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c83668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:02, skipping insertion in model container [2021-11-07 01:20:02,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:02" (1/1) ... [2021-11-07 01:20:02,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:03,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:04,857 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 01:20:05,960 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 01:20:06,510 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 01:20:06,528 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 01:20:06,529 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 01:20:06,538 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 01:20:06,539 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 01:20:06,563 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 01:20:06,563 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 01:20:06,614 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 01:20:06,616 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 01:20:06,618 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 01:20:06,620 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 01:20:06,622 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 01:20:06,623 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 01:20:06,623 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 01:20:06,656 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 01:20:06,661 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 01:20:07,896 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_143a6f71-0dc6-4c78-8e85-2528720696e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-07 01:20:08,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:08,186 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 01:20:08,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e885045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:08, skipping insertion in model container [2021-11-07 01:20:08,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:08,187 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:20:08,190 INFO L168 Benchmark]: Toolchain (without parser) took 5227.16 ms. Allocated memory was 102.8 MB in the beginning and 213.9 MB in the end (delta: 111.1 MB). Free memory was 65.1 MB in the beginning and 117.9 MB in the end (delta: -52.8 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:08,191 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 79.8 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:08,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 5221.85 ms. Allocated memory was 102.8 MB in the beginning and 213.9 MB in the end (delta: 111.1 MB). Free memory was 64.8 MB in the beginning and 117.9 MB in the end (delta: -53.1 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:08,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 79.8 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 5221.85 ms. Allocated memory was 102.8 MB in the beginning and 213.9 MB in the end (delta: 111.1 MB). Free memory was 64.8 MB in the beginning and 117.9 MB in the end (delta: -53.1 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6418]: 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_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/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_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/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_143a6f71-0dc6-4c78-8e85-2528720696e3/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 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:10,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:10,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:10,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:10,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:10,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:10,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:10,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:10,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:10,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:10,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:10,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:10,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:10,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:10,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:10,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:10,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:10,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:10,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:10,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:10,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:10,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:10,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:10,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:10,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:10,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:10,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:10,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:10,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:10,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:10,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:10,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:10,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:10,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:10,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:10,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:10,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:10,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:10,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:10,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:10,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:10,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:20:10,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:10,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:10,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:10,582 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:10,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:10,582 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:10,582 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:10,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:10,584 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:10,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:10,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:10,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:10,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:10,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:10,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:10,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:20:10,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:20:10,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:10,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:10,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:10,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:10,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:20:10,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:10,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:10,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:10,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:10,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:10,592 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:20:10,592 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:20:10,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:10,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:10,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:10,593 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_143a6f71-0dc6-4c78-8e85-2528720696e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 [2021-11-07 01:20:11,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:11,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:11,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:11,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:11,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:11,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 01:20:11,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/35bc074a1/f91d7926884c46ea9c097e7082245c28/FLAG57701a3ca [2021-11-07 01:20:12,361 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:12,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 01:20:12,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/35bc074a1/f91d7926884c46ea9c097e7082245c28/FLAG57701a3ca [2021-11-07 01:20:12,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/data/35bc074a1/f91d7926884c46ea9c097e7082245c28 [2021-11-07 01:20:12,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:12,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:12,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:12,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:12,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:12,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:12" (1/1) ... [2021-11-07 01:20:12,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579a5a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:12, skipping insertion in model container [2021-11-07 01:20:12,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:12" (1/1) ... [2021-11-07 01:20:12,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:12,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:17,604 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_143a6f71-0dc6-4c78-8e85-2528720696e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-07 01:20:17,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:17,874 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:20:17,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:18,678 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_143a6f71-0dc6-4c78-8e85-2528720696e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-07 01:20:18,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:18,759 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:20:19,478 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_143a6f71-0dc6-4c78-8e85-2528720696e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-07 01:20:19,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:19,884 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:20:19,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19 WrapperNode [2021-11-07 01:20:19,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:19,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:19,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:20:19,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:20:19,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:20,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:21,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:21,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:20:21,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:20:21,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:20:21,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:21,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:21,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:21,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:22,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:23,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:23,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:23,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:20:23,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:20:23,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:20:23,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:20:23,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (1/1) ... [2021-11-07 01:20:23,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:23,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:20:23,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:20:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-07 01:20:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-07 01:20:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 01:20:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-07 01:20:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-07 01:20:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:20:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:20:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:20:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:20:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-07 01:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:20:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:20:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:20:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:20:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:20:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:20:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:20:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:20:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:20:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:20:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:20:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:20:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:20:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:20:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:20:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:20:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:20:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:20:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:26:07,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:26:07,962 INFO L299 CfgBuilder]: Removed 7570 assume(true) statements. [2021-11-07 01:26:07,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:26:07 BoogieIcfgContainer [2021-11-07 01:26:07,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:26:07,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:26:07,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:26:07,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:26:07,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:20:12" (1/3) ... [2021-11-07 01:26:07,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b66ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:26:07, skipping insertion in model container [2021-11-07 01:26:07,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:19" (2/3) ... [2021-11-07 01:26:07,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b66ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:26:07, skipping insertion in model container [2021-11-07 01:26:07,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:26:07" (3/3) ... [2021-11-07 01:26:07,983 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-07 01:26:07,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:26:07,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-11-07 01:26:08,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:26:08,092 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 01:26:08,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-11-07 01:26:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 8185 states, 8122 states have (on average 1.3697365180989904) internal successors, (11125), 8162 states have internal predecessors, (11125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 01:26:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:26:08,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:08,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:08,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:26:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1238528597, now seen corresponding path program 1 times [2021-11-07 01:26:08,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:08,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582961630] [2021-11-07 01:26:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:08,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:08,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:08,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:08,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:26:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:20,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 5558 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:26:20,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:20,548 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 01:26:20,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:20,786 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 01:26:20,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:20,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582961630] [2021-11-07 01:26:20,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582961630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:20,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:20,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:26:20,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888944297] [2021-11-07 01:26:20,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:26:20,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:26:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:26:20,842 INFO L87 Difference]: Start difference. First operand has 8185 states, 8122 states have (on average 1.3697365180989904) internal successors, (11125), 8162 states have internal predecessors, (11125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 01:26:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:21,221 INFO L93 Difference]: Finished difference Result 16366 states and 22325 transitions. [2021-11-07 01:26:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:26:21,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 46 [2021-11-07 01:26:21,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:21,311 INFO L225 Difference]: With dead ends: 16366 [2021-11-07 01:26:21,311 INFO L226 Difference]: Without dead ends: 7639 [2021-11-07 01:26:21,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:26:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2021-11-07 01:26:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7639. [2021-11-07 01:26:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 7577 states have (on average 1.3079055034974265) internal successors, (9910), 7616 states have internal predecessors, (9910), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 01:26:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 9950 transitions. [2021-11-07 01:26:21,820 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 9950 transitions. Word has length 46 [2021-11-07 01:26:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:21,821 INFO L470 AbstractCegarLoop]: Abstraction has 7639 states and 9950 transitions. [2021-11-07 01:26:21,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 01:26:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 9950 transitions. [2021-11-07 01:26:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:26:21,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:21,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:21,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:26:22,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:22,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:26:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 481683929, now seen corresponding path program 1 times [2021-11-07 01:26:22,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:22,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851764717] [2021-11-07 01:26:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:22,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:22,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:22,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:26:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:33,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 5558 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:33,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:34,153 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 01:26:34,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:34,511 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 01:26:34,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:34,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851764717] [2021-11-07 01:26:34,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851764717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:34,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:34,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:26:34,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574263069] [2021-11-07 01:26:34,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:26:34,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:26:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:26:34,516 INFO L87 Difference]: Start difference. First operand 7639 states and 9950 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:26:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:36,534 INFO L93 Difference]: Finished difference Result 15278 states and 19907 transitions. [2021-11-07 01:26:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:26:36,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:26:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:36,593 INFO L225 Difference]: With dead ends: 15278 [2021-11-07 01:26:36,593 INFO L226 Difference]: Without dead ends: 7647 [2021-11-07 01:26:36,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 01:26:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7647 states. [2021-11-07 01:26:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7647 to 7647. [2021-11-07 01:26:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7647 states, 7585 states have (on average 1.3075807514831905) internal successors, (9918), 7624 states have internal predecessors, (9918), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 01:26:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7647 states to 7647 states and 9958 transitions. [2021-11-07 01:26:36,985 INFO L78 Accepts]: Start accepts. Automaton has 7647 states and 9958 transitions. Word has length 46 [2021-11-07 01:26:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:36,985 INFO L470 AbstractCegarLoop]: Abstraction has 7647 states and 9958 transitions. [2021-11-07 01:26:36,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:26:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7647 states and 9958 transitions. [2021-11-07 01:26:36,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:26:36,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:36,992 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] [2021-11-07 01:26:37,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:37,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:37,206 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:26:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash -916288615, now seen corresponding path program 1 times [2021-11-07 01:26:37,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:37,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092334276] [2021-11-07 01:26:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:37,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:37,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:37,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:26:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:49,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 5578 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:49,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:50,071 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 01:26:50,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:50,816 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 01:26:50,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:50,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092334276] [2021-11-07 01:26:50,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092334276] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:50,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1742941257] [2021-11-07 01:26:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:50,818 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:50,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:50,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:50,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:26:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 5578 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:54,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:54,727 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 01:26:54,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:55,059 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 01:26:55,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1742941257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:55,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:55,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:55,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198159972] [2021-11-07 01:26:55,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:55,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:55,063 INFO L87 Difference]: Start difference. First operand 7647 states and 9958 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 01:26:56,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:56,740 INFO L93 Difference]: Finished difference Result 20796 states and 27059 transitions. [2021-11-07 01:26:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:56,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 50 [2021-11-07 01:26:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:56,848 INFO L225 Difference]: With dead ends: 20796 [2021-11-07 01:26:56,849 INFO L226 Difference]: Without dead ends: 13164 [2021-11-07 01:26:56,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2021-11-07 01:26:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 12885. [2021-11-07 01:26:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12885 states, 12809 states have (on average 1.3067374502303069) internal successors, (16738), 12849 states have internal predecessors, (16738), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-07 01:26:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 16804 transitions. [2021-11-07 01:26:57,341 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 16804 transitions. Word has length 50 [2021-11-07 01:26:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:57,341 INFO L470 AbstractCegarLoop]: Abstraction has 12885 states and 16804 transitions. [2021-11-07 01:26:57,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 01:26:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 16804 transitions. [2021-11-07 01:26:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:26:57,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:57,354 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:57,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:57,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:57,769 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:26:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -492055439, now seen corresponding path program 1 times [2021-11-07 01:26:57,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:57,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745964251] [2021-11-07 01:26:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:57,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:57,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:57,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:27:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:09,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 5653 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:09,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:10,389 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 01:27:10,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:11,169 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 01:27:11,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:11,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745964251] [2021-11-07 01:27:11,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745964251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:11,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [770942281] [2021-11-07 01:27:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:11,172 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:11,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:11,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:11,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:27:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:14,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 5653 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:27:14,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:15,644 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 01:27:15,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:16,212 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 01:27:16,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [770942281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:16,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:27:16,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:27:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757611205] [2021-11-07 01:27:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:16,215 INFO L87 Difference]: Start difference. First operand 12885 states and 16804 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 01:27:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:18,123 INFO L93 Difference]: Finished difference Result 53641 states and 70096 transitions. [2021-11-07 01:27:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2021-11-07 01:27:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:18,254 INFO L225 Difference]: With dead ends: 53641 [2021-11-07 01:27:18,255 INFO L226 Difference]: Without dead ends: 40771 [2021-11-07 01:27:18,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:27:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40771 states. [2021-11-07 01:27:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40771 to 20999. [2021-11-07 01:27:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20999 states, 20887 states have (on average 1.3100971896394886) internal successors, (27364), 20928 states have internal predecessors, (27364), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-07 01:27:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 27496 transitions. [2021-11-07 01:27:19,434 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 27496 transitions. Word has length 69 [2021-11-07 01:27:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:19,436 INFO L470 AbstractCegarLoop]: Abstraction has 20999 states and 27496 transitions. [2021-11-07 01:27:19,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 01:27:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 27496 transitions. [2021-11-07 01:27:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:27:19,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:19,446 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:19,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:19,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:19,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:19,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:27:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2029652686, now seen corresponding path program 1 times [2021-11-07 01:27:19,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:19,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929874653] [2021-11-07 01:27:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:19,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:19,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:19,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:27:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:32,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 5655 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:32,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:33,214 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 01:27:33,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:33,955 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 01:27:33,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:33,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929874653] [2021-11-07 01:27:33,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929874653] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:33,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10985700] [2021-11-07 01:27:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:33,957 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:33,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:33,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:27:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:37,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 5655 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:27:37,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:38,128 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 01:27:38,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:38,687 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 01:27:38,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10985700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:38,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:27:38,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:27:38,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937906192] [2021-11-07 01:27:38,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:38,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:38,693 INFO L87 Difference]: Start difference. First operand 20999 states and 27496 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 01:27:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:41,401 INFO L93 Difference]: Finished difference Result 94049 states and 123314 transitions. [2021-11-07 01:27:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 70 [2021-11-07 01:27:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:41,885 INFO L225 Difference]: With dead ends: 94049 [2021-11-07 01:27:41,886 INFO L226 Difference]: Without dead ends: 73065 [2021-11-07 01:27:41,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:27:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73065 states. [2021-11-07 01:27:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73065 to 40737. [2021-11-07 01:27:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40737 states, 40553 states have (on average 1.310630532882894) internal successors, (53150), 40596 states have internal predecessors, (53150), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-07 01:27:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40737 states to 40737 states and 53414 transitions. [2021-11-07 01:27:44,431 INFO L78 Accepts]: Start accepts. Automaton has 40737 states and 53414 transitions. Word has length 70 [2021-11-07 01:27:44,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:44,432 INFO L470 AbstractCegarLoop]: Abstraction has 40737 states and 53414 transitions. [2021-11-07 01:27:44,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 01:27:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 40737 states and 53414 transitions. [2021-11-07 01:27:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:27:44,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:44,441 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:44,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:44,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:44,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:44,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:27:44,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1401771983, now seen corresponding path program 1 times [2021-11-07 01:27:44,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:44,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426855112] [2021-11-07 01:27:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:44,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:44,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:44,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:27:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:57,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 5657 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:57,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:58,438 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 01:27:58,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:59,134 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 01:27:59,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:59,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426855112] [2021-11-07 01:27:59,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426855112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:59,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [872766674] [2021-11-07 01:27:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:59,135 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:59,136 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:59,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:28:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:03,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 5657 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:03,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:03,954 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 01:28:03,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:04,480 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 01:28:04,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [872766674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:04,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:28:04,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:28:04,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629099117] [2021-11-07 01:28:04,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:04,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:04,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:04,484 INFO L87 Difference]: Start difference. First operand 40737 states and 53414 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:09,082 INFO L93 Difference]: Finished difference Result 184253 states and 241862 transitions. [2021-11-07 01:28:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:28:09,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:28:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:09,535 INFO L225 Difference]: With dead ends: 184253 [2021-11-07 01:28:09,536 INFO L226 Difference]: Without dead ends: 143531 [2021-11-07 01:28:09,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:28:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143531 states. [2021-11-07 01:28:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143531 to 79053. [2021-11-07 01:28:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79053 states, 78725 states have (on average 1.3110701810098444) internal successors, (103214), 78772 states have internal predecessors, (103214), 264 states have call successors, (264), 24 states have call predecessors, (264), 24 states have return successors, (264), 256 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-07 01:28:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79053 states to 79053 states and 103742 transitions. [2021-11-07 01:28:14,718 INFO L78 Accepts]: Start accepts. Automaton has 79053 states and 103742 transitions. Word has length 71 [2021-11-07 01:28:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:14,719 INFO L470 AbstractCegarLoop]: Abstraction has 79053 states and 103742 transitions. [2021-11-07 01:28:14,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 79053 states and 103742 transitions. [2021-11-07 01:28:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:28:14,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:14,731 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:14,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:14,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:15,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:15,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:28:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash -401752242, now seen corresponding path program 1 times [2021-11-07 01:28:15,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:15,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904642205] [2021-11-07 01:28:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:15,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:15,178 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:28:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:27,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 5659 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:28:27,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:28,542 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 01:28:28,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:29,174 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 01:28:29,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:29,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904642205] [2021-11-07 01:28:29,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904642205] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:29,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222078909] [2021-11-07 01:28:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:29,175 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:29,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:29,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:29,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_143a6f71-0dc6-4c78-8e85-2528720696e3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:28:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 5659 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:33,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:33,723 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 01:28:33,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:34,313 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 01:28:34,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222078909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:34,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:28:34,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:28:34,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662679162] [2021-11-07 01:28:34,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:34,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:34,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:34,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:34,315 INFO L87 Difference]: Start difference. First operand 79053 states and 103742 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 01:28:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:44,596 INFO L93 Difference]: Finished difference Result 361173 states and 474410 transitions. [2021-11-07 01:28:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:28:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 72 [2021-11-07 01:28:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:45,879 INFO L225 Difference]: With dead ends: 361173 [2021-11-07 01:28:45,879 INFO L226 Difference]: Without dead ends: 282135 [2021-11-07 01:28:46,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:28:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282135 states.