./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.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_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/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_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/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_55f0d5c1-4970-4404-8031-d4c23456f6da/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 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:34,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:34,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:34,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:34,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:34,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:34,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:34,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:34,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:34,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:34,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:34,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:34,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:34,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:34,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:34,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:34,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:34,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:34,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:34,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:34,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:34,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:34,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:34,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:34,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:34,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:34,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:34,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:34,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:34,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:34,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:34,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:34,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:34,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:34,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:35,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:35,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:35,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:35,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:35,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:35,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:35,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:25:35,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:35,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:35,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:35,034 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:35,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:35,035 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:35,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:25:35,035 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:35,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:35,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:25:35,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:25:35,036 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:35,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:25:35,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:25:35,037 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:25:35,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:35,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:25:35,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:35,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:35,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:35,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:35,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:35,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:35,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:35,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:35,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:35,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:35,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:35,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:35,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:35,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:35,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:25:35,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:25:35,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:35,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:35,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:35,041 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_55f0d5c1-4970-4404-8031-d4c23456f6da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 [2021-11-07 01:25:35,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:35,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:35,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:35,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:35,290 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:35,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:25:35,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/46eacc696/4871eaffcd59407ba987093a39f0715c/FLAG81ddd37e7 [2021-11-07 01:25:36,231 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:36,232 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:25:36,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/46eacc696/4871eaffcd59407ba987093a39f0715c/FLAG81ddd37e7 [2021-11-07 01:25:36,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/46eacc696/4871eaffcd59407ba987093a39f0715c [2021-11-07 01:25:36,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:36,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:36,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:36,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:36,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:36,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:36" (1/1) ... [2021-11-07 01:25:36,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e2afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:36, skipping insertion in model container [2021-11-07 01:25:36,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:36" (1/1) ... [2021-11-07 01:25:36,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:36,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:38,335 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 01:25:38,340 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 01:25:38,424 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 01:25:38,431 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 01:25:38,448 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 01:25:38,461 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 01:25:38,598 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 01:25:38,657 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 01:25:38,684 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:25:38,703 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 01:25:38,710 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 01:25:38,714 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 01:25:38,720 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 01:25:38,732 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 01:25:38,753 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 01:25:38,759 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 01:25:38,764 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 01:25:38,768 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 01:25:38,772 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 01:25:38,796 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 01:25:38,802 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 01:25:38,817 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 01:25:38,817 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 01:25:38,818 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 01:25:38,818 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 01:25:38,837 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_55f0d5c1-4970-4404-8031-d4c23456f6da/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-07 01:25:38,844 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 01:25:38,850 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 01:25:38,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:38,903 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 01:25:38,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34318d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:38, skipping insertion in model container [2021-11-07 01:25:38,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:38,904 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:25:38,906 INFO L168 Benchmark]: Toolchain (without parser) took 2166.39 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 53.9 MB in the beginning and 51.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:38,907 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:38,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2162.23 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 53.7 MB in the beginning and 51.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:38,909 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 92.3 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2162.23 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 53.7 MB in the beginning and 51.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4470]: 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_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/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_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/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_55f0d5c1-4970-4404-8031-d4c23456f6da/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 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:41,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:41,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:41,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:41,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:41,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:41,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:41,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:41,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:41,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:41,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:41,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:41,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:41,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:41,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:41,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:41,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:41,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:41,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:41,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:41,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:41,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:41,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:41,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:41,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:41,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:41,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:41,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:41,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:41,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:41,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:41,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:41,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:41,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:41,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:41,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:41,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:41,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:41,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:41,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:41,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:41,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:25:41,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:41,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:41,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:41,252 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:41,253 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:41,253 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:41,253 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:41,253 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:41,254 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:41,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:41,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:41,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:41,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:41,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:41,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:41,257 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:25:41,257 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:25:41,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:41,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:41,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:41,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:41,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:25:41,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:41,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:41,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:41,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:41,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:41,260 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:25:41,260 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:41,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:41,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:41,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:41,261 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_55f0d5c1-4970-4404-8031-d4c23456f6da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6150b3a515973ce4119efed812e463608b94129eea9915abf4784f091ce6f187 [2021-11-07 01:25:41,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:41,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:41,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:41,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:41,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:41,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:25:41,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/5310953c7/b112ce0975fe44d6bb9a0ffaf977313f/FLAGc7cec14af [2021-11-07 01:25:42,687 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:42,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:25:42,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/5310953c7/b112ce0975fe44d6bb9a0ffaf977313f/FLAGc7cec14af [2021-11-07 01:25:43,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/data/5310953c7/b112ce0975fe44d6bb9a0ffaf977313f [2021-11-07 01:25:43,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:43,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:43,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:43,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:43,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:43,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:43" (1/1) ... [2021-11-07 01:25:43,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a459477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:43, skipping insertion in model container [2021-11-07 01:25:43,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:43" (1/1) ... [2021-11-07 01:25:43,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:43,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:45,123 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_55f0d5c1-4970-4404-8031-d4c23456f6da/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-07 01:25:45,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:45,200 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:25:45,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:45,691 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_55f0d5c1-4970-4404-8031-d4c23456f6da/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-07 01:25:45,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:45,732 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:25:46,141 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_55f0d5c1-4970-4404-8031-d4c23456f6da/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[238462,238475] [2021-11-07 01:25:46,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:46,333 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:25:46,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46 WrapperNode [2021-11-07 01:25:46,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:46,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:46,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:25:46,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:25:46,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:46,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:48,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:48,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:25:48,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:25:48,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:25:48,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:48,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:49,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:49,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:50,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:50,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:50,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:51,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:25:51,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:25:51,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:25:51,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:25:51,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (1/1) ... [2021-11-07 01:25:51,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:51,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:51,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:25:51,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:25:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:25:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:25:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:25:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:25:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:25:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:25:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-07 01:25:51,345 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-07 01:25:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 01:25:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 01:25:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-07 01:25:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-07 01:25:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-07 01:25:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-07 01:25:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-07 01:25:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-07 01:25:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:25:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-07 01:25:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-07 01:25:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:25:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-07 01:25:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-07 01:25:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-07 01:25:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-07 01:25:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-07 01:25:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-07 01:25:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:25:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:25:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:25:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:25:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:25:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:25:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:25:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:25:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:25:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:25:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-07 01:25:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-07 01:25:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-07 01:25:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-07 01:25:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-07 01:25:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-07 01:25:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-07 01:25:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-07 01:25:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-07 01:25:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-07 01:25:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:25:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:25:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:25:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:25:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-07 01:25:51,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-07 01:25:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:25:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:25:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:25:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 01:25:51,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 01:25:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:25:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:25:51,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:25:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:25:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-07 01:25:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-07 01:25:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-07 01:25:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-07 01:25:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-07 01:25:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-07 01:25:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-07 01:25:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:25:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 01:25:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:25:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:28,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:29:28,860 INFO L299 CfgBuilder]: Removed 12774 assume(true) statements. [2021-11-07 01:29:28,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:28 BoogieIcfgContainer [2021-11-07 01:29:28,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:29:28,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:29:28,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:29:28,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:29:28,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:43" (1/3) ... [2021-11-07 01:29:28,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55553a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:28, skipping insertion in model container [2021-11-07 01:29:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:46" (2/3) ... [2021-11-07 01:29:28,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55553a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:28, skipping insertion in model container [2021-11-07 01:29:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:28" (3/3) ... [2021-11-07 01:29:28,879 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_2a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:29:28,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:29:28,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:29:28,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:29:28,974 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 01:29:28,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:29:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 9787 states, 9721 states have (on average 1.4642526489044336) internal successors, (14234), 9731 states have internal predecessors, (14234), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 01:29:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:29:29,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:29,155 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, 1] [2021-11-07 01:29:29,155 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2077480453, now seen corresponding path program 1 times [2021-11-07 01:29:29,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:29,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278410572] [2021-11-07 01:29:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:29,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:29,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:29,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:29,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:29:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:30,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:29:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:31,170 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 01:29:31,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:31,575 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 01:29:31,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:31,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278410572] [2021-11-07 01:29:31,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278410572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:31,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:31,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:29:31,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297032051] [2021-11-07 01:29:31,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:29:31,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:29:31,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:29:31,629 INFO L87 Difference]: Start difference. First operand has 9787 states, 9721 states have (on average 1.4642526489044336) internal successors, (14234), 9731 states have internal predecessors, (14234), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:32,049 INFO L93 Difference]: Finished difference Result 19570 states and 28655 transitions. [2021-11-07 01:29:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:29:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:29:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:32,154 INFO L225 Difference]: With dead ends: 19570 [2021-11-07 01:29:32,154 INFO L226 Difference]: Without dead ends: 9774 [2021-11-07 01:29:32,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 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 01:29:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2021-11-07 01:29:32,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 9774. [2021-11-07 01:29:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9774 states, 9709 states have (on average 1.4614275414563807) internal successors, (14189), 9718 states have internal predecessors, (14189), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 01:29:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 14269 transitions. [2021-11-07 01:29:32,802 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 14269 transitions. Word has length 47 [2021-11-07 01:29:32,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:32,803 INFO L470 AbstractCegarLoop]: Abstraction has 9774 states and 14269 transitions. [2021-11-07 01:29:32,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 14269 transitions. [2021-11-07 01:29:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:29:32,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:32,809 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, 1] [2021-11-07 01:29:32,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:33,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:33,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1463321859, now seen corresponding path program 1 times [2021-11-07 01:29:33,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:33,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432800005] [2021-11-07 01:29:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:33,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:33,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:33,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:29:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:34,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:34,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:34,951 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 01:29:34,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:35,331 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 01:29:35,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:35,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432800005] [2021-11-07 01:29:35,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432800005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:35,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:35,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:29:35,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833378082] [2021-11-07 01:29:35,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:35,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:35,335 INFO L87 Difference]: Start difference. First operand 9774 states and 14269 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:36,013 INFO L93 Difference]: Finished difference Result 19532 states and 28525 transitions. [2021-11-07 01:29:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:29:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:36,078 INFO L225 Difference]: With dead ends: 19532 [2021-11-07 01:29:36,078 INFO L226 Difference]: Without dead ends: 9778 [2021-11-07 01:29:36,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9778 states. [2021-11-07 01:29:36,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9778 to 9778. [2021-11-07 01:29:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9778 states, 9713 states have (on average 1.4612375167301555) internal successors, (14193), 9722 states have internal predecessors, (14193), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 01:29:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9778 states to 9778 states and 14273 transitions. [2021-11-07 01:29:36,434 INFO L78 Accepts]: Start accepts. Automaton has 9778 states and 14273 transitions. Word has length 47 [2021-11-07 01:29:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:36,435 INFO L470 AbstractCegarLoop]: Abstraction has 9778 states and 14273 transitions. [2021-11-07 01:29:36,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9778 states and 14273 transitions. [2021-11-07 01:29:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:29:36,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:36,441 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:36,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:36,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:36,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 508661949, now seen corresponding path program 1 times [2021-11-07 01:29:36,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:36,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288846295] [2021-11-07 01:29:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:36,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:36,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:36,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:36,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:29:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:29:38,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:38,921 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 01:29:38,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:39,917 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 01:29:39,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:39,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288846295] [2021-11-07 01:29:39,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288846295] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:39,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322298554] [2021-11-07 01:29:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:39,919 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:39,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:39,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:39,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:29:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:41,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:29:41,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:43,129 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 01:29:43,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:44,144 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 01:29:44,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1322298554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:44,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:44,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:29:44,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928230732] [2021-11-07 01:29:44,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:44,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:44,149 INFO L87 Difference]: Start difference. First operand 9778 states and 14273 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:10,807 INFO L93 Difference]: Finished difference Result 29268 states and 42902 transitions. [2021-11-07 01:30:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:10,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:30:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:10,947 INFO L225 Difference]: With dead ends: 29268 [2021-11-07 01:30:10,947 INFO L226 Difference]: Without dead ends: 19522 [2021-11-07 01:30:10,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:30:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19522 states. [2021-11-07 01:30:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19522 to 19510. [2021-11-07 01:30:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19510 states, 19385 states have (on average 1.428217694093371) internal successors, (27686), 19399 states have internal predecessors, (27686), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (152), 74 states have call predecessors, (152), 80 states have call successors, (152) [2021-11-07 01:30:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19510 states to 19510 states and 27918 transitions. [2021-11-07 01:30:11,795 INFO L78 Accepts]: Start accepts. Automaton has 19510 states and 27918 transitions. Word has length 51 [2021-11-07 01:30:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:11,796 INFO L470 AbstractCegarLoop]: Abstraction has 19510 states and 27918 transitions. [2021-11-07 01:30:11,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 19510 states and 27918 transitions. [2021-11-07 01:30:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:30:11,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:11,806 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:11,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:12,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:12,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:12,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:30:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1411305389, now seen corresponding path program 1 times [2021-11-07 01:30:12,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:12,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268292369] [2021-11-07 01:30:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:12,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:12,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:12,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:30:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:13,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:30:13,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:14,369 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 01:30:14,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:15,196 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 01:30:15,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:15,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268292369] [2021-11-07 01:30:15,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268292369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:15,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2012009507] [2021-11-07 01:30:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:15,197 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:15,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:15,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:30:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:16,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:30:16,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:18,389 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 01:30:18,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:19,428 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 01:30:19,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2012009507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:19,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:19,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:30:19,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394295081] [2021-11-07 01:30:19,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:30:19,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:30:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:30:19,431 INFO L87 Difference]: Start difference. First operand 19510 states and 27918 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 01:35:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:13,675 INFO L93 Difference]: Finished difference Result 76623 states and 109554 transitions. [2021-11-07 01:35:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:13,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 52 [2021-11-07 01:35:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:13,882 INFO L225 Difference]: With dead ends: 76623 [2021-11-07 01:35:13,882 INFO L226 Difference]: Without dead ends: 57145 [2021-11-07 01:35:14,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:35:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57145 states. [2021-11-07 01:35:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57145 to 47069. [2021-11-07 01:35:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47069 states, 46704 states have (on average 1.3979530661185338) internal successors, (65290), 46738 states have internal predecessors, (65290), 240 states have call successors, (240), 120 states have call predecessors, (240), 120 states have return successors, (608), 222 states have call predecessors, (608), 240 states have call successors, (608) [2021-11-07 01:35:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47069 states to 47069 states and 66138 transitions. [2021-11-07 01:35:16,126 INFO L78 Accepts]: Start accepts. Automaton has 47069 states and 66138 transitions. Word has length 52 [2021-11-07 01:35:16,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:16,127 INFO L470 AbstractCegarLoop]: Abstraction has 47069 states and 66138 transitions. [2021-11-07 01:35:16,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 01:35:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 47069 states and 66138 transitions. [2021-11-07 01:35:16,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:35:16,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:16,130 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:16,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:16,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:16,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:16,547 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash -800750713, now seen corresponding path program 1 times [2021-11-07 01:35:16,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:16,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752679656] [2021-11-07 01:35:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:16,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:16,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:35:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:18,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:18,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:18,629 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 01:35:18,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:19,371 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 01:35:19,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:19,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752679656] [2021-11-07 01:35:19,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752679656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:19,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [363346015] [2021-11-07 01:35:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:19,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:19,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:19,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:19,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:35:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:20,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:20,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:21,598 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 01:35:21,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:22,349 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 01:35:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [363346015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:22,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:22,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:22,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404465993] [2021-11-07 01:35:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:22,351 INFO L87 Difference]: Start difference. First operand 47069 states and 66138 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 01:35:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:32,711 INFO L93 Difference]: Finished difference Result 57137 states and 79902 transitions. [2021-11-07 01:35:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 53 [2021-11-07 01:35:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:32,908 INFO L225 Difference]: With dead ends: 57137 [2021-11-07 01:35:32,909 INFO L226 Difference]: Without dead ends: 57135 [2021-11-07 01:35:32,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 201 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 01:35:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57135 states. [2021-11-07 01:35:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57135 to 57133. [2021-11-07 01:35:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57133 states, 56768 states have (on average 1.392527480270575) internal successors, (79051), 56802 states have internal predecessors, (79051), 240 states have call successors, (240), 120 states have call predecessors, (240), 120 states have return successors, (608), 222 states have call predecessors, (608), 240 states have call successors, (608) [2021-11-07 01:35:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57133 states to 57133 states and 79899 transitions. [2021-11-07 01:35:35,098 INFO L78 Accepts]: Start accepts. Automaton has 57133 states and 79899 transitions. Word has length 53 [2021-11-07 01:35:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:35,100 INFO L470 AbstractCegarLoop]: Abstraction has 57133 states and 79899 transitions. [2021-11-07 01:35:35,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 01:35:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 57133 states and 79899 transitions. [2021-11-07 01:35:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:35:35,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:35,106 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:35,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:35,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:35,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:35,566 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 946575069, now seen corresponding path program 1 times [2021-11-07 01:35:35,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:35,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598319674] [2021-11-07 01:35:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:35,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:35,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:35,571 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:35,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:35:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:37,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:37,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:37,840 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 01:35:37,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:38,645 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 01:35:38,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:38,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598319674] [2021-11-07 01:35:38,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598319674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:38,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [252187048] [2021-11-07 01:35:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:38,648 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:38,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:38,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:35:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:40,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:40,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:41,077 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 01:35:41,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:41,833 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 01:35:41,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [252187048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:41,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:41,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:41,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817535692] [2021-11-07 01:35:41,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:41,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:41,835 INFO L87 Difference]: Start difference. First operand 57133 states and 79899 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 01:35:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:43,177 INFO L93 Difference]: Finished difference Result 57133 states and 79899 transitions. [2021-11-07 01:35:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:43,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 54 [2021-11-07 01:35:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:43,352 INFO L225 Difference]: With dead ends: 57133 [2021-11-07 01:35:43,352 INFO L226 Difference]: Without dead ends: 57131 [2021-11-07 01:35:43,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:43,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57131 states. [2021-11-07 01:35:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57131 to 57131. [2021-11-07 01:35:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57131 states, 56767 states have (on average 1.3925167791146265) internal successors, (79049), 56800 states have internal predecessors, (79049), 240 states have call successors, (240), 120 states have call predecessors, (240), 120 states have return successors, (608), 222 states have call predecessors, (608), 240 states have call successors, (608) [2021-11-07 01:35:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57131 states to 57131 states and 79897 transitions. [2021-11-07 01:35:45,954 INFO L78 Accepts]: Start accepts. Automaton has 57131 states and 79897 transitions. Word has length 54 [2021-11-07 01:35:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:45,955 INFO L470 AbstractCegarLoop]: Abstraction has 57131 states and 79897 transitions. [2021-11-07 01:35:45,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 01:35:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 57131 states and 79897 transitions. [2021-11-07 01:35:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:35:45,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:45,960 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:45,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:46,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:46,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:46,385 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -720900527, now seen corresponding path program 1 times [2021-11-07 01:35:46,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:46,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566354554] [2021-11-07 01:35:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:46,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:46,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:46,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:35:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:48,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:48,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:48,576 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 01:35:48,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:49,327 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 01:35:49,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:49,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566354554] [2021-11-07 01:35:49,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566354554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:49,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1364390092] [2021-11-07 01:35:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:49,328 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:49,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:49,328 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:49,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:35:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:50,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:50,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:51,700 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 01:35:51,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:52,622 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 01:35:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1364390092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:52,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:52,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:52,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900171350] [2021-11-07 01:35:52,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:52,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:52,624 INFO L87 Difference]: Start difference. First operand 57131 states and 79897 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 01:35:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:54,341 INFO L93 Difference]: Finished difference Result 57131 states and 79897 transitions. [2021-11-07 01:35:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 55 [2021-11-07 01:35:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:54,469 INFO L225 Difference]: With dead ends: 57131 [2021-11-07 01:35:54,469 INFO L226 Difference]: Without dead ends: 52094 [2021-11-07 01:35:54,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 209 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 01:35:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52094 states. [2021-11-07 01:35:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52094 to 52094. [2021-11-07 01:35:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52094 states, 51731 states have (on average 1.3875045910575863) internal successors, (71777), 51763 states have internal predecessors, (71777), 240 states have call successors, (240), 120 states have call predecessors, (240), 120 states have return successors, (608), 222 states have call predecessors, (608), 240 states have call successors, (608) [2021-11-07 01:35:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52094 states to 52094 states and 72625 transitions. [2021-11-07 01:35:56,444 INFO L78 Accepts]: Start accepts. Automaton has 52094 states and 72625 transitions. Word has length 55 [2021-11-07 01:35:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:56,444 INFO L470 AbstractCegarLoop]: Abstraction has 52094 states and 72625 transitions. [2021-11-07 01:35:56,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 01:35:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 52094 states and 72625 transitions. [2021-11-07 01:35:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:35:56,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:56,466 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:56,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 01:35:56,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:56,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:56,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash -319588097, now seen corresponding path program 1 times [2021-11-07 01:35:56,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:56,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707691539] [2021-11-07 01:35:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:56,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:56,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:35:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:58,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:58,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:35:59,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:36:00,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:00,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707691539] [2021-11-07 01:36:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707691539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:00,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789612854] [2021-11-07 01:36:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:00,269 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:00,270 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:00,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:36:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:02,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:36:02,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:36:02,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:36:03,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789612854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:03,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:03,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:36:03,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81497234] [2021-11-07 01:36:03,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:36:03,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:36:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:36:03,252 INFO L87 Difference]: Start difference. First operand 52094 states and 72625 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 01:36:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:06,173 INFO L93 Difference]: Finished difference Result 124155 states and 173606 transitions. [2021-11-07 01:36:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:36:06,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 83 [2021-11-07 01:36:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:06,321 INFO L225 Difference]: With dead ends: 124155 [2021-11-07 01:36:06,321 INFO L226 Difference]: Without dead ends: 72093 [2021-11-07 01:36:06,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 321 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 01:36:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72093 states. [2021-11-07 01:36:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72093 to 72068. [2021-11-07 01:36:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72068 states, 71345 states have (on average 1.391660242483706) internal successors, (99288), 71407 states have internal predecessors, (99288), 480 states have call successors, (480), 240 states have call predecessors, (480), 240 states have return successors, (1216), 444 states have call predecessors, (1216), 480 states have call successors, (1216) [2021-11-07 01:36:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72068 states to 72068 states and 100984 transitions. [2021-11-07 01:36:09,205 INFO L78 Accepts]: Start accepts. Automaton has 72068 states and 100984 transitions. Word has length 83 [2021-11-07 01:36:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:09,205 INFO L470 AbstractCegarLoop]: Abstraction has 72068 states and 100984 transitions. [2021-11-07 01:36:09,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 01:36:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 72068 states and 100984 transitions. [2021-11-07 01:36:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 01:36:09,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:09,243 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:09,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:09,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:09,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:09,664 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash 725377367, now seen corresponding path program 1 times [2021-11-07 01:36:09,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:09,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228995288] [2021-11-07 01:36:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:09,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:09,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:09,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:09,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:36:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:11,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:36:11,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:36:12,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:36:13,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:13,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228995288] [2021-11-07 01:36:13,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228995288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:13,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [92921422] [2021-11-07 01:36:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:13,583 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:13,584 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:13,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:36:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:15,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:36:15,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:36:15,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:36:16,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [92921422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:16,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:16,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:36:16,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542977688] [2021-11-07 01:36:16,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:36:16,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:36:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:36:16,420 INFO L87 Difference]: Start difference. First operand 72068 states and 100984 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:21,549 INFO L93 Difference]: Finished difference Result 144130 states and 201970 transitions. [2021-11-07 01:36:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:36:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 01:36:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:21,752 INFO L225 Difference]: With dead ends: 144130 [2021-11-07 01:36:21,752 INFO L226 Difference]: Without dead ends: 72092 [2021-11-07 01:36:21,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 425 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 01:36:21,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72092 states. [2021-11-07 01:36:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72092 to 72073. [2021-11-07 01:36:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72073 states, 71350 states have (on average 1.391604765241766) internal successors, (99291), 71412 states have internal predecessors, (99291), 480 states have call successors, (480), 240 states have call predecessors, (480), 240 states have return successors, (1216), 444 states have call predecessors, (1216), 480 states have call successors, (1216) [2021-11-07 01:36:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72073 states to 72073 states and 100987 transitions. [2021-11-07 01:36:24,781 INFO L78 Accepts]: Start accepts. Automaton has 72073 states and 100987 transitions. Word has length 109 [2021-11-07 01:36:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:24,781 INFO L470 AbstractCegarLoop]: Abstraction has 72073 states and 100987 transitions. [2021-11-07 01:36:24,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 72073 states and 100987 transitions. [2021-11-07 01:36:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:36:24,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:24,813 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:24,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:25,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:25,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:25,232 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:36:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1669460944, now seen corresponding path program 1 times [2021-11-07 01:36:25,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:25,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503589881] [2021-11-07 01:36:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:25,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:25,236 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:25,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:36:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:27,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:36:27,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:36:28,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:36:29,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:29,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503589881] [2021-11-07 01:36:29,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503589881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:29,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1714895495] [2021-11-07 01:36:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:29,447 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:29,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:29,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0d5c1-4970-4404-8031-d4c23456f6da/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:36:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:31,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:36:31,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:36:32,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:36:33,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1714895495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:33,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:33,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:36:33,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670533223] [2021-11-07 01:36:33,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:36:33,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:36:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:36:33,316 INFO L87 Difference]: Start difference. First operand 72073 states and 100987 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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)