./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/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_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/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_5b76357e-8f0a-4ee3-ae32-46038c03e388/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 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:22:01,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:22:01,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:22:01,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:22:01,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:22:01,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:22:01,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:22:01,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:22:01,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:22:01,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:22:01,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:22:01,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:22:01,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:22:01,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:22:01,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:22:01,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:22:01,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:22:01,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:22:01,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:22:01,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:22:01,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:22:01,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:22:01,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:22:01,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:22:01,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:22:01,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:22:01,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:22:01,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:22:01,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:22:01,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:22:01,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:22:01,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:22:01,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:22:01,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:22:01,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:22:01,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:22:01,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:22:01,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:22:01,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:22:01,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:22:01,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:22:01,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:22:01,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:22:01,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:22:01,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:22:01,172 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:22:01,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:22:01,172 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:22:01,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:22:01,173 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:22:01,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:22:01,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:22:01,180 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:22:01,180 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:22:01,180 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:22:01,180 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:22:01,181 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:22:01,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:22:01,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:22:01,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:22:01,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:22:01,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:22:01,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:22:01,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:22:01,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:22:01,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:22:01,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:22:01,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:22:01,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:22:01,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:01,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:22:01,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:22:01,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:22:01,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:22:01,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:22:01,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:22:01,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:22:01,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:22:01,186 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff [2021-11-07 02:22:01,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:22:01,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:22:01,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:22:01,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:22:01,445 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:22:01,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 02:22:01,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/7ce290ede/a6684954c19e44599b9a44f5b33ebdcd/FLAG1fa3fcee7 [2021-11-07 02:22:02,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:22:02,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 02:22:02,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/7ce290ede/a6684954c19e44599b9a44f5b33ebdcd/FLAG1fa3fcee7 [2021-11-07 02:22:03,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/7ce290ede/a6684954c19e44599b9a44f5b33ebdcd [2021-11-07 02:22:03,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:22:03,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:22:03,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:03,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:22:03,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:22:03,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:03" (1/1) ... [2021-11-07 02:22:03,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eef36d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:03, skipping insertion in model container [2021-11-07 02:22:03,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:03" (1/1) ... [2021-11-07 02:22:03,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:22:03,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:22:04,343 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 02:22:04,908 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 02:22:04,919 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 02:22:04,964 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 02:22:04,974 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 02:22:05,573 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 02:22:05,581 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 02:22:05,582 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 02:22:05,597 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 02:22:05,612 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 02:22:05,613 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 02:22:05,626 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 02:22:05,646 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 02:22:05,648 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 02:22:05,652 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 02:22:05,763 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 02:22:05,766 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 02:22:05,769 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 02:22:05,772 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 02:22:05,863 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 02:22:05,864 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 02:22:05,868 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 02:22:05,875 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 02:22:05,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:22:05,892 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 02:22:05,896 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 02:22:05,969 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 02:22:05,970 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 02:22:05,998 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 02:22:06,000 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 02:22:06,001 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 02:22:06,001 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 02:22:06,070 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2021-11-07 02:22:06,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:06,216 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 02:22:06,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4dfb9695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:06, skipping insertion in model container [2021-11-07 02:22:06,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:06,217 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:22:06,220 INFO L168 Benchmark]: Toolchain (without parser) took 3182.71 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 61.6 MB in the beginning and 65.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:22:06,220 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 100.7 MB. Free memory is still 71.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:22:06,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3180.24 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 61.6 MB in the beginning and 65.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:22:06,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 100.7 MB. Free memory is still 71.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3180.24 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 61.6 MB in the beginning and 65.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6145]: 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/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_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/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_5b76357e-8f0a-4ee3-ae32-46038c03e388/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 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:22:08,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:22:08,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:22:08,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:22:08,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:22:08,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:22:08,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:22:08,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:22:08,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:22:08,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:22:08,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:22:08,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:22:08,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:22:08,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:22:08,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:22:08,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:22:08,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:22:08,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:22:08,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:22:08,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:22:08,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:22:08,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:22:08,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:22:08,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:22:08,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:22:08,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:22:08,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:22:08,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:22:08,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:22:08,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:22:08,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:22:08,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:22:08,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:22:08,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:22:08,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:22:08,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:22:08,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:22:08,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:22:08,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:22:08,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:22:08,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:22:08,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:22:08,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:22:08,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:22:08,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:22:08,631 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:22:08,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:22:08,631 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:22:08,631 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:22:08,632 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:22:08,632 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:22:08,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:22:08,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:22:08,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:22:08,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:22:08,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:22:08,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:22:08,636 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:22:08,636 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:22:08,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:22:08,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:22:08,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:22:08,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:22:08,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:22:08,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:22:08,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:08,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:22:08,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:22:08,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:22:08,638 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:22:08,639 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:08,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:22:08,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:22:08,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:22:08,639 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff [2021-11-07 02:22:09,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:22:09,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:22:09,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:22:09,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:22:09,102 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:22:09,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 02:22:09,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/d4da97e40/781958d1a3d245b8945dcece66dba83a/FLAGea463774b [2021-11-07 02:22:10,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:22:10,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 02:22:10,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/d4da97e40/781958d1a3d245b8945dcece66dba83a/FLAGea463774b [2021-11-07 02:22:10,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/data/d4da97e40/781958d1a3d245b8945dcece66dba83a [2021-11-07 02:22:10,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:22:10,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:22:10,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:10,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:22:10,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:22:10,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:10" (1/1) ... [2021-11-07 02:22:10,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221614cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:10, skipping insertion in model container [2021-11-07 02:22:10,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:22:10" (1/1) ... [2021-11-07 02:22:10,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:22:10,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:22:13,469 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2021-11-07 02:22:13,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:13,629 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:22:13,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:22:14,249 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2021-11-07 02:22:14,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:14,296 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:22:14,762 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_5b76357e-8f0a-4ee3-ae32-46038c03e388/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2021-11-07 02:22:14,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:22:14,974 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:22:14,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14 WrapperNode [2021-11-07 02:22:14,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:22:14,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:22:14,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:22:14,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:22:14,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:15,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:16,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:22:16,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:22:16,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:22:16,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:22:16,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:16,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:16,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:16,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:17,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:17,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:17,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:17,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:22:17,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:22:17,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:22:17,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:22:17,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (1/1) ... [2021-11-07 02:22:17,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:22:17,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:17,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:22:17,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:22:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:22:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-07 02:22:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-07 02:22:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-07 02:22:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-07 02:22:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-07 02:22:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-07 02:22:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-07 02:22:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-11-07 02:22:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:22:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:22:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:22:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:22:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:22:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:22:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-07 02:22:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-07 02:22:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-07 02:22:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-07 02:22:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-11-07 02:22:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-11-07 02:22:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-11-07 02:22:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-11-07 02:22:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:22:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:22:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:22:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:22:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:22:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:22:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-07 02:22:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-07 02:22:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:22:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:22:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:22:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:22:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:22:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:22:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:22:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:22:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-11-07 02:22:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-11-07 02:22:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-07 02:22:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-07 02:22:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:22:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:22:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:26:38,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:26:38,453 INFO L299 CfgBuilder]: Removed 7098 assume(true) statements. [2021-11-07 02:26:38,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:26:38 BoogieIcfgContainer [2021-11-07 02:26:38,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:26:38,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:26:38,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:26:38,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:26:38,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:22:10" (1/3) ... [2021-11-07 02:26:38,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330fe693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:26:38, skipping insertion in model container [2021-11-07 02:26:38,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:22:14" (2/3) ... [2021-11-07 02:26:38,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330fe693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:26:38, skipping insertion in model container [2021-11-07 02:26:38,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:26:38" (3/3) ... [2021-11-07 02:26:38,469 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 02:26:38,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:26:38,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2021-11-07 02:26:38,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:26:38,559 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 02:26:38,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2021-11-07 02:26:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 6927 states, 6825 states have (on average 1.4372161172161173) internal successors, (9809), 6893 states have internal predecessors, (9809), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-07 02:26:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 02:26:38,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:38,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:38,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:26:38,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:38,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1683502137, now seen corresponding path program 1 times [2021-11-07 02:26:38,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:38,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305063178] [2021-11-07 02:26:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:38,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:38,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:38,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:26:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:42,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:26:42,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:42,463 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 02:26:42,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:42,719 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 02:26:42,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:42,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305063178] [2021-11-07 02:26:42,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305063178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:42,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:42,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:26:42,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672131094] [2021-11-07 02:26:42,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:26:42,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:26:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:26:42,763 INFO L87 Difference]: Start difference. First operand has 6927 states, 6825 states have (on average 1.4372161172161173) internal successors, (9809), 6893 states have internal predecessors, (9809), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 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 02:26:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:43,077 INFO L93 Difference]: Finished difference Result 13850 states and 19833 transitions. [2021-11-07 02:26:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:26:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2021-11-07 02:26:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:43,142 INFO L225 Difference]: With dead ends: 13850 [2021-11-07 02:26:43,142 INFO L226 Difference]: Without dead ends: 6882 [2021-11-07 02:26:43,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 02:26:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6882 states. [2021-11-07 02:26:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6882 to 6882. [2021-11-07 02:26:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6882 states, 6781 states have (on average 1.3810647397139064) internal successors, (9365), 6848 states have internal predecessors, (9365), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-07 02:26:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6882 states to 6882 states and 9453 transitions. [2021-11-07 02:26:43,704 INFO L78 Accepts]: Start accepts. Automaton has 6882 states and 9453 transitions. Word has length 66 [2021-11-07 02:26:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:43,704 INFO L470 AbstractCegarLoop]: Abstraction has 6882 states and 9453 transitions. [2021-11-07 02:26:43,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 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 02:26:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6882 states and 9453 transitions. [2021-11-07 02:26:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 02:26:43,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:43,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:43,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:26:43,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:43,926 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:26:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1540117577, now seen corresponding path program 1 times [2021-11-07 02:26:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:43,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761276095] [2021-11-07 02:26:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:43,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:43,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:43,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:26:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:47,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:26:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:47,557 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 02:26:47,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:47,878 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 02:26:47,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:47,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761276095] [2021-11-07 02:26:47,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761276095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:47,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:47,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:26:47,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869254188] [2021-11-07 02:26:47,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:26:47,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:26:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:26:47,882 INFO L87 Difference]: Start difference. First operand 6882 states and 9453 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:48,956 INFO L93 Difference]: Finished difference Result 13744 states and 18901 transitions. [2021-11-07 02:26:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:26:48,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 02:26:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:49,010 INFO L225 Difference]: With dead ends: 13744 [2021-11-07 02:26:49,010 INFO L226 Difference]: Without dead ends: 6898 [2021-11-07 02:26:49,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:26:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6898 states. [2021-11-07 02:26:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6898 to 6898. [2021-11-07 02:26:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6898 states, 6797 states have (on average 1.380167721053406) internal successors, (9381), 6864 states have internal predecessors, (9381), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-07 02:26:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 9469 transitions. [2021-11-07 02:26:49,298 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 9469 transitions. Word has length 66 [2021-11-07 02:26:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:49,298 INFO L470 AbstractCegarLoop]: Abstraction has 6898 states and 9469 transitions. [2021-11-07 02:26:49,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 9469 transitions. [2021-11-07 02:26:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 02:26:49,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:49,310 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:49,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 02:26:49,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:49,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:26:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1731466693, now seen corresponding path program 1 times [2021-11-07 02:26:49,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:49,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618080181] [2021-11-07 02:26:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:49,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:49,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:49,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:49,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:26:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:53,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:26:53,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:26:53,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:26:54,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:54,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618080181] [2021-11-07 02:26:54,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618080181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:26:54,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [51598010] [2021-11-07 02:26:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:54,208 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:26:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:26:54,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:26:54,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:26:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:56,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:56,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:26:56,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:26:56,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [51598010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:56,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:26:56,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:26:56,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436038480] [2021-11-07 02:26:56,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:56,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:26:56,530 INFO L87 Difference]: Start difference. First operand 6898 states and 9469 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 02:26:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:57,622 INFO L93 Difference]: Finished difference Result 19377 states and 26521 transitions. [2021-11-07 02:26:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 02:26:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:57,723 INFO L225 Difference]: With dead ends: 19377 [2021-11-07 02:26:57,723 INFO L226 Difference]: Without dead ends: 12545 [2021-11-07 02:26:57,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:26:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-11-07 02:26:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 12461. [2021-11-07 02:26:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12312 states have (on average 1.3746751137102013) internal successors, (16925), 12399 states have internal predecessors, (16925), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-07 02:26:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 17081 transitions. [2021-11-07 02:26:58,220 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 17081 transitions. Word has length 76 [2021-11-07 02:26:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:58,224 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 17081 transitions. [2021-11-07 02:26:58,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 02:26:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 17081 transitions. [2021-11-07 02:26:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 02:26:58,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:58,230 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:58,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:58,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:58,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:26:58,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:26:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1707369828, now seen corresponding path program 1 times [2021-11-07 02:26:58,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:58,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642185974] [2021-11-07 02:26:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:58,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:58,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:58,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:58,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:27:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:02,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:27:02,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:27:02,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 02:27:03,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:03,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642185974] [2021-11-07 02:27:03,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642185974] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:03,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1522331011] [2021-11-07 02:27:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:03,197 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:27:03,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:27:03,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:27:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:05,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:27:05,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:05,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:05,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1522331011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:05,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:27:05,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:27:05,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21539643] [2021-11-07 02:27:05,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:27:05,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:27:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:27:05,684 INFO L87 Difference]: Start difference. First operand 12461 states and 17081 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:06,838 INFO L93 Difference]: Finished difference Result 35217 states and 48489 transitions. [2021-11-07 02:27:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:27:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 02:27:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:06,958 INFO L225 Difference]: With dead ends: 35217 [2021-11-07 02:27:06,958 INFO L226 Difference]: Without dead ends: 22822 [2021-11-07 02:27:06,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:27:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22822 states. [2021-11-07 02:27:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22822 to 17532. [2021-11-07 02:27:07,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17532 states, 17329 states have (on average 1.3846153846153846) internal successors, (23994), 17436 states have internal predecessors, (23994), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (162), 107 states have call predecessors, (162), 118 states have call successors, (162) [2021-11-07 02:27:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17532 states to 17532 states and 24274 transitions. [2021-11-07 02:27:07,718 INFO L78 Accepts]: Start accepts. Automaton has 17532 states and 24274 transitions. Word has length 89 [2021-11-07 02:27:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:07,719 INFO L470 AbstractCegarLoop]: Abstraction has 17532 states and 24274 transitions. [2021-11-07 02:27:07,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 17532 states and 24274 transitions. [2021-11-07 02:27:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:27:07,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:07,722 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:27:07,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:07,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:08,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:08,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:27:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:08,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1524969227, now seen corresponding path program 1 times [2021-11-07 02:27:08,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:08,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177675240] [2021-11-07 02:27:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:08,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:08,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:08,144 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:08,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:27:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:12,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:27:12,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:12,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:13,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:13,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177675240] [2021-11-07 02:27:13,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177675240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:13,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2078507991] [2021-11-07 02:27:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:13,314 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:27:13,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:27:13,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:27:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:15,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:27:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:15,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:15,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2078507991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:15,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:27:15,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:27:15,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834932704] [2021-11-07 02:27:15,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:27:15,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:27:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:27:15,837 INFO L87 Difference]: Start difference. First operand 17532 states and 24274 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:16,598 INFO L93 Difference]: Finished difference Result 34998 states and 48475 transitions. [2021-11-07 02:27:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:27:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 02:27:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:16,660 INFO L225 Difference]: With dead ends: 34998 [2021-11-07 02:27:16,661 INFO L226 Difference]: Without dead ends: 17532 [2021-11-07 02:27:16,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:27:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17532 states. [2021-11-07 02:27:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17532 to 17532. [2021-11-07 02:27:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17532 states, 17329 states have (on average 1.384384557677881) internal successors, (23990), 17436 states have internal predecessors, (23990), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (162), 107 states have call predecessors, (162), 118 states have call successors, (162) [2021-11-07 02:27:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17532 states to 17532 states and 24270 transitions. [2021-11-07 02:27:17,360 INFO L78 Accepts]: Start accepts. Automaton has 17532 states and 24270 transitions. Word has length 103 [2021-11-07 02:27:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:17,361 INFO L470 AbstractCegarLoop]: Abstraction has 17532 states and 24270 transitions. [2021-11-07 02:27:17,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 17532 states and 24270 transitions. [2021-11-07 02:27:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:27:17,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:17,364 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:27:17,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:17,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:17,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:17,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:27:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash 289798094, now seen corresponding path program 1 times [2021-11-07 02:27:17,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:17,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071077670] [2021-11-07 02:27:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:17,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:17,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:17,798 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:17,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:27:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:21,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:27:21,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:22,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:23,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:23,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071077670] [2021-11-07 02:27:23,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071077670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:23,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [638350915] [2021-11-07 02:27:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:23,294 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:27:23,310 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:27:23,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:27:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:25,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:27:25,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 02:27:26,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 02:27:26,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [638350915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:26,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:27:26,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:27:26,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130144098] [2021-11-07 02:27:26,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:27:26,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:27:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:27:26,888 INFO L87 Difference]: Start difference. First operand 17532 states and 24270 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 02:27:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:28,564 INFO L93 Difference]: Finished difference Result 25749 states and 35733 transitions. [2021-11-07 02:27:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:27:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 02:27:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:28,657 INFO L225 Difference]: With dead ends: 25749 [2021-11-07 02:27:28,657 INFO L226 Difference]: Without dead ends: 25689 [2021-11-07 02:27:28,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:27:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25689 states. [2021-11-07 02:27:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25689 to 24081. [2021-11-07 02:27:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24081 states, 23803 states have (on average 1.381926647901525) internal successors, (32894), 23922 states have internal predecessors, (32894), 166 states have call successors, (166), 72 states have call predecessors, (166), 72 states have return successors, (298), 164 states have call predecessors, (298), 166 states have call successors, (298) [2021-11-07 02:27:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24081 states to 24081 states and 33358 transitions. [2021-11-07 02:27:29,692 INFO L78 Accepts]: Start accepts. Automaton has 24081 states and 33358 transitions. Word has length 107 [2021-11-07 02:27:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:29,692 INFO L470 AbstractCegarLoop]: Abstraction has 24081 states and 33358 transitions. [2021-11-07 02:27:29,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 02:27:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 24081 states and 33358 transitions. [2021-11-07 02:27:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 02:27:29,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:29,702 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:29,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:29,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:30,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:30,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:27:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -324582370, now seen corresponding path program 1 times [2021-11-07 02:27:30,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:30,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486067175] [2021-11-07 02:27:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:30,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:30,121 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:30,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:27:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:34,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:27:34,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:34,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:35,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:35,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486067175] [2021-11-07 02:27:35,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486067175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:35,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573178819] [2021-11-07 02:27:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:35,596 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:27:35,597 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:27:35,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:27:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:38,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:27:38,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:38,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:39,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573178819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:39,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:27:39,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 02:27:39,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845069070] [2021-11-07 02:27:39,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:27:39,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:27:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:27:39,186 INFO L87 Difference]: Start difference. First operand 24081 states and 33358 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:42,317 INFO L93 Difference]: Finished difference Result 48106 states and 66653 transitions. [2021-11-07 02:27:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:27:42,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 02:27:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:42,388 INFO L225 Difference]: With dead ends: 48106 [2021-11-07 02:27:42,388 INFO L226 Difference]: Without dead ends: 24077 [2021-11-07 02:27:42,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:27:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24077 states. [2021-11-07 02:27:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24077 to 24073. [2021-11-07 02:27:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24073 states, 23795 states have (on average 1.381802899768859) internal successors, (32880), 23914 states have internal predecessors, (32880), 166 states have call successors, (166), 72 states have call predecessors, (166), 72 states have return successors, (298), 164 states have call predecessors, (298), 166 states have call successors, (298) [2021-11-07 02:27:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24073 states to 24073 states and 33344 transitions. [2021-11-07 02:27:43,331 INFO L78 Accepts]: Start accepts. Automaton has 24073 states and 33344 transitions. Word has length 140 [2021-11-07 02:27:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:43,331 INFO L470 AbstractCegarLoop]: Abstraction has 24073 states and 33344 transitions. [2021-11-07 02:27:43,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 24073 states and 33344 transitions. [2021-11-07 02:27:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 02:27:43,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:43,338 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:43,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:43,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:43,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:43,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:27:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1716957086, now seen corresponding path program 1 times [2021-11-07 02:27:43,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:43,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118418442] [2021-11-07 02:27:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:43,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:43,768 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:43,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:27:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:47,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:27:47,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:48,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:27:49,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:49,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118418442] [2021-11-07 02:27:49,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118418442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:49,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1979014936] [2021-11-07 02:27:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:49,300 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:27:49,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:27:49,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:27:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:51,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:27:51,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 02:27:52,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 02:27:53,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1979014936] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:53,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:27:53,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5, 5] total 15 [2021-11-07 02:27:53,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088720587] [2021-11-07 02:27:53,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:27:53,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:27:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:27:53,472 INFO L87 Difference]: Start difference. First operand 24073 states and 33344 transitions. Second operand has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:28:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:28:15,295 INFO L93 Difference]: Finished difference Result 175162 states and 244954 transitions. [2021-11-07 02:28:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:28:15,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-07 02:28:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:28:15,745 INFO L225 Difference]: With dead ends: 175162 [2021-11-07 02:28:15,746 INFO L226 Difference]: Without dead ends: 151155 [2021-11-07 02:28:15,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-11-07 02:28:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151155 states. [2021-11-07 02:28:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151155 to 24085. [2021-11-07 02:28:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24085 states, 23807 states have (on average 1.381610450707775) internal successors, (32892), 23926 states have internal predecessors, (32892), 166 states have call successors, (166), 72 states have call predecessors, (166), 72 states have return successors, (298), 164 states have call predecessors, (298), 166 states have call successors, (298) [2021-11-07 02:28:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24085 states to 24085 states and 33356 transitions. [2021-11-07 02:28:18,516 INFO L78 Accepts]: Start accepts. Automaton has 24085 states and 33356 transitions. Word has length 144 [2021-11-07 02:28:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:28:18,517 INFO L470 AbstractCegarLoop]: Abstraction has 24085 states and 33356 transitions. [2021-11-07 02:28:18,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:28:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 24085 states and 33356 transitions. [2021-11-07 02:28:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 02:28:18,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:28:18,524 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:18,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:28:18,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:28:18,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:28:18,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:28:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:28:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2028015770, now seen corresponding path program 1 times [2021-11-07 02:28:18,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:28:18,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63033126] [2021-11-07 02:28:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:18,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:28:18,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:28:18,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:28:18,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:28:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:28:23,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:28:23,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:28:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:28:24,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:28:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:28:24,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:28:24,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63033126] [2021-11-07 02:28:24,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63033126] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:28:24,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1617178400] [2021-11-07 02:28:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:24,996 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:28:24,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:28:24,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:28:24,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:28:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:28:30,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:28:30,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:28:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:28:31,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:28:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:28:31,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1617178400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:28:31,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761219232] [2021-11-07 02:28:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:31,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:28:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:28:31,902 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:28:31,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 02:28:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:28:34,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:28:34,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:28:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 02:28:36,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:28:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 02:28:37,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761219232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:28:37,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:28:37,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5, 5, 5] total 18 [2021-11-07 02:28:37,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634176314] [2021-11-07 02:28:37,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:28:37,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:28:37,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:28:37,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:28:37,612 INFO L87 Difference]: Start difference. First operand 24085 states and 33356 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:29:10,589 INFO L93 Difference]: Finished difference Result 109270 states and 150724 transitions. [2021-11-07 02:29:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 02:29:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-07 02:29:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:29:10,823 INFO L225 Difference]: With dead ends: 109270 [2021-11-07 02:29:10,824 INFO L226 Difference]: Without dead ends: 85251 [2021-11-07 02:29:10,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 880 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-11-07 02:29:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85251 states. [2021-11-07 02:29:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85251 to 24097. [2021-11-07 02:29:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24097 states, 23819 states have (on average 1.381418195558168) internal successors, (32904), 23938 states have internal predecessors, (32904), 166 states have call successors, (166), 72 states have call predecessors, (166), 72 states have return successors, (298), 164 states have call predecessors, (298), 166 states have call successors, (298) [2021-11-07 02:29:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24097 states to 24097 states and 33368 transitions. [2021-11-07 02:29:13,909 INFO L78 Accepts]: Start accepts. Automaton has 24097 states and 33368 transitions. Word has length 150 [2021-11-07 02:29:13,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:29:13,909 INFO L470 AbstractCegarLoop]: Abstraction has 24097 states and 33368 transitions. [2021-11-07 02:29:13,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 24097 states and 33368 transitions. [2021-11-07 02:29:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 02:29:13,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:29:13,918 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:14,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-07 02:29:14,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:14,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:14,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:29:14,542 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:29:14,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:29:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1871504592, now seen corresponding path program 1 times [2021-11-07 02:29:14,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:29:14,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733447673] [2021-11-07 02:29:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:29:14,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:29:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:29:14,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:29:14,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:29:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:29:19,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:29:19,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:29:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:29:19,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:29:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:29:20,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:29:20,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733447673] [2021-11-07 02:29:20,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733447673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:29:20,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [566928753] [2021-11-07 02:29:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:29:20,747 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:29:20,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:29:20,748 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:29:20,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 02:29:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:29:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:29:26,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:29:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:29:27,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:29:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:29:28,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [566928753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:29:28,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603756200] [2021-11-07 02:29:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:29:28,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:29:28,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:29:28,208 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:29:28,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 02:29:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:29:31,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:29:31,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:29:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:29:31,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:29:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:29:32,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603756200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:29:32,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:29:32,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:29:32,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161614279] [2021-11-07 02:29:32,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:29:32,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:29:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:29:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:29:32,654 INFO L87 Difference]: Start difference. First operand 24097 states and 33368 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:29:38,619 INFO L93 Difference]: Finished difference Result 48202 states and 66789 transitions. [2021-11-07 02:29:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:29:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-07 02:29:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:29:38,657 INFO L225 Difference]: With dead ends: 48202 [2021-11-07 02:29:38,657 INFO L226 Difference]: Without dead ends: 24143 [2021-11-07 02:29:38,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:29:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24143 states. [2021-11-07 02:29:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24143 to 24143. [2021-11-07 02:29:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24143 states, 23865 states have (on average 1.3806830085899853) internal successors, (32950), 23984 states have internal predecessors, (32950), 166 states have call successors, (166), 72 states have call predecessors, (166), 72 states have return successors, (298), 164 states have call predecessors, (298), 166 states have call successors, (298) [2021-11-07 02:29:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24143 states to 24143 states and 33414 transitions. [2021-11-07 02:29:41,199 INFO L78 Accepts]: Start accepts. Automaton has 24143 states and 33414 transitions. Word has length 151 [2021-11-07 02:29:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:29:41,200 INFO L470 AbstractCegarLoop]: Abstraction has 24143 states and 33414 transitions. [2021-11-07 02:29:41,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 24143 states and 33414 transitions. [2021-11-07 02:29:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-07 02:29:41,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:29:41,208 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:29:41,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:41,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:41,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:41,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:29:41,826 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION === [ppp_mp_explodeErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-07 02:29:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:29:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1536380272, now seen corresponding path program 2 times [2021-11-07 02:29:41,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:29:41,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768526081] [2021-11-07 02:29:41,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:29:41,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:29:41,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:29:41,830 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:29:41,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:34:08,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:34:08,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:34:09,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:34:09,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:34:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-07 02:34:10,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:34:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-07 02:34:11,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:34:11,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768526081] [2021-11-07 02:34:11,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768526081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:34:11,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458087399] [2021-11-07 02:34:11,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:34:11,914 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:34:11,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:34:11,923 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:34:11,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b76357e-8f0a-4ee3-ae32-46038c03e388/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process