./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 232b8770d72be0c69bb3b6e33b82b59b612dcbb47eb932e66c113d1f5f5b981f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:12:14,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:12:14,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:12:14,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:12:14,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:12:14,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:12:14,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:12:14,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:12:14,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:12:14,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:12:14,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:12:14,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:12:14,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:12:14,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:12:14,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:12:14,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:12:14,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:12:14,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:12:14,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:12:14,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:12:14,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:12:14,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:12:14,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:12:14,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:12:14,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:12:14,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:12:14,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:12:14,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:12:14,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:12:14,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:12:14,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:12:14,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:12:14,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:12:14,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:12:14,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:12:14,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:12:14,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:12:14,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:12:14,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:12:14,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:12:14,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:12:14,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:12:14,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:12:14,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:12:14,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:12:14,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:12:14,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:12:14,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:12:14,252 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:12:14,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:12:14,252 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:12:14,253 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:12:14,254 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:12:14,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:12:14,255 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:12:14,255 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:12:14,255 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:12:14,256 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:12:14,256 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:12:14,256 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:12:14,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:12:14,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:12:14,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:12:14,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:12:14,258 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:12:14,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:12:14,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:12:14,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:12:14,259 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:12:14,259 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:12:14,260 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:12:14,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:12:14,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:12:14,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:12:14,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:12:14,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:12:14,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:12:14,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:12:14,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:12:14,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:12:14,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:12:14,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:12:14,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:12:14,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:12:14,266 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_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 232b8770d72be0c69bb3b6e33b82b59b612dcbb47eb932e66c113d1f5f5b981f [2021-11-21 00:12:14,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:12:14,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:12:14,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:12:14,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:12:14,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:12:14,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i [2021-11-21 00:12:14,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/393e3a315/91c99de73e704848a45810d2de695bc7/FLAGed0ff326e [2021-11-21 00:12:15,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:12:15,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i [2021-11-21 00:12:15,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/393e3a315/91c99de73e704848a45810d2de695bc7/FLAGed0ff326e [2021-11-21 00:12:15,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/393e3a315/91c99de73e704848a45810d2de695bc7 [2021-11-21 00:12:15,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:12:15,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:12:15,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:15,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:12:15,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:12:15,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:15" (1/1) ... [2021-11-21 00:12:15,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fee8b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:15, skipping insertion in model container [2021-11-21 00:12:15,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:15" (1/1) ... [2021-11-21 00:12:15,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:12:15,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:12:16,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:16,199 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) [2021-11-21 00:12:16,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e0e72ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:16, skipping insertion in model container [2021-11-21 00:12:16,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:16,202 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 00:12:16,205 INFO L158 Benchmark]: Toolchain (without parser) took 491.04ms. Allocated memory is still 94.4MB. Free memory was 57.4MB in the beginning and 66.0MB in the end (delta: -8.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 00:12:16,208 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 64.8MB in the beginning and 64.8MB in the end (delta: 23.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:12:16,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.55ms. Allocated memory is still 94.4MB. Free memory was 57.0MB in the beginning and 66.0MB in the end (delta: -9.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 00:12:16,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 64.8MB in the beginning and 64.8MB in the end (delta: 23.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.55ms. Allocated memory is still 94.4MB. Free memory was 57.0MB in the beginning and 66.0MB in the end (delta: -9.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 232b8770d72be0c69bb3b6e33b82b59b612dcbb47eb932e66c113d1f5f5b981f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:12:18,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:12:18,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:12:18,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:12:18,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:12:18,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:12:18,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:12:18,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:12:18,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:12:18,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:12:18,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:12:18,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:12:18,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:12:19,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:12:19,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:12:19,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:12:19,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:12:19,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:12:19,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:12:19,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:12:19,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:12:19,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:12:19,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:12:19,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:12:19,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:12:19,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:12:19,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:12:19,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:12:19,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:12:19,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:12:19,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:12:19,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:12:19,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:12:19,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:12:19,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:12:19,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:12:19,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:12:19,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:12:19,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:12:19,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:12:19,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:12:19,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 00:12:19,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:12:19,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:12:19,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:12:19,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:12:19,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:12:19,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:12:19,136 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:12:19,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:12:19,136 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:12:19,137 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:12:19,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:12:19,138 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:12:19,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:12:19,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:12:19,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:12:19,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:12:19,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:12:19,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:12:19,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:12:19,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:12:19,143 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:12:19,143 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:12:19,144 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:12:19,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:12:19,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:12:19,144 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:12:19,145 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:12:19,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:12:19,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:12:19,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:12:19,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:12:19,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:12:19,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:12:19,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:12:19,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:12:19,148 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:12:19,148 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:12:19,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:12:19,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:12:19,149 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_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 232b8770d72be0c69bb3b6e33b82b59b612dcbb47eb932e66c113d1f5f5b981f [2021-11-21 00:12:19,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:12:19,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:12:19,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:12:19,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:12:19,655 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:12:19,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i [2021-11-21 00:12:19,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/a7873a9a3/255e35aa8c464e6bb993b500cc3ee6e4/FLAGb76d4dc3c [2021-11-21 00:12:20,546 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:12:20,549 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test01-2.i [2021-11-21 00:12:20,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/a7873a9a3/255e35aa8c464e6bb993b500cc3ee6e4/FLAGb76d4dc3c [2021-11-21 00:12:20,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/data/a7873a9a3/255e35aa8c464e6bb993b500cc3ee6e4 [2021-11-21 00:12:20,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:12:20,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:12:20,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:20,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:12:20,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:12:20,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:20" (1/1) ... [2021-11-21 00:12:20,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34db99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:20, skipping insertion in model container [2021-11-21 00:12:20,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:20" (1/1) ... [2021-11-21 00:12:20,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:12:20,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:12:21,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:21,235 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 00:12:21,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:12:21,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:21,350 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:12:21,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:21,454 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:12:21,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21 WrapperNode [2021-11-21 00:12:21,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:21,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:12:21,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:12:21,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:12:21,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,520 INFO L137 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2021-11-21 00:12:21,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:12:21,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:12:21,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:12:21,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:12:21,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:12:21,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:12:21,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:12:21,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:12:21,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (1/1) ... [2021-11-21 00:12:21,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:12:21,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:12:21,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:12:21,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:12:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:12:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:12:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2021-11-21 00:12:21,701 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2021-11-21 00:12:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:12:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:12:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:12:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:12:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:12:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:12:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:12:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:12:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:12:21,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:12:21,839 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:12:21,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:12:22,999 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:12:23,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:12:23,008 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 00:12:23,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:12:23 BoogieIcfgContainer [2021-11-21 00:12:23,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:12:23,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:12:23,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:12:23,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:12:23,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:12:20" (1/3) ... [2021-11-21 00:12:23,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f738a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:12:23, skipping insertion in model container [2021-11-21 00:12:23,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:21" (2/3) ... [2021-11-21 00:12:23,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f738a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:12:23, skipping insertion in model container [2021-11-21 00:12:23,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:12:23" (3/3) ... [2021-11-21 00:12:23,019 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01-2.i [2021-11-21 00:12:23,024 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:12:23,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-11-21 00:12:23,072 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:12:23,079 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-21 00:12:23,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-11-21 00:12:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 92 states have (on average 2.1630434782608696) internal successors, (199), 184 states have internal predecessors, (199), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:12:23,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:23,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:12:23,106 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash 4835205, now seen corresponding path program 1 times [2021-11-21 00:12:23,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:23,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314959357] [2021-11-21 00:12:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:23,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:23,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:23,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:23,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:12:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:23,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:12:23,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:23,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:12:23,398 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:12:23,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-21 00:12:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:23,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:23,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:23,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314959357] [2021-11-21 00:12:23,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314959357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:23,505 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:23,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:12:23,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721539599] [2021-11-21 00:12:23,508 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:23,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:12:23,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:23,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:12:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:12:23,552 INFO L87 Difference]: Start difference. First operand has 188 states, 92 states have (on average 2.1630434782608696) internal successors, (199), 184 states have internal predecessors, (199), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-11-21 00:12:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:24,322 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2021-11-21 00:12:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:12:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 4 [2021-11-21 00:12:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:24,348 INFO L225 Difference]: With dead ends: 208 [2021-11-21 00:12:24,348 INFO L226 Difference]: Without dead ends: 206 [2021-11-21 00:12:24,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:12:24,354 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:24,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 288 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:12:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-21 00:12:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2021-11-21 00:12:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 176 states have internal predecessors, (187), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 191 transitions. [2021-11-21 00:12:24,434 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 191 transitions. Word has length 4 [2021-11-21 00:12:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:24,434 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 191 transitions. [2021-11-21 00:12:24,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-11-21 00:12:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 191 transitions. [2021-11-21 00:12:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:12:24,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:24,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:12:24,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:24,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:24,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:24,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash 4835206, now seen corresponding path program 1 times [2021-11-21 00:12:24,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:24,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363565257] [2021-11-21 00:12:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:24,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:24,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:24,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:24,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:12:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:24,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:12:24,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:24,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:12:24,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:12:24,808 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:12:24,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-21 00:12:24,816 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:12:24,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 00:12:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:24,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:25,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:25,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363565257] [2021-11-21 00:12:25,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363565257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:25,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:25,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:12:25,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285732776] [2021-11-21 00:12:25,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:25,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:12:25,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:12:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:12:25,148 INFO L87 Difference]: Start difference. First operand 180 states and 191 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-21 00:12:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:25,912 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2021-11-21 00:12:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:12:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 4 [2021-11-21 00:12:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:25,915 INFO L225 Difference]: With dead ends: 182 [2021-11-21 00:12:25,915 INFO L226 Difference]: Without dead ends: 182 [2021-11-21 00:12:25,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:12:25,917 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 76 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:25,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 370 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 223 Unchecked, 0.7s Time] [2021-11-21 00:12:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-21 00:12:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-21 00:12:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 93 states have (on average 2.032258064516129) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2021-11-21 00:12:25,932 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 4 [2021-11-21 00:12:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:25,932 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2021-11-21 00:12:25,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-21 00:12:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2021-11-21 00:12:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:12:25,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:25,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:12:25,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 00:12:26,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:26,144 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash 149891462, now seen corresponding path program 1 times [2021-11-21 00:12:26,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:26,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915742799] [2021-11-21 00:12:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:26,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:26,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:26,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:26,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:12:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:12:26,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:26,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:12:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:26,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:26,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:26,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915742799] [2021-11-21 00:12:26,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915742799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:26,251 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:26,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:12:26,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781943728] [2021-11-21 00:12:26,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:26,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:12:26,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:12:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:12:26,253 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-21 00:12:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:26,682 INFO L93 Difference]: Finished difference Result 205 states and 217 transitions. [2021-11-21 00:12:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:26,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-21 00:12:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:26,688 INFO L225 Difference]: With dead ends: 205 [2021-11-21 00:12:26,688 INFO L226 Difference]: Without dead ends: 205 [2021-11-21 00:12:26,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:12:26,690 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 64 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:26,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 230 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:12:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-21 00:12:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 180. [2021-11-21 00:12:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 93 states have (on average 2.010752688172043) internal successors, (187), 176 states have internal predecessors, (187), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 191 transitions. [2021-11-21 00:12:26,709 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 191 transitions. Word has length 5 [2021-11-21 00:12:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:26,709 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 191 transitions. [2021-11-21 00:12:26,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-21 00:12:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 191 transitions. [2021-11-21 00:12:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:12:26,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:26,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:12:26,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:26,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:26,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 149891463, now seen corresponding path program 1 times [2021-11-21 00:12:26,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:26,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168159689] [2021-11-21 00:12:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:26,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:26,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:26,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:12:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:26,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:12:26,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:27,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:12:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:27,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:27,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:27,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168159689] [2021-11-21 00:12:27,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168159689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:27,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:27,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:12:27,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872251159] [2021-11-21 00:12:27,106 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:27,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:27,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:27,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:27,107 INFO L87 Difference]: Start difference. First operand 180 states and 191 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-21 00:12:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:27,831 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2021-11-21 00:12:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-11-21 00:12:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:27,835 INFO L225 Difference]: With dead ends: 178 [2021-11-21 00:12:27,835 INFO L226 Difference]: Without dead ends: 178 [2021-11-21 00:12:27,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:27,837 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 11 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:27,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 363 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:12:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-21 00:12:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-21 00:12:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 93 states have (on average 1.989247311827957) internal successors, (185), 174 states have internal predecessors, (185), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2021-11-21 00:12:27,856 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 5 [2021-11-21 00:12:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:27,856 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2021-11-21 00:12:27,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-21 00:12:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2021-11-21 00:12:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 00:12:27,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:27,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:27,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:28,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:28,070 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1983189560, now seen corresponding path program 1 times [2021-11-21 00:12:28,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:28,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249835389] [2021-11-21 00:12:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:28,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:28,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:28,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:28,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:12:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:28,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:12:28,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:28,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:28,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 00:12:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:28,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249835389] [2021-11-21 00:12:28,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249835389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:28,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:28,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 00:12:28,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757357080] [2021-11-21 00:12:28,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:28,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:12:28,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:12:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:12:28,353 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-11-21 00:12:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:29,014 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2021-11-21 00:12:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:12:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 7 [2021-11-21 00:12:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:29,016 INFO L225 Difference]: With dead ends: 177 [2021-11-21 00:12:29,017 INFO L226 Difference]: Without dead ends: 177 [2021-11-21 00:12:29,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:12:29,019 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 418 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:29,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 480 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:12:29,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-21 00:12:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-21 00:12:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 93 states have (on average 1.978494623655914) internal successors, (184), 173 states have internal predecessors, (184), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2021-11-21 00:12:29,036 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 7 [2021-11-21 00:12:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:29,036 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2021-11-21 00:12:29,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-11-21 00:12:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2021-11-21 00:12:29,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:12:29,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:29,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:29,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:29,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:29,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:29,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash 370034199, now seen corresponding path program 1 times [2021-11-21 00:12:29,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:29,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681690732] [2021-11-21 00:12:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:29,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:29,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:29,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 00:12:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:29,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:12:29,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:29,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:12:29,419 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:12:29,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-21 00:12:29,540 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 00:12:29,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-11-21 00:12:29,567 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 00:12:29,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 00:12:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-21 00:12:29,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-21 00:12:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:40,530 WARN L227 SmtUtils]: Spent 7.28s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:12:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:44,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:44,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681690732] [2021-11-21 00:12:44,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681690732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:44,761 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:44,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-21 00:12:44,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355442958] [2021-11-21 00:12:44,762 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:44,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:12:44,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:12:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=36, Unknown=3, NotChecked=0, Total=56 [2021-11-21 00:12:44,763 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-11-21 00:12:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:45,687 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2021-11-21 00:12:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:12:45,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 10 [2021-11-21 00:12:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:45,691 INFO L225 Difference]: With dead ends: 182 [2021-11-21 00:12:45,691 INFO L226 Difference]: Without dead ends: 182 [2021-11-21 00:12:45,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=30, Invalid=57, Unknown=3, NotChecked=0, Total=90 [2021-11-21 00:12:45,693 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 4 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:45,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 833 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 97 Unchecked, 0.8s Time] [2021-11-21 00:12:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-21 00:12:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2021-11-21 00:12:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 97 states have (on average 1.9381443298969072) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-11-21 00:12:45,720 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 10 [2021-11-21 00:12:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:45,720 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-11-21 00:12:45,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-11-21 00:12:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-11-21 00:12:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:12:45,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:45,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:45,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:45,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:45,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash -882700124, now seen corresponding path program 1 times [2021-11-21 00:12:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:45,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260027796] [2021-11-21 00:12:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:45,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:45,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:45,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 00:12:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:46,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:12:46,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:46,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:46,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:46,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260027796] [2021-11-21 00:12:46,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260027796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:46,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:46,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:12:46,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877234169] [2021-11-21 00:12:46,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:46,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:46,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:46,150 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:46,201 INFO L93 Difference]: Finished difference Result 257 states and 272 transitions. [2021-11-21 00:12:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:12:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 00:12:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:46,204 INFO L225 Difference]: With dead ends: 257 [2021-11-21 00:12:46,204 INFO L226 Difference]: Without dead ends: 257 [2021-11-21 00:12:46,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:12:46,206 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 79 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:46,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 542 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:12:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-21 00:12:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 221. [2021-11-21 00:12:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 136 states have (on average 1.9705882352941178) internal successors, (268), 216 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 272 transitions. [2021-11-21 00:12:46,225 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 272 transitions. Word has length 12 [2021-11-21 00:12:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:46,226 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 272 transitions. [2021-11-21 00:12:46,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 272 transitions. [2021-11-21 00:12:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:12:46,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:46,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:46,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:46,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:46,443 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1593893879, now seen corresponding path program 1 times [2021-11-21 00:12:46,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:46,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375295098] [2021-11-21 00:12:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:46,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:46,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:46,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:46,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 00:12:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:46,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:12:46,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:46,590 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:12:46,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-21 00:12:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:46,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:46,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375295098] [2021-11-21 00:12:46,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375295098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:46,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:46,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:12:46,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66723944] [2021-11-21 00:12:46,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:46,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:12:46,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:12:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:12:46,653 INFO L87 Difference]: Start difference. First operand 221 states and 272 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:47,149 INFO L93 Difference]: Finished difference Result 210 states and 248 transitions. [2021-11-21 00:12:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:12:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:47,152 INFO L225 Difference]: With dead ends: 210 [2021-11-21 00:12:47,153 INFO L226 Difference]: Without dead ends: 210 [2021-11-21 00:12:47,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:12:47,154 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 62 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:47,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 196 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:12:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-21 00:12:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2021-11-21 00:12:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 136 states have (on average 1.7794117647058822) internal successors, (242), 203 states have internal predecessors, (242), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 246 transitions. [2021-11-21 00:12:47,165 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 246 transitions. Word has length 13 [2021-11-21 00:12:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:47,165 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 246 transitions. [2021-11-21 00:12:47,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 246 transitions. [2021-11-21 00:12:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:12:47,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:47,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:47,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-21 00:12:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:47,380 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1593893878, now seen corresponding path program 1 times [2021-11-21 00:12:47,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:47,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586778787] [2021-11-21 00:12:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:47,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:47,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:47,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 00:12:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:47,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:12:47,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:47,528 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:12:47,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-21 00:12:47,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-21 00:12:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:47,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:47,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:47,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586778787] [2021-11-21 00:12:47,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586778787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:47,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:47,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:12:47,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587293790] [2021-11-21 00:12:47,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:47,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:47,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:47,661 INFO L87 Difference]: Start difference. First operand 208 states and 246 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:47,668 INFO L93 Difference]: Finished difference Result 207 states and 244 transitions. [2021-11-21 00:12:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:47,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:12:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:47,670 INFO L225 Difference]: With dead ends: 207 [2021-11-21 00:12:47,670 INFO L226 Difference]: Without dead ends: 207 [2021-11-21 00:12:47,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:47,672 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:47,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 83 Unchecked, 0.0s Time] [2021-11-21 00:12:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-21 00:12:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-21 00:12:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7647058823529411) internal successors, (240), 202 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 244 transitions. [2021-11-21 00:12:47,681 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 244 transitions. Word has length 13 [2021-11-21 00:12:47,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:47,682 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 244 transitions. [2021-11-21 00:12:47,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 244 transitions. [2021-11-21 00:12:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:12:47,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:47,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:47,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:47,898 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr11REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1465867551, now seen corresponding path program 1 times [2021-11-21 00:12:47,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023245539] [2021-11-21 00:12:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:47,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:47,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:47,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 00:12:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:48,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:12:48,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:48,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:48,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023245539] [2021-11-21 00:12:48,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023245539] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:48,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:48,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:12:48,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834083021] [2021-11-21 00:12:48,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:48,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:48,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:48,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:48,086 INFO L87 Difference]: Start difference. First operand 207 states and 244 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:48,154 INFO L93 Difference]: Finished difference Result 222 states and 262 transitions. [2021-11-21 00:12:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:12:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 00:12:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:48,156 INFO L225 Difference]: With dead ends: 222 [2021-11-21 00:12:48,157 INFO L226 Difference]: Without dead ends: 222 [2021-11-21 00:12:48,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:48,158 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 14 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:48,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 496 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:12:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-21 00:12:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2021-11-21 00:12:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 148 states have (on average 1.7432432432432432) internal successors, (258), 214 states have internal predecessors, (258), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2021-11-21 00:12:48,168 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 16 [2021-11-21 00:12:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:48,168 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2021-11-21 00:12:48,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2021-11-21 00:12:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:12:48,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:48,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:48,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:48,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:48,383 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:48,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:48,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1465867601, now seen corresponding path program 1 times [2021-11-21 00:12:48,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:48,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387024188] [2021-11-21 00:12:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:48,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:48,385 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:48,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 00:12:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:48,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:12:48,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:48,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:48,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 00:12:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:48,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:48,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387024188] [2021-11-21 00:12:48,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387024188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:48,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:48,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:12:48,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629317656] [2021-11-21 00:12:48,643 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:48,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:12:48,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:12:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:12:48,644 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:48,925 INFO L93 Difference]: Finished difference Result 213 states and 246 transitions. [2021-11-21 00:12:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 00:12:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:48,930 INFO L225 Difference]: With dead ends: 213 [2021-11-21 00:12:48,930 INFO L226 Difference]: Without dead ends: 213 [2021-11-21 00:12:48,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:12:48,931 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 206 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:48,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 247 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:12:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-21 00:12:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2021-11-21 00:12:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 148 states have (on average 1.6216216216216217) internal successors, (240), 206 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2021-11-21 00:12:48,942 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 16 [2021-11-21 00:12:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:48,942 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2021-11-21 00:12:48,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2021-11-21 00:12:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:12:48,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:48,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:48,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:49,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:49,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:49,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1802744652, now seen corresponding path program 1 times [2021-11-21 00:12:49,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:49,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261398556] [2021-11-21 00:12:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:49,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:49,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:49,152 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:49,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 00:12:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:49,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:12:49,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:49,263 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:12:49,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-21 00:12:49,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 00:12:49,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 00:12:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:49,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:49,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261398556] [2021-11-21 00:12:49,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261398556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:49,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:49,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 00:12:49,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613799470] [2021-11-21 00:12:49,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:49,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:12:49,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:12:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:12:49,471 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:50,719 INFO L93 Difference]: Finished difference Result 212 states and 242 transitions. [2021-11-21 00:12:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:12:50,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 00:12:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:50,722 INFO L225 Difference]: With dead ends: 212 [2021-11-21 00:12:50,722 INFO L226 Difference]: Without dead ends: 212 [2021-11-21 00:12:50,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:12:50,723 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 4 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:50,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 587 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 00:12:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-21 00:12:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2021-11-21 00:12:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 148 states have (on average 1.6081081081081081) internal successors, (238), 206 states have internal predecessors, (238), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2021-11-21 00:12:50,732 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 17 [2021-11-21 00:12:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:50,732 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2021-11-21 00:12:50,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2021-11-21 00:12:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:12:50,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:50,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:50,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:50,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:50,946 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1802744651, now seen corresponding path program 1 times [2021-11-21 00:12:50,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546431568] [2021-11-21 00:12:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:50,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:50,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:50,948 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:50,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 00:12:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:51,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:12:51,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:51,084 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:12:51,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-21 00:12:51,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-21 00:12:51,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:12:51,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 36 [2021-11-21 00:12:51,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 00:12:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:51,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:12:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:12:52,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:12:52,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546431568] [2021-11-21 00:12:52,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546431568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:52,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:52,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-21 00:12:52,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625117765] [2021-11-21 00:12:52,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:52,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:12:52,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:12:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:12:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:12:52,026 INFO L87 Difference]: Start difference. First operand 211 states and 242 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:55,353 INFO L93 Difference]: Finished difference Result 211 states and 240 transitions. [2021-11-21 00:12:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:12:55,354 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 00:12:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:55,356 INFO L225 Difference]: With dead ends: 211 [2021-11-21 00:12:55,356 INFO L226 Difference]: Without dead ends: 211 [2021-11-21 00:12:55,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:12:55,358 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 6 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:55,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 674 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:12:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-21 00:12:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-11-21 00:12:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 148 states have (on average 1.5945945945945945) internal successors, (236), 206 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:12:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 240 transitions. [2021-11-21 00:12:55,366 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 240 transitions. Word has length 17 [2021-11-21 00:12:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:55,367 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 240 transitions. [2021-11-21 00:12:55,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:12:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 240 transitions. [2021-11-21 00:12:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:12:55,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:55,368 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:55,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:55,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:12:55,595 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:12:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1188184013, now seen corresponding path program 1 times [2021-11-21 00:12:55,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:12:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4060662] [2021-11-21 00:12:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:55,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:12:55,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:12:55,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:12:55,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 00:12:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:55,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:12:55,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:55,796 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:12:55,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-21 00:12:55,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 00:12:56,100 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 00:12:56,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 136 treesize of output 47 [2021-11-21 00:12:56,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2021-11-21 00:12:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:12:56,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:13:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:13:04,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:13:04,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4060662] [2021-11-21 00:13:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4060662] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:13:04,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1404980936] [2021-11-21 00:13:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:04,343 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:13:04,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:13:04,350 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:13:04,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-21 00:13:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:04,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:13:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:04,642 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:13:04,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-21 00:13:04,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 00:13:04,873 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 00:13:04,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 46 [2021-11-21 00:13:04,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2021-11-21 00:13:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:13:04,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:13:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:13:19,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1404980936] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:13:19,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080977346] [2021-11-21 00:13:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:19,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:19,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:19,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:19,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 00:13:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:19,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:13:19,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:19,275 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:13:19,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-21 00:13:19,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 00:13:19,485 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 00:13:19,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 46 [2021-11-21 00:13:19,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2021-11-21 00:13:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:13:19,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:13:21,671 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (create_data_~counter~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (|create_data_#t~mem9.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| (let ((.cse0 (bvmul create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base|) (bvadd |create_data_#t~mem9.offset| .cse0) v_DerPreprocessor_9) (bvadd |create_data_#t~mem9.offset| .cse0 (_ bv1 32)) v_DerPreprocessor_10) (bvadd |create_data_#t~mem9.offset| (_ bv2 32) .cse0) v_DerPreprocessor_11) (bvadd |create_data_#t~mem9.offset| (_ bv3 32) .cse0) v_DerPreprocessor_12))) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))))) (_ bv1 1)))) is different from false [2021-11-21 00:13:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-21 00:13:24,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080977346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:13:24,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:13:24,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 13 [2021-11-21 00:13:24,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993351808] [2021-11-21 00:13:24,911 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:13:24,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:13:24,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:13:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:13:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=4, NotChecked=22, Total=182 [2021-11-21 00:13:24,912 INFO L87 Difference]: Start difference. First operand 211 states and 240 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:13:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:25,420 INFO L93 Difference]: Finished difference Result 216 states and 244 transitions. [2021-11-21 00:13:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:13:25,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-21 00:13:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:25,423 INFO L225 Difference]: With dead ends: 216 [2021-11-21 00:13:25,423 INFO L226 Difference]: Without dead ends: 216 [2021-11-21 00:13:25,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=4, NotChecked=24, Total=210 [2021-11-21 00:13:25,424 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 42 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:25,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 647 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 355 Unchecked, 0.4s Time] [2021-11-21 00:13:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-21 00:13:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2021-11-21 00:13:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 148 states have (on average 1.5810810810810811) internal successors, (234), 205 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:13:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 238 transitions. [2021-11-21 00:13:25,433 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 238 transitions. Word has length 22 [2021-11-21 00:13:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:25,434 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 238 transitions. [2021-11-21 00:13:25,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:13:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 238 transitions. [2021-11-21 00:13:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:13:25,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:25,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:13:25,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 00:13:25,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-21 00:13:25,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-21 00:13:26,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 00:13:26,054 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 00:13:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1188184014, now seen corresponding path program 1 times [2021-11-21 00:13:26,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:13:26,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099444094] [2021-11-21 00:13:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:26,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:13:26,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:13:26,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:13:26,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1970f630-aad5-47ff-b7c4-6c17df04345c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 00:13:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:26,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:13:26,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:26,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-21 00:13:26,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 00:13:26,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:13:26,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-21 00:13:26,585 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 00:13:26,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 241 treesize of output 122 [2021-11-21 00:13:26,701 INFO L354 Elim1Store]: treesize reduction 714, result has 1.2 percent of original size [2021-11-21 00:13:26,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 24 [2021-11-21 00:13:26,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-21 00:13:26,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-21 00:13:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:13:26,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:13:49,934 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:14:13,595 WARN L227 SmtUtils]: Spent 7.47s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:14:15,747 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (|create_data_#t~mem9.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4)) (.cse1 (bvadd |create_data_#t~mem9.offset| (_ bv1 32))) (.cse2 (bvadd |create_data_#t~mem9.offset| (_ bv2 32))) (.cse3 (bvadd |create_data_#t~mem9.offset| (_ bv3 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse0) |create_data_#t~mem9.offset| v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16)) c_create_data_~data~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) |create_data_#t~mem9.offset| v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20)) c_create_data_~data~0.base) .cse4)))))) (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (|create_data_#t~mem9.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse5 (let ((.cse7 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse7))) (store |c_#memory_$Pointer$.offset| .cse6 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse6) |create_data_#t~mem9.offset| v_DerPreprocessor_13) (bvadd |create_data_#t~mem9.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd |create_data_#t~mem9.offset| (_ bv2 32)) v_DerPreprocessor_15) (bvadd |create_data_#t~mem9.offset| (_ bv3 32)) v_DerPreprocessor_16))) c_create_data_~data~0.base) .cse7)))) (bvule (bvadd (_ bv4 32) .cse5) (bvadd (_ bv8 32) .cse5))))) is different from false