./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:30,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:30,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:31,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:31,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:31,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:31,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:31,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:31,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:31,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:31,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:31,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:31,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:31,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:31,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:31,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:31,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:31,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:31,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:31,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:31,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:31,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:31,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:31,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:31,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:31,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:31,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:31,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:31,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:31,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:31,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:31,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:31,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:31,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:31,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:31,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:31,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:31,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:31,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:31,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:31,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:31,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:08:31,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:31,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:31,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:31,129 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:31,129 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:31,129 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:31,129 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:08:31,129 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:31,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:31,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:08:31,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:08:31,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:31,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:08:31,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:08:31,138 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:08:31,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:31,139 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:08:31,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:08:31,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:08:31,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:31,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:31,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:31,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:31,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:31,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:08:31,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:31,141 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:31,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:31,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:31,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:31,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:31,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:31,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:31,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:31,144 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:08:31,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:08:31,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:31,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:31,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:31,145 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_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2021-11-07 01:08:31,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:31,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:31,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:31,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:31,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:31,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-07 01:08:31,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/00d70cc72/749f2f068c844363ac90d5a36a4c3a1e/FLAG831dd8996 [2021-11-07 01:08:32,156 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:32,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-07 01:08:32,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/00d70cc72/749f2f068c844363ac90d5a36a4c3a1e/FLAG831dd8996 [2021-11-07 01:08:32,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/00d70cc72/749f2f068c844363ac90d5a36a4c3a1e [2021-11-07 01:08:32,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:32,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:32,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:32,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:32,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:32,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:32" (1/1) ... [2021-11-07 01:08:32,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35db2183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:32, skipping insertion in model container [2021-11-07 01:08:32,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:32" (1/1) ... [2021-11-07 01:08:32,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:32,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:32,973 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-07 01:08:33,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:33,139 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:08:33,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23839403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:33, skipping insertion in model container [2021-11-07 01:08:33,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:33,140 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:08:33,144 INFO L168 Benchmark]: Toolchain (without parser) took 746.71 ms. Allocated memory is still 113.2 MB. Free memory was 70.9 MB in the beginning and 81.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:33,145 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 77.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:33,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.73 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 81.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:33,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 77.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.73 ms. Allocated memory is still 113.2 MB. Free memory was 70.8 MB in the beginning and 81.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:35,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:35,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:35,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:35,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:35,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:35,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:35,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:35,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:35,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:35,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:35,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:35,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:35,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:35,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:35,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:35,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:35,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:35,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:35,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:35,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:35,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:35,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:35,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:35,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:35,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:35,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:35,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:35,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:35,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:35,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:35,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:35,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:35,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:35,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:35,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:35,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:35,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:35,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:35,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:35,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:35,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:08:35,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:35,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:35,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:35,599 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:35,599 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:35,599 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:35,599 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:35,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:35,600 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:35,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:35,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:08:35,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:08:35,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:35,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:35,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:35,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:35,603 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:35,603 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:08:35,603 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:08:35,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:08:35,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:35,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:35,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:35,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:35,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:08:35,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:35,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:35,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:35,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:35,606 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:08:35,606 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:35,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:35,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:35,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:35,607 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_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2021-11-07 01:08:36,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:36,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:36,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:36,039 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:36,040 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:36,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-07 01:08:36,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/37a7c876d/e2e35d00618148809d8fb2a8fea1137d/FLAGc8b4526e4 [2021-11-07 01:08:36,771 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:36,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-07 01:08:36,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/37a7c876d/e2e35d00618148809d8fb2a8fea1137d/FLAGc8b4526e4 [2021-11-07 01:08:37,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/data/37a7c876d/e2e35d00618148809d8fb2a8fea1137d [2021-11-07 01:08:37,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:37,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:37,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:37,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:37,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:37,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:37,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252049ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37, skipping insertion in model container [2021-11-07 01:08:37,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:37,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:37,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:37,596 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-07 01:08:37,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:37,737 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:08:37,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:37,777 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-07 01:08:37,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:37,833 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:08:37,891 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-07 01:08:37,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:37,982 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:08:37,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37 WrapperNode [2021-11-07 01:08:37,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:37,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:37,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:08:37,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:08:37,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:38,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:08:38,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:08:38,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:08:38,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:08:38,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:08:38,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:08:38,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:08:38,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2021-11-07 01:08:38,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:38,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:08:38,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:08:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:08:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:08:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:08:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:08:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:08:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:08:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:08:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:08:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:08:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:08:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:08:43,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:08:43,567 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 01:08:43,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:43 BoogieIcfgContainer [2021-11-07 01:08:43,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:08:43,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:08:43,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:08:43,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:08:43,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:08:37" (1/3) ... [2021-11-07 01:08:43,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774c7e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:43, skipping insertion in model container [2021-11-07 01:08:43,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (2/3) ... [2021-11-07 01:08:43,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774c7e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:43, skipping insertion in model container [2021-11-07 01:08:43,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:43" (3/3) ... [2021-11-07 01:08:43,584 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-2.i [2021-11-07 01:08:43,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:08:43,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:08:43,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:08:43,660 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:08:43,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:08:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:08:43,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:43,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:43,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:43,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-07 01:08:43,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:43,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620612605] [2021-11-07 01:08:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:43,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:43,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:43,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:08:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:43,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:08:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:43,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:43,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:43,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620612605] [2021-11-07 01:08:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620612605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:43,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:43,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:08:43,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434609806] [2021-11-07 01:08:43,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:08:43,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:08:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:08:43,979 INFO L87 Difference]: Start difference. First operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-07 01:08:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:44,032 INFO L93 Difference]: Finished difference Result 332 states and 538 transitions. [2021-11-07 01:08:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:08:44,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 8 [2021-11-07 01:08:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:44,043 INFO L225 Difference]: With dead ends: 332 [2021-11-07 01:08:44,044 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 01:08:44,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:08:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 01:08:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-07 01:08:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-07 01:08:44,088 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-07 01:08:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:44,089 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-07 01:08:44,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-07 01:08:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-07 01:08:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:08:44,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:44,090 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:44,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:44,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:44,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:44,303 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-07 01:08:44,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:44,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348363830] [2021-11-07 01:08:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:44,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:44,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:44,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:44,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:08:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:44,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:08:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:44,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:44,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:44,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348363830] [2021-11-07 01:08:44,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348363830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:44,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:44,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:08:44,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724695675] [2021-11-07 01:08:44,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:08:44,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:08:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:44,585 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:44,817 INFO L93 Difference]: Finished difference Result 267 states and 344 transitions. [2021-11-07 01:08:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 8 [2021-11-07 01:08:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:44,822 INFO L225 Difference]: With dead ends: 267 [2021-11-07 01:08:44,822 INFO L226 Difference]: Without dead ends: 222 [2021-11-07 01:08:44,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-07 01:08:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-07 01:08:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 212 states have (on average 1.3537735849056605) internal successors, (287), 221 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2021-11-07 01:08:44,853 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 8 [2021-11-07 01:08:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:44,854 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2021-11-07 01:08:44,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2021-11-07 01:08:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:08:44,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:44,860 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:44,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:45,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:45,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2050695974, now seen corresponding path program 1 times [2021-11-07 01:08:45,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:45,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252149432] [2021-11-07 01:08:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:45,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:45,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:45,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:08:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:45,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:08:45,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-07 01:08:45,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-07 01:08:46,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:46,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252149432] [2021-11-07 01:08:46,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252149432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:46,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:46,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:08:46,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631650098] [2021-11-07 01:08:46,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:08:46,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:08:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:08:46,245 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:46,378 INFO L93 Difference]: Finished difference Result 444 states and 580 transitions. [2021-11-07 01:08:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 01:08:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:46,381 INFO L225 Difference]: With dead ends: 444 [2021-11-07 01:08:46,381 INFO L226 Difference]: Without dead ends: 230 [2021-11-07 01:08:46,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:08:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-07 01:08:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2021-11-07 01:08:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 218 states have (on average 1.2706422018348624) internal successors, (277), 227 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2021-11-07 01:08:46,398 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 110 [2021-11-07 01:08:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:46,399 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 277 transitions. [2021-11-07 01:08:46,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 277 transitions. [2021-11-07 01:08:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:08:46,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:46,404 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:46,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:46,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:46,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1601617830, now seen corresponding path program 1 times [2021-11-07 01:08:46,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:46,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774048463] [2021-11-07 01:08:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:46,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:46,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:46,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:46,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:08:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:47,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:08:47,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:08:47,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:08:48,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:48,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774048463] [2021-11-07 01:08:48,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774048463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:48,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:48,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:08:48,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45217784] [2021-11-07 01:08:48,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:08:48,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:08:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:08:48,225 INFO L87 Difference]: Start difference. First operand 228 states and 277 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:48,344 INFO L93 Difference]: Finished difference Result 413 states and 507 transitions. [2021-11-07 01:08:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:48,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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 110 [2021-11-07 01:08:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:48,347 INFO L225 Difference]: With dead ends: 413 [2021-11-07 01:08:48,347 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 01:08:48,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:08:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 01:08:48,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-07 01:08:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 215 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions. [2021-11-07 01:08:48,359 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 110 [2021-11-07 01:08:48,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:48,359 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 257 transitions. [2021-11-07 01:08:48,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions. [2021-11-07 01:08:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:08:48,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:48,364 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:48,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:48,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:48,582 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1357916902, now seen corresponding path program 1 times [2021-11-07 01:08:48,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:48,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775823765] [2021-11-07 01:08:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:48,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:48,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:48,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:08:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:49,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:08:49,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 01:08:49,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 01:08:50,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:50,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775823765] [2021-11-07 01:08:50,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775823765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:50,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:50,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:08:50,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075397994] [2021-11-07 01:08:50,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:08:50,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:08:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:08:50,099 INFO L87 Difference]: Start difference. First operand 216 states and 257 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:50,424 INFO L93 Difference]: Finished difference Result 383 states and 462 transitions. [2021-11-07 01:08:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:08:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 110 [2021-11-07 01:08:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:50,427 INFO L225 Difference]: With dead ends: 383 [2021-11-07 01:08:50,427 INFO L226 Difference]: Without dead ends: 214 [2021-11-07 01:08:50,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:08:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-07 01:08:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-07 01:08:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 204 states have (on average 1.2450980392156863) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-11-07 01:08:50,436 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 110 [2021-11-07 01:08:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:50,437 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-11-07 01:08:50,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-11-07 01:08:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 01:08:50,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:50,440 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:50,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:50,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:50,657 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1177328342, now seen corresponding path program 1 times [2021-11-07 01:08:50,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:50,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287209195] [2021-11-07 01:08:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:50,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:50,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:50,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:50,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:08:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:51,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:08:51,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:08:51,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:08:51,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:51,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287209195] [2021-11-07 01:08:51,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287209195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:51,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:51,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:08:51,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107014101] [2021-11-07 01:08:51,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:08:51,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:51,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:08:51,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:51,803 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:51,856 INFO L93 Difference]: Finished difference Result 393 states and 478 transitions. [2021-11-07 01:08:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-07 01:08:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:51,859 INFO L225 Difference]: With dead ends: 393 [2021-11-07 01:08:51,861 INFO L226 Difference]: Without dead ends: 220 [2021-11-07 01:08:51,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-07 01:08:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-07 01:08:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 210 states have (on average 1.2380952380952381) internal successors, (260), 219 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 260 transitions. [2021-11-07 01:08:51,870 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 260 transitions. Word has length 117 [2021-11-07 01:08:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:51,871 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 260 transitions. [2021-11-07 01:08:51,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 260 transitions. [2021-11-07 01:08:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 01:08:51,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:51,876 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:51,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:52,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:52,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:08:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1351948363, now seen corresponding path program 1 times [2021-11-07 01:08:52,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:52,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672619175] [2021-11-07 01:08:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:52,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:52,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:52,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:08:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:52,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:08:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:08:53,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:08:53,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:53,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672619175] [2021-11-07 01:08:53,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672619175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:53,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1826735762] [2021-11-07 01:08:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:53,427 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:53,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:53,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:53,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:08:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:54,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:08:54,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:08:54,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:08:54,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1826735762] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:54,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292183079] [2021-11-07 01:08:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:54,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:08:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:54,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:08:54,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:08:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:55,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:08:55,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:56,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:56,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292183079] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:56,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:08:56,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-07 01:08:56,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329845597] [2021-11-07 01:08:56,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:08:56,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:08:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:08:56,583 INFO L87 Difference]: Start difference. First operand 220 states and 260 transitions. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:00,344 INFO L93 Difference]: Finished difference Result 781 states and 960 transitions. [2021-11-07 01:09:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 01:09:00,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 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 120 [2021-11-07 01:09:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:00,349 INFO L225 Difference]: With dead ends: 781 [2021-11-07 01:09:00,350 INFO L226 Difference]: Without dead ends: 604 [2021-11-07 01:09:00,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=1963, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:09:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-07 01:09:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-11-07 01:09:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 594 states have (on average 1.1851851851851851) internal successors, (704), 603 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 704 transitions. [2021-11-07 01:09:00,376 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 704 transitions. Word has length 120 [2021-11-07 01:09:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:00,377 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 704 transitions. [2021-11-07 01:09:00,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 704 transitions. [2021-11-07 01:09:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-07 01:09:00,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:00,382 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:00,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:00,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:00,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:00,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:00,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:09:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -574302741, now seen corresponding path program 2 times [2021-11-07 01:09:00,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:00,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628746815] [2021-11-07 01:09:00,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:09:00,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:00,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:01,002 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:01,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:09:02,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:09:02,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:09:02,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:09:02,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-07 01:09:03,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-07 01:09:04,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:04,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628746815] [2021-11-07 01:09:04,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628746815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:04,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [506952088] [2021-11-07 01:09:04,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:09:04,204 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:09:04,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:09:04,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:09:05,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:09:05,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:09:05,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:09:05,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-07 01:09:06,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-07 01:09:07,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [506952088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:07,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218423884] [2021-11-07 01:09:07,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:09:07,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:09:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:09:07,473 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:09:07,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:09:08,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:09:08,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:09:08,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:09:08,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-11-07 01:09:09,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-11-07 01:09:10,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218423884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:10,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:09:10,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 6, 6] total 23 [2021-11-07 01:09:10,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243457908] [2021-11-07 01:09:10,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:09:10,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:09:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:09:10,793 INFO L87 Difference]: Start difference. First operand 604 states and 704 transitions. Second operand has 23 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:13,568 INFO L93 Difference]: Finished difference Result 1733 states and 2131 transitions. [2021-11-07 01:09:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:09:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 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 330 [2021-11-07 01:09:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:13,576 INFO L225 Difference]: With dead ends: 1733 [2021-11-07 01:09:13,577 INFO L226 Difference]: Without dead ends: 1176 [2021-11-07 01:09:13,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1960 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:09:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2021-11-07 01:09:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 724. [2021-11-07 01:09:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 714 states have (on average 1.1624649859943978) internal successors, (830), 723 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 830 transitions. [2021-11-07 01:09:13,712 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 830 transitions. Word has length 330 [2021-11-07 01:09:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:13,712 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 830 transitions. [2021-11-07 01:09:13,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 830 transitions. [2021-11-07 01:09:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-07 01:09:13,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:13,731 INFO L513 BasicCegarLoop]: trace histogram [14, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:13,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:13,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:14,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:14,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:09:14,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:09:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 890409067, now seen corresponding path program 3 times [2021-11-07 01:09:14,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:14,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146418622] [2021-11-07 01:09:14,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:09:14,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:14,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:14,335 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:14,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02358998-f34a-4164-9db6-c2ff0e9bd166/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process