./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:34:21,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:34:21,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:34:21,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:34:21,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:34:21,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:34:21,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:34:21,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:34:21,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:34:21,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:34:21,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:34:21,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:34:21,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:34:21,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:34:21,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:34:21,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:34:21,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:34:21,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:34:21,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:34:21,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:34:21,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:34:21,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:34:21,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:34:21,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:34:21,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:34:21,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:34:21,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:34:21,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:34:21,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:34:21,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:34:21,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:34:21,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:34:21,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:34:21,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:34:21,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:34:21,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:34:21,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:34:21,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:34:21,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:34:21,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:34:21,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:34:21,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 14:34:21,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:34:21,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:34:21,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:34:21,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:34:21,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:34:21,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:34:21,275 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:34:21,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:34:21,276 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:34:21,276 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:34:21,276 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:34:21,276 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:34:21,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:34:21,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:34:21,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:34:21,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:34:21,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:21,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:34:21,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:34:21,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:34:21,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 [2022-12-14 14:34:21,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:34:21,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:34:21,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:34:21,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:34:21,493 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:34:21,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2022-12-14 14:34:24,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:34:24,328 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:34:24,328 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2022-12-14 14:34:24,341 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data/a979fdef3/d51bd037640b4bada9070b281266c698/FLAG7a5dae493 [2022-12-14 14:34:24,647 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data/a979fdef3/d51bd037640b4bada9070b281266c698 [2022-12-14 14:34:24,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:34:24,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:34:24,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:24,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:34:24,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:34:24,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:24" (1/1) ... [2022-12-14 14:34:24,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2c1fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:24, skipping insertion in model container [2022-12-14 14:34:24,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:24" (1/1) ... [2022-12-14 14:34:24,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:34:24,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:34:25,011 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[33021,33034] [2022-12-14 14:34:25,092 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:34:25,101 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[44590,44603] [2022-12-14 14:34:25,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:25,126 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 14:34:25,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68e1d166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:25, skipping insertion in model container [2022-12-14 14:34:25,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:25,127 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 14:34:25,128 INFO L158 Benchmark]: Toolchain (without parser) took 477.47ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 73.1MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 14:34:25,129 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:34:25,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.93ms. Allocated memory is still 130.0MB. Free memory was 93.0MB in the beginning and 73.1MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 14:34:25,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.93ms. Allocated memory is still 130.0MB. Free memory was 93.0MB in the beginning and 73.1MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:34:26,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:34:26,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:34:26,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:34:26,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:34:26,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:34:26,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:34:26,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:34:26,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:34:26,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:34:26,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:34:26,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:34:26,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:34:26,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:34:26,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:34:26,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:34:26,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:34:26,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:34:26,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:34:26,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:34:26,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:34:26,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:34:26,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:34:26,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:34:26,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:34:26,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:34:26,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:34:26,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:34:26,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:34:26,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:34:26,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:34:26,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:34:26,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:34:26,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:34:26,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:34:26,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:34:26,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:34:26,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:34:26,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:34:26,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:34:26,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:34:26,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 14:34:26,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:34:26,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:34:26,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:34:26,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:34:26,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:34:26,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:34:26,511 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:34:26,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:34:26,511 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:34:26,511 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:34:26,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:34:26,511 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:34:26,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:34:26,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:34:26,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:34:26,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:34:26,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:34:26,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:34:26,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:34:26,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:34:26,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:26,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:34:26,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:34:26,515 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 [2022-12-14 14:34:26,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:34:26,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:34:26,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:34:26,758 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:34:26,758 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:34:26,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2022-12-14 14:34:29,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:34:29,529 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:34:29,529 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2022-12-14 14:34:29,542 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data/45ed4d579/cfe8a28902e24ec1aba2f1db82134734/FLAGa47c2f447 [2022-12-14 14:34:29,556 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/data/45ed4d579/cfe8a28902e24ec1aba2f1db82134734 [2022-12-14 14:34:29,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:34:29,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:34:29,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:29,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:34:29,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:34:29,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630dced0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29, skipping insertion in model container [2022-12-14 14:34:29,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:34:29,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:34:29,869 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[33021,33034] [2022-12-14 14:34:29,951 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:34:29,961 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[44590,44603] [2022-12-14 14:34:29,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:29,987 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 14:34:30,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:34:30,059 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[33021,33034] [2022-12-14 14:34:30,101 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:34:30,107 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[44590,44603] [2022-12-14 14:34:30,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:30,118 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:34:30,139 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[33021,33034] [2022-12-14 14:34:30,165 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:34:30,171 WARN L237 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_4dd1c0b5-4714-40be-8943-cf54f927ec0e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i[44590,44603] [2022-12-14 14:34:30,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:30,209 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:34:30,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30 WrapperNode [2022-12-14 14:34:30,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:30,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:34:30,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:34:30,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:34:30,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,291 INFO L138 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1201 [2022-12-14 14:34:30,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:34:30,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:34:30,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:34:30,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:34:30,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:34:30,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:34:30,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:34:30,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:34:30,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (1/1) ... [2022-12-14 14:34:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:30,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:34:30,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:34:30,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:34:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 14:34:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:34:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 14:34:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:34:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:34:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 14:34:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:34:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:34:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:34:30,648 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:34:30,650 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:34:30,653 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 14:34:34,335 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:34:34,347 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:34:34,347 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 14:34:34,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:34 BoogieIcfgContainer [2022-12-14 14:34:34,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:34:34,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:34:34,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:34:34,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:34:34,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:34:29" (1/3) ... [2022-12-14 14:34:34,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b91e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:34:34, skipping insertion in model container [2022-12-14 14:34:34,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:30" (2/3) ... [2022-12-14 14:34:34,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b91e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:34:34, skipping insertion in model container [2022-12-14 14:34:34,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:34" (3/3) ... [2022-12-14 14:34:34,358 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test3-2.i [2022-12-14 14:34:34,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:34:34,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2022-12-14 14:34:34,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:34:34,431 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@cf9de26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:34:34,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2022-12-14 14:34:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:34:34,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:34,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:34:34,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:34,446 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 14:34:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:34,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829312043] [2022-12-14 14:34:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:34,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:34,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:34,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 14:34:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:34,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:34:34,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:34,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 14:34:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:34,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:34,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:34,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829312043] [2022-12-14 14:34:34,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829312043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:34,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:34,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:34:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660775339] [2022-12-14 14:34:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:34,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:34,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:34,636 INFO L87 Difference]: Start difference. First operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-14 14:34:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:36,486 INFO L93 Difference]: Finished difference Result 1442 states and 1526 transitions. [2022-12-14 14:34:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:36,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-12-14 14:34:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:36,501 INFO L225 Difference]: With dead ends: 1442 [2022-12-14 14:34:36,501 INFO L226 Difference]: Without dead ends: 1440 [2022-12-14 14:34:36,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:36,504 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1179 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:36,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 926 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 14:34:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-12-14 14:34:36,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1255. [2022-12-14 14:34:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 623 states have (on average 2.110754414125201) internal successors, (1315), 1249 states have internal predecessors, (1315), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1331 transitions. [2022-12-14 14:34:36,560 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1331 transitions. Word has length 3 [2022-12-14 14:34:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:36,560 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1331 transitions. [2022-12-14 14:34:36,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-14 14:34:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1331 transitions. [2022-12-14 14:34:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:34:36,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:36,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:34:36,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:34:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:36,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 14:34:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:36,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421978530] [2022-12-14 14:34:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:36,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:36,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 14:34:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:36,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:34:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:36,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:34:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:36,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:36,881 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:36,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421978530] [2022-12-14 14:34:36,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421978530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:36,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:36,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:34:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321356206] [2022-12-14 14:34:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:36,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:36,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:36,884 INFO L87 Difference]: Start difference. First operand 1255 states and 1331 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-14 14:34:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:39,970 INFO L93 Difference]: Finished difference Result 1864 states and 1991 transitions. [2022-12-14 14:34:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:39,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-12-14 14:34:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:39,975 INFO L225 Difference]: With dead ends: 1864 [2022-12-14 14:34:39,975 INFO L226 Difference]: Without dead ends: 1864 [2022-12-14 14:34:39,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:39,976 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 650 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:39,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1746 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 14:34:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-12-14 14:34:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1455. [2022-12-14 14:34:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 824 states have (on average 2.095873786407767) internal successors, (1727), 1449 states have internal predecessors, (1727), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1743 transitions. [2022-12-14 14:34:40,000 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1743 transitions. Word has length 3 [2022-12-14 14:34:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:40,000 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1743 transitions. [2022-12-14 14:34:40,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-14 14:34:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1743 transitions. [2022-12-14 14:34:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:34:40,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:40,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:40,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 14:34:40,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:40,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 14:34:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:40,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675706663] [2022-12-14 14:34:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:40,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:40,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:40,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:40,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 14:34:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:40,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:34:40,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:40,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:34:40,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 14:34:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:34:40,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:34:40,454 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 14:34:40,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 14:34:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:40,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:40,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:40,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675706663] [2022-12-14 14:34:40,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675706663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:40,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:40,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:40,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137808296] [2022-12-14 14:34:40,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:40,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:40,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:40,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:40,474 INFO L87 Difference]: Start difference. First operand 1455 states and 1743 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:34:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:43,336 INFO L93 Difference]: Finished difference Result 1633 states and 1932 transitions. [2022-12-14 14:34:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:34:43,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 14:34:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:43,340 INFO L225 Difference]: With dead ends: 1633 [2022-12-14 14:34:43,340 INFO L226 Difference]: Without dead ends: 1633 [2022-12-14 14:34:43,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:43,341 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1470 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:43,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 542 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 14:34:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-12-14 14:34:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1244. [2022-12-14 14:34:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1319 transitions. [2022-12-14 14:34:43,361 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1319 transitions. Word has length 7 [2022-12-14 14:34:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:43,361 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1319 transitions. [2022-12-14 14:34:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:34:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1319 transitions. [2022-12-14 14:34:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:34:43,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:43,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:43,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 14:34:43,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:43,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 14:34:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:43,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675492547] [2022-12-14 14:34:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:43,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:43,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:43,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:43,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 14:34:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:43,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:34:43,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:43,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 14:34:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:43,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:43,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:43,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675492547] [2022-12-14 14:34:43,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675492547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:43,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:43,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:34:43,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806001487] [2022-12-14 14:34:43,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:43,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:43,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:43,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:43,671 INFO L87 Difference]: Start difference. First operand 1244 states and 1319 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 14:34:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:45,522 INFO L93 Difference]: Finished difference Result 1571 states and 1675 transitions. [2022-12-14 14:34:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:45,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-12-14 14:34:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:45,527 INFO L225 Difference]: With dead ends: 1571 [2022-12-14 14:34:45,527 INFO L226 Difference]: Without dead ends: 1571 [2022-12-14 14:34:45,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:45,528 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 988 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:45,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1507 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 14:34:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-12-14 14:34:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1195. [2022-12-14 14:34:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 623 states have (on average 2.012841091492777) internal successors, (1254), 1189 states have internal predecessors, (1254), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1270 transitions. [2022-12-14 14:34:45,542 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1270 transitions. Word has length 8 [2022-12-14 14:34:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:45,542 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1270 transitions. [2022-12-14 14:34:45,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 14:34:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1270 transitions. [2022-12-14 14:34:45,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:34:45,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:45,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:45,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 14:34:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:45,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 14:34:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27785163] [2022-12-14 14:34:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:45,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:45,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:45,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 14:34:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:45,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:34:45,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:45,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:34:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:45,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:45,902 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27785163] [2022-12-14 14:34:45,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27785163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:45,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:45,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:34:45,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306035860] [2022-12-14 14:34:45,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:45,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:45,904 INFO L87 Difference]: Start difference. First operand 1195 states and 1270 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 14:34:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:48,546 INFO L93 Difference]: Finished difference Result 1649 states and 1756 transitions. [2022-12-14 14:34:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:48,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-12-14 14:34:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:48,549 INFO L225 Difference]: With dead ends: 1649 [2022-12-14 14:34:48,549 INFO L226 Difference]: Without dead ends: 1649 [2022-12-14 14:34:48,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:48,550 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 673 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:48,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1910 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 14:34:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-12-14 14:34:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1217. [2022-12-14 14:34:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 655 states have (on average 2.0) internal successors, (1310), 1211 states have internal predecessors, (1310), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1326 transitions. [2022-12-14 14:34:48,564 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1326 transitions. Word has length 8 [2022-12-14 14:34:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:48,564 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1326 transitions. [2022-12-14 14:34:48,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 14:34:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1326 transitions. [2022-12-14 14:34:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:34:48,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:48,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:48,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 14:34:48,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:48,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash 693876885, now seen corresponding path program 1 times [2022-12-14 14:34:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:48,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135074684] [2022-12-14 14:34:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:48,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:48,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:48,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:48,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 14:34:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:48,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:34:48,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:48,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:48,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135074684] [2022-12-14 14:34:48,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135074684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:48,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:48,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:34:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249306859] [2022-12-14 14:34:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:48,897 INFO L87 Difference]: Start difference. First operand 1217 states and 1326 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-14 14:34:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:49,520 INFO L93 Difference]: Finished difference Result 1863 states and 2015 transitions. [2022-12-14 14:34:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:34:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-12-14 14:34:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:49,524 INFO L225 Difference]: With dead ends: 1863 [2022-12-14 14:34:49,524 INFO L226 Difference]: Without dead ends: 1863 [2022-12-14 14:34:49,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:49,524 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 754 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:49,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 3733 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 14:34:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-12-14 14:34:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1461. [2022-12-14 14:34:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 899 states have (on average 1.967741935483871) internal successors, (1769), 1455 states have internal predecessors, (1769), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1785 transitions. [2022-12-14 14:34:49,540 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1785 transitions. Word has length 11 [2022-12-14 14:34:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:49,541 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1785 transitions. [2022-12-14 14:34:49,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-14 14:34:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1785 transitions. [2022-12-14 14:34:49,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:34:49,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:49,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:49,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 14:34:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:49,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:49,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 14:34:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:49,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146320995] [2022-12-14 14:34:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:49,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:49,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:49,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:49,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 14:34:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:49,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:34:49,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:49,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:49,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:49,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146320995] [2022-12-14 14:34:49,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146320995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:49,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:49,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032591410] [2022-12-14 14:34:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:49,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:49,838 INFO L87 Difference]: Start difference. First operand 1461 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:34:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:49,863 INFO L93 Difference]: Finished difference Result 1642 states and 1963 transitions. [2022-12-14 14:34:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:49,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 14:34:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:49,871 INFO L225 Difference]: With dead ends: 1642 [2022-12-14 14:34:49,871 INFO L226 Difference]: Without dead ends: 1642 [2022-12-14 14:34:49,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:49,871 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 602 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:49,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2068 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-12-14 14:34:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1401. [2022-12-14 14:34:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 863 states have (on average 1.9501738122827346) internal successors, (1683), 1395 states have internal predecessors, (1683), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1699 transitions. [2022-12-14 14:34:49,885 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1699 transitions. Word has length 13 [2022-12-14 14:34:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:49,885 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1699 transitions. [2022-12-14 14:34:49,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:34:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1699 transitions. [2022-12-14 14:34:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 14:34:49,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:49,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:49,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 14:34:50,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:50,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-12-14 14:34:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:50,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732191831] [2022-12-14 14:34:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:50,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:50,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:50,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:50,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 14:34:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:50,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:34:50,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:50,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:50,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732191831] [2022-12-14 14:34:50,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732191831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:50,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:50,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:34:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083999779] [2022-12-14 14:34:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:50,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:50,270 INFO L87 Difference]: Start difference. First operand 1401 states and 1699 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-12-14 14:34:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:50,312 INFO L93 Difference]: Finished difference Result 1614 states and 1907 transitions. [2022-12-14 14:34:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:34:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-12-14 14:34:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:50,315 INFO L225 Difference]: With dead ends: 1614 [2022-12-14 14:34:50,315 INFO L226 Difference]: Without dead ends: 1614 [2022-12-14 14:34:50,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:50,316 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 583 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:50,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3190 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-12-14 14:34:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1371. [2022-12-14 14:34:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 847 states have (on average 1.9185360094451003) internal successors, (1625), 1365 states have internal predecessors, (1625), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1641 transitions. [2022-12-14 14:34:50,330 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1641 transitions. Word has length 15 [2022-12-14 14:34:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:50,330 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1641 transitions. [2022-12-14 14:34:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-12-14 14:34:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1641 transitions. [2022-12-14 14:34:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:34:50,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:50,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:50,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 14:34:50,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:50,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1191550546, now seen corresponding path program 1 times [2022-12-14 14:34:50,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:50,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129807978] [2022-12-14 14:34:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:50,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:50,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:50,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:50,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 14:34:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:50,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:34:50,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:50,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:34:50,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:34:50,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:34:50,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-12-14 14:34:50,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:34:50,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-12-14 14:34:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:50,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:50,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:50,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129807978] [2022-12-14 14:34:50,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129807978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:50,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:50,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:34:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819821708] [2022-12-14 14:34:50,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:50,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:50,723 INFO L87 Difference]: Start difference. First operand 1371 states and 1641 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-14 14:34:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:51,960 INFO L93 Difference]: Finished difference Result 1825 states and 2165 transitions. [2022-12-14 14:34:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:34:51,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-12-14 14:34:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:51,964 INFO L225 Difference]: With dead ends: 1825 [2022-12-14 14:34:51,964 INFO L226 Difference]: Without dead ends: 1825 [2022-12-14 14:34:51,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:51,965 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 444 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:51,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 14:34:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2022-12-14 14:34:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1370. [2022-12-14 14:34:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 846 states have (on average 1.9184397163120568) internal successors, (1623), 1364 states have internal predecessors, (1623), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1639 transitions. [2022-12-14 14:34:51,983 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1639 transitions. Word has length 16 [2022-12-14 14:34:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:51,983 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1639 transitions. [2022-12-14 14:34:51,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-14 14:34:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1639 transitions. [2022-12-14 14:34:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:34:51,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:51,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:51,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 14:34:52,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:52,185 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 14:34:52,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:52,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933296324] [2022-12-14 14:34:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:52,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:52,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:52,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:52,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 14:34:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:34:52,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:52,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:52,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:52,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933296324] [2022-12-14 14:34:52,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933296324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:52,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:52,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:52,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790322542] [2022-12-14 14:34:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:52,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:52,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:52,372 INFO L87 Difference]: Start difference. First operand 1370 states and 1639 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 14:34:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:52,390 INFO L93 Difference]: Finished difference Result 1310 states and 1553 transitions. [2022-12-14 14:34:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:52,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-12-14 14:34:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:52,393 INFO L225 Difference]: With dead ends: 1310 [2022-12-14 14:34:52,393 INFO L226 Difference]: Without dead ends: 1310 [2022-12-14 14:34:52,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:52,393 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:52,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1167 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-12-14 14:34:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2022-12-14 14:34:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 810 states have (on average 1.8975308641975308) internal successors, (1537), 1304 states have internal predecessors, (1537), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1553 transitions. [2022-12-14 14:34:52,403 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1553 transitions. Word has length 18 [2022-12-14 14:34:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:52,403 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1553 transitions. [2022-12-14 14:34:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 14:34:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1553 transitions. [2022-12-14 14:34:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 14:34:52,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:52,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:52,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 14:34:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:52,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:52,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 14:34:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:52,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987429790] [2022-12-14 14:34:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:52,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:52,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:52,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:52,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 14:34:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:52,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:34:52,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:52,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:52,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:52,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987429790] [2022-12-14 14:34:52,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987429790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:52,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:52,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:34:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949031913] [2022-12-14 14:34:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:52,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:52,762 INFO L87 Difference]: Start difference. First operand 1310 states and 1553 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-14 14:34:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:52,817 INFO L93 Difference]: Finished difference Result 1282 states and 1497 transitions. [2022-12-14 14:34:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:34:52,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-12-14 14:34:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:52,819 INFO L225 Difference]: With dead ends: 1282 [2022-12-14 14:34:52,819 INFO L226 Difference]: Without dead ends: 1282 [2022-12-14 14:34:52,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:52,820 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1085 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:52,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2205 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-12-14 14:34:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2022-12-14 14:34:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 794 states have (on average 1.86272040302267) internal successors, (1479), 1274 states have internal predecessors, (1479), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1495 transitions. [2022-12-14 14:34:52,832 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1495 transitions. Word has length 20 [2022-12-14 14:34:52,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:52,832 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1495 transitions. [2022-12-14 14:34:52,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-14 14:34:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1495 transitions. [2022-12-14 14:34:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:34:52,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:52,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:52,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 14:34:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:53,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:53,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 14:34:53,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:53,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889580824] [2022-12-14 14:34:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:53,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:53,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:53,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:53,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 14:34:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:53,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:34:53,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:53,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 14:34:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:53,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:53,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:53,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889580824] [2022-12-14 14:34:53,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889580824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:53,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:53,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299026275] [2022-12-14 14:34:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:53,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:53,249 INFO L87 Difference]: Start difference. First operand 1280 states and 1495 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 14:34:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:55,323 INFO L93 Difference]: Finished difference Result 1879 states and 2228 transitions. [2022-12-14 14:34:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:34:55,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-12-14 14:34:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:55,327 INFO L225 Difference]: With dead ends: 1879 [2022-12-14 14:34:55,328 INFO L226 Difference]: Without dead ends: 1879 [2022-12-14 14:34:55,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:55,328 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1764 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:55,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1269 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 14:34:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-12-14 14:34:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1276. [2022-12-14 14:34:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 794 states have (on average 1.8526448362720402) internal successors, (1471), 1270 states have internal predecessors, (1471), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1487 transitions. [2022-12-14 14:34:55,339 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1487 transitions. Word has length 34 [2022-12-14 14:34:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:55,340 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1487 transitions. [2022-12-14 14:34:55,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 14:34:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1487 transitions. [2022-12-14 14:34:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:34:55,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:55,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:55,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 14:34:55,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:55,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 14:34:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:55,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715411681] [2022-12-14 14:34:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:55,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:55,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:55,545 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:55,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 14:34:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:55,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:34:55,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:55,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:34:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:55,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:55,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:55,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715411681] [2022-12-14 14:34:55,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715411681] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:55,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:55,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:55,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512698960] [2022-12-14 14:34:55,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:55,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:55,816 INFO L87 Difference]: Start difference. First operand 1276 states and 1487 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 14:34:59,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:59,087 INFO L93 Difference]: Finished difference Result 2007 states and 2335 transitions. [2022-12-14 14:34:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:34:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-12-14 14:34:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:59,091 INFO L225 Difference]: With dead ends: 2007 [2022-12-14 14:34:59,091 INFO L226 Difference]: Without dead ends: 2007 [2022-12-14 14:34:59,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:59,091 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1230 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:59,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2576 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-14 14:34:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-12-14 14:34:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1272. [2022-12-14 14:34:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 794 states have (on average 1.8425692695214106) internal successors, (1463), 1266 states have internal predecessors, (1463), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1479 transitions. [2022-12-14 14:34:59,102 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1479 transitions. Word has length 34 [2022-12-14 14:34:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:59,103 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1479 transitions. [2022-12-14 14:34:59,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 14:34:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1479 transitions. [2022-12-14 14:34:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 14:34:59,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:59,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:59,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 14:34:59,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:59,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 14:34:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:59,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614021592] [2022-12-14 14:34:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:59,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:59,311 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:59,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 14:34:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:59,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:34:59,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:59,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:59,535 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:59,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614021592] [2022-12-14 14:34:59,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614021592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:59,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:59,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:34:59,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939226738] [2022-12-14 14:34:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:59,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:34:59,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:34:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:34:59,536 INFO L87 Difference]: Start difference. First operand 1272 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:34:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:59,569 INFO L93 Difference]: Finished difference Result 1260 states and 1459 transitions. [2022-12-14 14:34:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:34:59,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 14:34:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:59,571 INFO L225 Difference]: With dead ends: 1260 [2022-12-14 14:34:59,571 INFO L226 Difference]: Without dead ends: 1260 [2022-12-14 14:34:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:34:59,572 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1054 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:59,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2183 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-12-14 14:34:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-12-14 14:34:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 782 states have (on average 1.8452685421994885) internal successors, (1443), 1254 states have internal predecessors, (1443), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:34:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1459 transitions. [2022-12-14 14:34:59,582 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1459 transitions. Word has length 52 [2022-12-14 14:34:59,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:59,582 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1459 transitions. [2022-12-14 14:34:59,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:34:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1459 transitions. [2022-12-14 14:34:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 14:34:59,583 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:59,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:59,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 14:34:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:59,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:34:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 14:34:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:59,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772244010] [2022-12-14 14:34:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:59,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:34:59,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:59,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:34:59,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 14:35:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:00,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 14:35:00,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:00,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 14:35:00,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:35:00,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:35:00,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:35:00,409 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 14:35:00,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 14:35:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:00,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:35:00,421 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:35:00,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772244010] [2022-12-14 14:35:00,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772244010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:35:00,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:35:00,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:35:00,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428190583] [2022-12-14 14:35:00,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:35:00,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:35:00,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:35:00,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:35:00,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:35:00,423 INFO L87 Difference]: Start difference. First operand 1260 states and 1459 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 14:35:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:35:02,661 INFO L93 Difference]: Finished difference Result 1608 states and 1924 transitions. [2022-12-14 14:35:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:35:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-12-14 14:35:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:35:02,665 INFO L225 Difference]: With dead ends: 1608 [2022-12-14 14:35:02,665 INFO L226 Difference]: Without dead ends: 1608 [2022-12-14 14:35:02,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:35:02,665 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1754 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:35:02,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 791 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 14:35:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-12-14 14:35:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1190. [2022-12-14 14:35:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 750 states have (on average 1.7853333333333334) internal successors, (1339), 1184 states have internal predecessors, (1339), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:35:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1355 transitions. [2022-12-14 14:35:02,675 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1355 transitions. Word has length 60 [2022-12-14 14:35:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:35:02,675 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1355 transitions. [2022-12-14 14:35:02,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 14:35:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1355 transitions. [2022-12-14 14:35:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:35:02,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:35:02,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:35:02,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-14 14:35:02,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:02,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:35:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:35:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 14:35:02,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:35:02,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446746890] [2022-12-14 14:35:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:35:02,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:35:02,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:35:02,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 14:35:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:03,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:35:03,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:03,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 14:35:03,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:35:03,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 14:35:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:03,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:35:03,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:35:03,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446746890] [2022-12-14 14:35:03,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446746890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:35:03,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:35:03,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:35:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402539858] [2022-12-14 14:35:03,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:35:03,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:35:03,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:35:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:35:03,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:35:03,152 INFO L87 Difference]: Start difference. First operand 1190 states and 1355 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 14:35:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:35:05,331 INFO L93 Difference]: Finished difference Result 1189 states and 1354 transitions. [2022-12-14 14:35:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:35:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-12-14 14:35:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:35:05,335 INFO L225 Difference]: With dead ends: 1189 [2022-12-14 14:35:05,335 INFO L226 Difference]: Without dead ends: 1189 [2022-12-14 14:35:05,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:35:05,336 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 4 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:35:05,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2676 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 14:35:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-12-14 14:35:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2022-12-14 14:35:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 750 states have (on average 1.784) internal successors, (1338), 1183 states have internal predecessors, (1338), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:35:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1354 transitions. [2022-12-14 14:35:05,345 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1354 transitions. Word has length 65 [2022-12-14 14:35:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:35:05,346 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1354 transitions. [2022-12-14 14:35:05,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 14:35:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1354 transitions. [2022-12-14 14:35:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:35:05,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:35:05,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:35:05,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 14:35:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:05,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:35:05,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:35:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 14:35:05,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:35:05,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761183186] [2022-12-14 14:35:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:35:05,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:05,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:35:05,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:35:05,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 14:35:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:05,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:35:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:05,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:35:05,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:35:05,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:35:05,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-14 14:35:05,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 14:35:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:05,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:35:05,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:35:05,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761183186] [2022-12-14 14:35:05,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761183186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:35:05,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:35:05,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:35:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390527194] [2022-12-14 14:35:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:35:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:35:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:35:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:35:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:35:05,833 INFO L87 Difference]: Start difference. First operand 1189 states and 1354 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 14:35:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:35:08,745 INFO L93 Difference]: Finished difference Result 1188 states and 1353 transitions. [2022-12-14 14:35:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:35:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-12-14 14:35:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:35:08,747 INFO L225 Difference]: With dead ends: 1188 [2022-12-14 14:35:08,747 INFO L226 Difference]: Without dead ends: 1188 [2022-12-14 14:35:08,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:35:08,748 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:35:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2729 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 14:35:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-12-14 14:35:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2022-12-14 14:35:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 749 states have (on average 1.7850467289719627) internal successors, (1337), 1182 states have internal predecessors, (1337), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:35:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1353 transitions. [2022-12-14 14:35:08,756 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1353 transitions. Word has length 65 [2022-12-14 14:35:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:35:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1353 transitions. [2022-12-14 14:35:08,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 14:35:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1353 transitions. [2022-12-14 14:35:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:35:08,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:35:08,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:35:08,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-14 14:35:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:08,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:35:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:35:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1808778577, now seen corresponding path program 1 times [2022-12-14 14:35:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:35:08,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875731028] [2022-12-14 14:35:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:35:08,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:35:08,959 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:35:08,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 14:35:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:09,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:35:09,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:09,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:35:09,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:35:09,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875731028] [2022-12-14 14:35:09,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875731028] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:35:09,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:35:09,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:35:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119469228] [2022-12-14 14:35:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:35:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:35:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:35:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:35:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:35:09,189 INFO L87 Difference]: Start difference. First operand 1188 states and 1353 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 14:35:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:35:09,226 INFO L93 Difference]: Finished difference Result 1191 states and 1357 transitions. [2022-12-14 14:35:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:35:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-12-14 14:35:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:35:09,231 INFO L225 Difference]: With dead ends: 1191 [2022-12-14 14:35:09,231 INFO L226 Difference]: Without dead ends: 1191 [2022-12-14 14:35:09,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:35:09,232 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:35:09,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:35:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-12-14 14:35:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2022-12-14 14:35:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 751 states have (on average 1.7842876165113182) internal successors, (1340), 1185 states have internal predecessors, (1340), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 14:35:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1357 transitions. [2022-12-14 14:35:09,243 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1357 transitions. Word has length 73 [2022-12-14 14:35:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:35:09,243 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1357 transitions. [2022-12-14 14:35:09,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 14:35:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1357 transitions. [2022-12-14 14:35:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 14:35:09,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:35:09,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:35:09,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 14:35:09,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:09,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:35:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:35:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash 483111072, now seen corresponding path program 1 times [2022-12-14 14:35:09,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:35:09,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348751222] [2022-12-14 14:35:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:35:09,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:35:09,451 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:35:09,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 14:35:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:09,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:35:09,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:09,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:35:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:09,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:35:09,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348751222] [2022-12-14 14:35:09,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348751222] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:35:09,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1596552368] [2022-12-14 14:35:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:35:09,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:35:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:35:09,850 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:35:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 14:35:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:10,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:35:10,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:10,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:35:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:10,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1596552368] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:35:10,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942931575] [2022-12-14 14:35:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:35:10,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:35:10,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:35:10,304 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:35:10,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 14:35:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:35:10,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:35:10,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:10,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:35:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:10,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942931575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:35:10,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:35:10,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 14:35:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036061824] [2022-12-14 14:35:10,569 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:35:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:35:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:35:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:35:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:35:10,570 INFO L87 Difference]: Start difference. First operand 1191 states and 1357 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 14:35:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:35:10,719 INFO L93 Difference]: Finished difference Result 1203 states and 1374 transitions. [2022-12-14 14:35:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 14:35:10,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-12-14 14:35:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:35:10,721 INFO L225 Difference]: With dead ends: 1203 [2022-12-14 14:35:10,721 INFO L226 Difference]: Without dead ends: 1203 [2022-12-14 14:35:10,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:35:10,722 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 12 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:35:10,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4168 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:35:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-12-14 14:35:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-12-14 14:35:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 760 states have (on average 1.7828947368421053) internal successors, (1355), 1194 states have internal predecessors, (1355), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 14:35:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1372 transitions. [2022-12-14 14:35:10,733 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1372 transitions. Word has length 74 [2022-12-14 14:35:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:35:10,733 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1372 transitions. [2022-12-14 14:35:10,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 14:35:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1372 transitions. [2022-12-14 14:35:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 14:35:10,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:35:10,734 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:35:10,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 14:35:10,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-12-14 14:35:11,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-12-14 14:35:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:11,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:35:11,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:35:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1705595153, now seen corresponding path program 2 times [2022-12-14 14:35:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:35:11,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510689801] [2022-12-14 14:35:11,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:35:11,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:35:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:35:11,341 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:35:11,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 14:35:11,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:35:11,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:35:11,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:35:11,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:11,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:35:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:11,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:35:11,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510689801] [2022-12-14 14:35:11,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510689801] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:35:11,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1426125733] [2022-12-14 14:35:11,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:35:11,915 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:35:11,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:35:11,916 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:35:11,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-12-14 14:35:13,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:35:13,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:35:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:35:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:13,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:35:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:35:13,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1426125733] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:35:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557328232] [2022-12-14 14:35:13,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:35:13,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:35:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:35:13,324 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:35:13,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 14:35:47,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:35:47,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:35:47,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 14:35:47,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:35:47,168 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 14:35:47,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 14:35:47,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:35:47,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:35:47,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:35:47,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 14:35:47,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:35:47,436 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650)))) is different from true [2022-12-14 14:35:47,494 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 14:35:47,503 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 14:35:47,535 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:35:47,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 14:35:47,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 14:35:47,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-14 14:35:47,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 14:35:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 14:35:47,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:35:47,939 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-12-14 14:35:47,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557328232] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:35:47,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 14:35:47,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 14:35:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910959049] [2022-12-14 14:35:47,945 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 14:35:47,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:35:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:35:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:35:47,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=460, Unknown=15, NotChecked=188, Total=756 [2022-12-14 14:35:47,946 INFO L87 Difference]: Start difference. First operand 1201 states and 1372 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 14:35:50,154 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 14:35:54,590 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 14:36:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:36:12,293 INFO L93 Difference]: Finished difference Result 2758 states and 3315 transitions. [2022-12-14 14:36:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 14:36:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-14 14:36:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:36:12,298 INFO L225 Difference]: With dead ends: 2758 [2022-12-14 14:36:12,298 INFO L226 Difference]: Without dead ends: 2746 [2022-12-14 14:36:12,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=459, Invalid=2696, Unknown=61, NotChecked=690, Total=3906 [2022-12-14 14:36:12,299 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2022 mSDsluCounter, 11840 mSDsCounter, 0 mSdLazyCounter, 11751 mSolverCounterSat, 40 mSolverCounterUnsat, 616 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 12767 SdHoareTripleChecker+Invalid, 19590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11751 IncrementalHoareTripleChecker+Invalid, 616 IncrementalHoareTripleChecker+Unknown, 7183 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:36:12,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 12767 Invalid, 19590 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 11751 Invalid, 616 Unknown, 7183 Unchecked, 18.4s Time] [2022-12-14 14:36:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-12-14 14:36:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1217. [2022-12-14 14:36:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 775 states have (on average 1.7703225806451612) internal successors, (1372), 1209 states have internal predecessors, (1372), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-14 14:36:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1390 transitions. [2022-12-14 14:36:12,315 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1390 transitions. Word has length 77 [2022-12-14 14:36:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:36:12,315 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1390 transitions. [2022-12-14 14:36:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 14:36:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1390 transitions. [2022-12-14 14:36:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 14:36:12,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:36:12,316 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:36:12,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-12-14 14:36:12,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-14 14:36:12,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-14 14:36:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:36:12,918 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:36:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:36:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221554, now seen corresponding path program 1 times [2022-12-14 14:36:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:36:12,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413136832] [2022-12-14 14:36:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:36:12,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:36:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:36:12,925 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:36:12,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 14:36:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:36:13,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 14:36:13,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:36:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:13,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:36:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:13,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:36:13,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413136832] [2022-12-14 14:36:13,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413136832] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:36:13,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1863786325] [2022-12-14 14:36:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:36:13,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:36:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:36:13,787 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:36:13,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-14 14:36:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:36:14,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 14:36:14,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:36:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:14,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:36:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:14,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1863786325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:36:14,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549591302] [2022-12-14 14:36:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:36:14,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:36:14,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:36:14,523 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:36:14,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 14:36:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:36:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 14:36:14,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:36:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:14,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:36:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:15,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549591302] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:36:15,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:36:15,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-12-14 14:36:15,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141650349] [2022-12-14 14:36:15,777 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:36:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 14:36:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:36:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 14:36:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 14:36:15,779 INFO L87 Difference]: Start difference. First operand 1217 states and 1390 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 14:36:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:36:18,501 INFO L93 Difference]: Finished difference Result 1254 states and 1438 transitions. [2022-12-14 14:36:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 14:36:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2022-12-14 14:36:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:36:18,506 INFO L225 Difference]: With dead ends: 1254 [2022-12-14 14:36:18,506 INFO L226 Difference]: Without dead ends: 1246 [2022-12-14 14:36:18,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 14:36:18,509 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 48 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:36:18,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16755 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 14:36:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-12-14 14:36:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1228. [2022-12-14 14:36:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 787 states have (on average 1.7611181702668361) internal successors, (1386), 1221 states have internal predecessors, (1386), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 14:36:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1403 transitions. [2022-12-14 14:36:18,520 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1403 transitions. Word has length 83 [2022-12-14 14:36:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:36:18,520 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1403 transitions. [2022-12-14 14:36:18,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 14:36:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1403 transitions. [2022-12-14 14:36:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 14:36:18,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:36:18,521 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:36:18,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-12-14 14:36:18,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-14 14:36:18,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2022-12-14 14:36:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:36:19,122 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 14:36:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:36:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1527361039, now seen corresponding path program 3 times [2022-12-14 14:36:19,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:36:19,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897872838] [2022-12-14 14:36:19,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:36:19,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:36:19,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:36:19,129 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:36:19,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-14 14:36:20,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 14:36:20,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:36:20,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 14:36:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:36:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:20,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:36:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:22,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:36:22,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897872838] [2022-12-14 14:36:22,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897872838] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:36:22,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [77768492] [2022-12-14 14:36:22,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:36:22,789 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:36:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:36:22,790 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:36:22,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-12-14 14:36:51,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 14:36:51,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:36:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 14:36:51,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:36:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:51,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:36:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:36:51,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [77768492] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:36:51,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904094322] [2022-12-14 14:36:51,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:36:51,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:36:51,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:36:51,711 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:36:51,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd1c0b5-4714-40be-8943-cf54f927ec0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process