./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- 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-8393723 [2022-11-19 08:17:38,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:17:38,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:17:39,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:17:39,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:17:39,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:17:39,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:17:39,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:17:39,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:17:39,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:17:39,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:17:39,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:17:39,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:17:39,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:17:39,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:17:39,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:17:39,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:17:39,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:17:39,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:17:39,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:17:39,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:17:39,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:17:39,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:17:39,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:17:39,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:17:39,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:17:39,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:17:39,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:17:39,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:17:39,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:17:39,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:17:39,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:17:39,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:17:39,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:17:39,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:17:39,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:17:39,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:17:39,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:17:39,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:17:39,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:17:39,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:17:39,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 08:17:39,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:17:39,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:17:39,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:17:39,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:17:39,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:17:39,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:17:39,167 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:17:39,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:17:39,167 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:17:39,168 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:17:39,168 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:17:39,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:17:39,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:17:39,168 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:17:39,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:17:39,169 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:17:39,169 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:17:39,169 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:17:39,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:17:39,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:17:39,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:17:39,175 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:17:39,175 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:17:39,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:17:39,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:17:39,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:17:39,176 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:17:39,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:17:39,178 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:17:39,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:17:39,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:17:39,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:17:39,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:17:39,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:17:39,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:17:39,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:39,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:17:39,181 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:17:39,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:17:39,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:17:39,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:17:39,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:17:39,182 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2022-11-19 08:17:39,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:17:39,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:17:39,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:17:39,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:17:39,619 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:17:39,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2022-11-19 08:17:39,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/4601a5243/77cc5fce73574956859847fb5441b6c1/FLAG115acb19f [2022-11-19 08:17:40,489 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:17:40,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2022-11-19 08:17:40,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/4601a5243/77cc5fce73574956859847fb5441b6c1/FLAG115acb19f [2022-11-19 08:17:40,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/4601a5243/77cc5fce73574956859847fb5441b6c1 [2022-11-19 08:17:40,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:17:40,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:17:40,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:40,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:17:40,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:17:40,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:40" (1/1) ... [2022-11-19 08:17:40,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36673b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:40, skipping insertion in model container [2022-11-19 08:17:40,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:40" (1/1) ... [2022-11-19 08:17:40,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:17:40,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:17:41,313 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2022-11-19 08:17:41,491 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2022-11-19 08:17:41,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:41,520 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) [2022-11-19 08:17:41,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65a0d763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:41, skipping insertion in model container [2022-11-19 08:17:41,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:41,521 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 08:17:41,523 INFO L158 Benchmark]: Toolchain (without parser) took 875.66ms. Allocated memory is still 100.7MB. Free memory was 65.2MB in the beginning and 67.4MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:17:41,523 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:17:41,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 864.52ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 67.4MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:17:41,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 864.52ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 67.4MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- 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-8393723 [2022-11-19 08:17:43,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:17:43,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:17:43,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:17:43,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:17:43,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:17:43,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:17:43,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:17:43,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:17:43,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:17:43,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:17:43,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:17:43,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:17:43,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:17:43,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:17:43,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:17:43,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:17:43,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:17:43,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:17:43,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:17:43,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:17:43,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:17:43,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:17:43,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:17:43,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:17:43,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:17:43,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:17:43,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:17:43,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:17:43,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:17:43,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:17:43,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:17:43,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:17:43,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:17:43,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:17:43,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:17:43,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:17:43,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:17:43,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:17:43,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:17:43,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:17:43,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 08:17:43,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:17:43,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:17:43,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:17:43,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:17:43,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:17:43,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:17:43,872 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:17:43,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:17:43,872 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:17:43,873 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:17:43,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:17:43,873 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:17:43,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:17:43,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:17:43,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:17:43,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:17:43,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:17:43,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:17:43,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:17:43,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:17:43,877 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:17:43,877 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:17:43,878 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:17:43,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:17:43,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:17:43,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:17:43,879 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:17:43,879 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:17:43,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:17:43,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:17:43,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:17:43,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:17:43,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:43,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:17:43,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:17:43,882 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:17:43,882 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:17:43,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:17:43,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:17:43,883 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2022-11-19 08:17:44,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:17:44,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:17:44,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:17:44,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:17:44,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:17:44,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2022-11-19 08:17:44,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/83ace94a9/9508542f63d9400bae422ece9bed08bc/FLAG87ed03360 [2022-11-19 08:17:45,216 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:17:45,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2022-11-19 08:17:45,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/83ace94a9/9508542f63d9400bae422ece9bed08bc/FLAG87ed03360 [2022-11-19 08:17:45,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/data/83ace94a9/9508542f63d9400bae422ece9bed08bc [2022-11-19 08:17:45,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:17:45,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:17:45,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:45,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:17:45,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:17:45,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:45" (1/1) ... [2022-11-19 08:17:45,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6101784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:45, skipping insertion in model container [2022-11-19 08:17:45,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:45" (1/1) ... [2022-11-19 08:17:45,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:17:45,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:17:46,110 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2022-11-19 08:17:46,310 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2022-11-19 08:17:46,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:46,338 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 08:17:46,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:17:46,371 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2022-11-19 08:17:46,436 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2022-11-19 08:17:46,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:46,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:17:46,515 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2022-11-19 08:17:46,555 WARN L234 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_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2022-11-19 08:17:46,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:46,637 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:17:46,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46 WrapperNode [2022-11-19 08:17:46,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:46,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:46,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:17:46,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:17:46,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,732 INFO L138 Inliner]: procedures = 211, calls = 286, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1050 [2022-11-19 08:17:46,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:46,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:17:46,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:17:46,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:17:46,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:17:46,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:17:46,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:17:46,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:17:46,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (1/1) ... [2022-11-19 08:17:46,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:46,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:46,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:17:46,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:17:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 08:17:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 08:17:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:17:46,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:17:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:17:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 08:17:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:17:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:17:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 08:17:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:17:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 08:17:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 08:17:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:17:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:17:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:17:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:17:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:17:47,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:17:47,328 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:17:47,333 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-19 08:17:52,854 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:17:52,881 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:17:52,891 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 08:17:52,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:52 BoogieIcfgContainer [2022-11-19 08:17:52,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:17:52,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:17:52,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:17:52,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:17:52,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:17:45" (1/3) ... [2022-11-19 08:17:52,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e7a4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:52, skipping insertion in model container [2022-11-19 08:17:52,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:46" (2/3) ... [2022-11-19 08:17:52,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e7a4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:52, skipping insertion in model container [2022-11-19 08:17:52,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:52" (3/3) ... [2022-11-19 08:17:52,912 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2022-11-19 08:17:52,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:17:52,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-11-19 08:17:53,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:17:53,032 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;@172019cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:17:53,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-11-19 08:17:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 536 states have (on average 2.236940298507463) internal successors, (1199), 1074 states have internal predecessors, (1199), 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) [2022-11-19 08:17:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:17:53,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:53,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:17:53,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:17:53,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-19 08:17:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:17:53,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035230006] [2022-11-19 08:17:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:53,076 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 [2022-11-19 08:17:53,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:17:53,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:17:53,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:17:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:53,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:17:53,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:17:53,405 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 [2022-11-19 08:17:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:53,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:17:53,439 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:17:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035230006] [2022-11-19 08:17:53,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035230006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:53,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:53,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:17:53,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93306244] [2022-11-19 08:17:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:17:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:17:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:17:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:17:53,508 INFO L87 Difference]: Start difference. First operand has 1080 states, 536 states have (on average 2.236940298507463) internal successors, (1199), 1074 states have internal predecessors, (1199), 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) [2022-11-19 08:17:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:56,345 INFO L93 Difference]: Finished difference Result 1244 states and 1319 transitions. [2022-11-19 08:17:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:17:56,349 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 [2022-11-19 08:17:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:56,369 INFO L225 Difference]: With dead ends: 1244 [2022-11-19 08:17:56,369 INFO L226 Difference]: Without dead ends: 1242 [2022-11-19 08:17:56,371 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 [2022-11-19 08:17:56,376 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 993 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:56,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 803 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 08:17:56,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-11-19 08:17:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1064. [2022-11-19 08:17:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 536 states have (on average 2.080223880597015) internal successors, (1115), 1058 states have internal predecessors, (1115), 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) [2022-11-19 08:17:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1131 transitions. [2022-11-19 08:17:56,461 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1131 transitions. Word has length 3 [2022-11-19 08:17:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:56,462 INFO L495 AbstractCegarLoop]: Abstraction has 1064 states and 1131 transitions. [2022-11-19 08:17:56,462 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) [2022-11-19 08:17:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1131 transitions. [2022-11-19 08:17:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:17:56,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:56,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:17:56,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:17:56,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:17:56,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:17:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-19 08:17:56,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:17:56,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886736227] [2022-11-19 08:17:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:56,679 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 [2022-11-19 08:17:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:17:56,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:17:56,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:17:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:56,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:17:56,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:17:56,875 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 [2022-11-19 08:17:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:56,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:17:56,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:17:56,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886736227] [2022-11-19 08:17:56,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886736227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:56,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:56,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:17:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191638423] [2022-11-19 08:17:56,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:56,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:17:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:17:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:17:56,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:17:56,907 INFO L87 Difference]: Start difference. First operand 1064 states and 1131 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) [2022-11-19 08:18:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:01,214 INFO L93 Difference]: Finished difference Result 1482 states and 1591 transitions. [2022-11-19 08:18:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:01,214 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 [2022-11-19 08:18:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:01,224 INFO L225 Difference]: With dead ends: 1482 [2022-11-19 08:18:01,224 INFO L226 Difference]: Without dead ends: 1482 [2022-11-19 08:18:01,225 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 [2022-11-19 08:18:01,230 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 450 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:01,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1536 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 08:18:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-11-19 08:18:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1196. [2022-11-19 08:18:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 664 states have (on average 2.0376506024096384) internal successors, (1353), 1190 states have internal predecessors, (1353), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1379 transitions. [2022-11-19 08:18:01,277 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1379 transitions. Word has length 3 [2022-11-19 08:18:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:01,278 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1379 transitions. [2022-11-19 08:18:01,278 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) [2022-11-19 08:18:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1379 transitions. [2022-11-19 08:18:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:18:01,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:01,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:01,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:01,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:01,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-19 08:18:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:01,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775144921] [2022-11-19 08:18:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:01,496 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 [2022-11-19 08:18:01,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:01,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:01,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:01,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:18:01,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:01,700 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 [2022-11-19 08:18:01,707 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 [2022-11-19 08:18:01,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:18:01,814 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 [2022-11-19 08:18:01,841 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 08:18:01,841 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 [2022-11-19 08:18:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:01,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:01,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:01,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775144921] [2022-11-19 08:18:01,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775144921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:01,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:01,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670090946] [2022-11-19 08:18:01,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:01,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:01,880 INFO L87 Difference]: Start difference. First operand 1196 states and 1379 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) [2022-11-19 08:18:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:06,075 INFO L93 Difference]: Finished difference Result 1363 states and 1554 transitions. [2022-11-19 08:18:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:06,076 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 [2022-11-19 08:18:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:06,082 INFO L225 Difference]: With dead ends: 1363 [2022-11-19 08:18:06,082 INFO L226 Difference]: Without dead ends: 1363 [2022-11-19 08:18:06,082 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 [2022-11-19 08:18:06,084 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1267 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:06,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 471 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-19 08:18:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-11-19 08:18:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1053. [2022-11-19 08:18:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 536 states have (on average 2.0578358208955225) internal successors, (1103), 1047 states have internal predecessors, (1103), 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) [2022-11-19 08:18:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1119 transitions. [2022-11-19 08:18:06,114 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1119 transitions. Word has length 7 [2022-11-19 08:18:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:06,115 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1119 transitions. [2022-11-19 08:18:06,115 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) [2022-11-19 08:18:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1119 transitions. [2022-11-19 08:18:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:18:06,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:06,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:06,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:06,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-19 08:18:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:06,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652902102] [2022-11-19 08:18:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:06,333 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 [2022-11-19 08:18:06,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:06,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:06,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:06,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:18:06,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:06,498 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 [2022-11-19 08:18:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:06,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:06,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:06,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652902102] [2022-11-19 08:18:06,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652902102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:06,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:06,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:18:06,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256950309] [2022-11-19 08:18:06,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:06,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:06,517 INFO L87 Difference]: Start difference. First operand 1053 states and 1119 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) [2022-11-19 08:18:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:09,205 INFO L93 Difference]: Finished difference Result 1229 states and 1326 transitions. [2022-11-19 08:18:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:09,207 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 [2022-11-19 08:18:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:09,212 INFO L225 Difference]: With dead ends: 1229 [2022-11-19 08:18:09,212 INFO L226 Difference]: Without dead ends: 1229 [2022-11-19 08:18:09,212 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 [2022-11-19 08:18:09,214 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 812 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:09,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1181 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 08:18:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-11-19 08:18:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1006. [2022-11-19 08:18:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 536 states have (on average 1.9701492537313432) internal successors, (1056), 1000 states have internal predecessors, (1056), 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) [2022-11-19 08:18:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1072 transitions. [2022-11-19 08:18:09,240 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1072 transitions. Word has length 8 [2022-11-19 08:18:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:09,241 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1072 transitions. [2022-11-19 08:18:09,241 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) [2022-11-19 08:18:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1072 transitions. [2022-11-19 08:18:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:18:09,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:09,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:09,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:09,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-19 08:18:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285960805] [2022-11-19 08:18:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:09,452 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 [2022-11-19 08:18:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:09,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:09,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:09,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:18:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:09,626 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 [2022-11-19 08:18:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:09,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:09,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:09,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285960805] [2022-11-19 08:18:09,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285960805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:09,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:09,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:18:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796498804] [2022-11-19 08:18:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:09,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:09,669 INFO L87 Difference]: Start difference. First operand 1006 states and 1072 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) [2022-11-19 08:18:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:13,045 INFO L93 Difference]: Finished difference Result 1294 states and 1394 transitions. [2022-11-19 08:18:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:13,046 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 [2022-11-19 08:18:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:13,051 INFO L225 Difference]: With dead ends: 1294 [2022-11-19 08:18:13,051 INFO L226 Difference]: Without dead ends: 1294 [2022-11-19 08:18:13,051 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 [2022-11-19 08:18:13,052 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 499 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:13,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1537 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-19 08:18:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-11-19 08:18:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1028. [2022-11-19 08:18:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 568 states have (on average 1.9577464788732395) internal successors, (1112), 1022 states have internal predecessors, (1112), 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) [2022-11-19 08:18:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1128 transitions. [2022-11-19 08:18:13,077 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1128 transitions. Word has length 8 [2022-11-19 08:18:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:13,078 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1128 transitions. [2022-11-19 08:18:13,078 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) [2022-11-19 08:18:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1128 transitions. [2022-11-19 08:18:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:18:13,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:13,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:13,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:13,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:13,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:13,296 INFO L85 PathProgramCache]: Analyzing trace with hash 693660251, now seen corresponding path program 1 times [2022-11-19 08:18:13,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:13,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385208441] [2022-11-19 08:18:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:13,296 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 [2022-11-19 08:18:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:13,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:13,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:13,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:18:13,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:13,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:13,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:13,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385208441] [2022-11-19 08:18:13,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385208441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:13,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:13,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048215849] [2022-11-19 08:18:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:13,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:13,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:13,548 INFO L87 Difference]: Start difference. First operand 1028 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-11-19 08:18:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:13,945 INFO L93 Difference]: Finished difference Result 1505 states and 1650 transitions. [2022-11-19 08:18:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2022-11-19 08:18:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:13,952 INFO L225 Difference]: With dead ends: 1505 [2022-11-19 08:18:13,952 INFO L226 Difference]: Without dead ends: 1505 [2022-11-19 08:18:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:13,953 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 570 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 2034 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 08:18:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-11-19 08:18:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1212. [2022-11-19 08:18:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 747 states have (on average 1.8995983935742973) internal successors, (1419), 1206 states have internal predecessors, (1419), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1445 transitions. [2022-11-19 08:18:13,984 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1445 transitions. Word has length 11 [2022-11-19 08:18:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:13,985 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1445 transitions. [2022-11-19 08:18:13,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-11-19 08:18:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1445 transitions. [2022-11-19 08:18:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 08:18:13,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:13,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:13,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:14,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:14,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-19 08:18:14,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:14,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555495670] [2022-11-19 08:18:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:14,199 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 [2022-11-19 08:18:14,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:14,200 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:14,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:18:14,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:14,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:14,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:14,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555495670] [2022-11-19 08:18:14,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555495670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:14,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:14,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075416534] [2022-11-19 08:18:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:14,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:14,393 INFO L87 Difference]: Start difference. First operand 1212 states and 1445 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) [2022-11-19 08:18:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:14,433 INFO L93 Difference]: Finished difference Result 1366 states and 1585 transitions. [2022-11-19 08:18:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:14,433 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 [2022-11-19 08:18:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:14,441 INFO L225 Difference]: With dead ends: 1366 [2022-11-19 08:18:14,441 INFO L226 Difference]: Without dead ends: 1366 [2022-11-19 08:18:14,441 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 [2022-11-19 08:18:14,442 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 404 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2040 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 [2022-11-19 08:18:14,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 2040 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-19 08:18:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1152. [2022-11-19 08:18:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 711 states have (on average 1.8748241912798875) internal successors, (1333), 1146 states have internal predecessors, (1333), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1359 transitions. [2022-11-19 08:18:14,473 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1359 transitions. Word has length 13 [2022-11-19 08:18:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:14,474 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1359 transitions. [2022-11-19 08:18:14,474 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) [2022-11-19 08:18:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1359 transitions. [2022-11-19 08:18:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:18:14,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:14,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:14,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:14,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:14,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1752004392, now seen corresponding path program 1 times [2022-11-19 08:18:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:14,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477892742] [2022-11-19 08:18:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:14,689 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 [2022-11-19 08:18:14,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:14,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:14,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:14,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:18:14,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:14,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:18:14,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:18:14,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:18:14,924 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 [2022-11-19 08:18:14,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:18:14,994 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 [2022-11-19 08:18:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:15,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:15,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:15,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477892742] [2022-11-19 08:18:15,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477892742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:15,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:15,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:15,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981921648] [2022-11-19 08:18:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:15,013 INFO L87 Difference]: Start difference. First operand 1152 states and 1359 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:16,789 INFO L93 Difference]: Finished difference Result 1489 states and 1747 transitions. [2022-11-19 08:18:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:16,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 08:18:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:16,795 INFO L225 Difference]: With dead ends: 1489 [2022-11-19 08:18:16,795 INFO L226 Difference]: Without dead ends: 1489 [2022-11-19 08:18:16,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:16,796 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 343 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 2829 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:18:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-19 08:18:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1151. [2022-11-19 08:18:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 710 states have (on average 1.8746478873239436) internal successors, (1331), 1145 states have internal predecessors, (1331), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1357 transitions. [2022-11-19 08:18:16,827 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1357 transitions. Word has length 14 [2022-11-19 08:18:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:16,828 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1357 transitions. [2022-11-19 08:18:16,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:16,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1357 transitions. [2022-11-19 08:18:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:18:16,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:16,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:16,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:17,048 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-19 08:18:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:17,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982974908] [2022-11-19 08:18:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:17,049 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 [2022-11-19 08:18:17,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:17,050 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:17,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:17,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:18:17,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:17,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:17,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:17,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982974908] [2022-11-19 08:18:17,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982974908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:17,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:17,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416872008] [2022-11-19 08:18:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:17,305 INFO L87 Difference]: Start difference. First operand 1151 states and 1357 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) [2022-11-19 08:18:17,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:17,341 INFO L93 Difference]: Finished difference Result 1091 states and 1271 transitions. [2022-11-19 08:18:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:17,342 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 [2022-11-19 08:18:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:17,346 INFO L225 Difference]: With dead ends: 1091 [2022-11-19 08:18:17,347 INFO L226 Difference]: Without dead ends: 1091 [2022-11-19 08:18:17,347 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 [2022-11-19 08:18:17,348 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 941 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1004 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 [2022-11-19 08:18:17,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1004 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-11-19 08:18:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-11-19 08:18:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 674 states have (on average 1.8471810089020773) internal successors, (1245), 1085 states have internal predecessors, (1245), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1271 transitions. [2022-11-19 08:18:17,374 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1271 transitions. Word has length 18 [2022-11-19 08:18:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:17,375 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1271 transitions. [2022-11-19 08:18:17,375 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) [2022-11-19 08:18:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1271 transitions. [2022-11-19 08:18:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:18:17,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:17,376 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] [2022-11-19 08:18:17,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:17,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:17,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:17,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-19 08:18:17,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:17,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045660782] [2022-11-19 08:18:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:17,592 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 [2022-11-19 08:18:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:17,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:17,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:17,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:18:17,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:17,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:17,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:17,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045660782] [2022-11-19 08:18:17,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045660782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:17,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:17,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326113760] [2022-11-19 08:18:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:17,855 INFO L87 Difference]: Start difference. First operand 1091 states and 1271 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) [2022-11-19 08:18:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:17,954 INFO L93 Difference]: Finished difference Result 1063 states and 1215 transitions. [2022-11-19 08:18:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:17,955 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 [2022-11-19 08:18:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:17,959 INFO L225 Difference]: With dead ends: 1063 [2022-11-19 08:18:17,959 INFO L226 Difference]: Without dead ends: 1063 [2022-11-19 08:18:17,960 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 [2022-11-19 08:18:17,961 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 922 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:17,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1879 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:18:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-11-19 08:18:17,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2022-11-19 08:18:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 658 states have (on average 1.803951367781155) internal successors, (1187), 1055 states have internal predecessors, (1187), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1213 transitions. [2022-11-19 08:18:17,989 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1213 transitions. Word has length 20 [2022-11-19 08:18:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:17,990 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1213 transitions. [2022-11-19 08:18:17,990 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) [2022-11-19 08:18:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1213 transitions. [2022-11-19 08:18:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 08:18:17,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:17,993 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] [2022-11-19 08:18:18,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:18,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:18,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-19 08:18:18,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:18,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924720956] [2022-11-19 08:18:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:18,209 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 [2022-11-19 08:18:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:18,210 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:18,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:18,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:18:18,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:18,445 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 [2022-11-19 08:18:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:18,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:18,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:18,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924720956] [2022-11-19 08:18:18,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924720956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:18,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:18,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487295367] [2022-11-19 08:18:18,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:18,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:18,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:18,550 INFO L87 Difference]: Start difference. First operand 1061 states and 1213 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) [2022-11-19 08:18:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:21,267 INFO L93 Difference]: Finished difference Result 1512 states and 1749 transitions. [2022-11-19 08:18:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:18:21,268 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 [2022-11-19 08:18:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:21,273 INFO L225 Difference]: With dead ends: 1512 [2022-11-19 08:18:21,273 INFO L226 Difference]: Without dead ends: 1512 [2022-11-19 08:18:21,275 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 [2022-11-19 08:18:21,275 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1458 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:21,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1055 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 08:18:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2022-11-19 08:18:21,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1057. [2022-11-19 08:18:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 658 states have (on average 1.7917933130699089) internal successors, (1179), 1051 states have internal predecessors, (1179), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1205 transitions. [2022-11-19 08:18:21,302 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1205 transitions. Word has length 34 [2022-11-19 08:18:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:21,302 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1205 transitions. [2022-11-19 08:18:21,303 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) [2022-11-19 08:18:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1205 transitions. [2022-11-19 08:18:21,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 08:18:21,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:21,304 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] [2022-11-19 08:18:21,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:21,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:21,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-19 08:18:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:21,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219952260] [2022-11-19 08:18:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:21,517 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 [2022-11-19 08:18:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:21,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:21,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:21,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:18:21,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:21,759 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 [2022-11-19 08:18:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:22,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:22,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:22,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219952260] [2022-11-19 08:18:22,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219952260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:22,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:22,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:22,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721847779] [2022-11-19 08:18:22,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:22,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:22,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:22,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:22,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:22,014 INFO L87 Difference]: Start difference. First operand 1057 states and 1205 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) [2022-11-19 08:18:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:26,734 INFO L93 Difference]: Finished difference Result 1569 states and 1771 transitions. [2022-11-19 08:18:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:18:26,734 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 [2022-11-19 08:18:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:26,741 INFO L225 Difference]: With dead ends: 1569 [2022-11-19 08:18:26,741 INFO L226 Difference]: Without dead ends: 1569 [2022-11-19 08:18:26,741 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 [2022-11-19 08:18:26,742 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 928 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:26,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2156 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 08:18:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-11-19 08:18:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1053. [2022-11-19 08:18:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 658 states have (on average 1.7796352583586625) internal successors, (1171), 1047 states have internal predecessors, (1171), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1197 transitions. [2022-11-19 08:18:26,767 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1197 transitions. Word has length 34 [2022-11-19 08:18:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:26,767 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1197 transitions. [2022-11-19 08:18:26,768 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) [2022-11-19 08:18:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1197 transitions. [2022-11-19 08:18:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 08:18:26,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:26,769 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] [2022-11-19 08:18:26,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:26,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:26,982 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-19 08:18:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:26,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50557705] [2022-11-19 08:18:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:26,984 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 [2022-11-19 08:18:26,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:26,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:27,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:27,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:18:27,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:27,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:27,344 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50557705] [2022-11-19 08:18:27,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50557705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:27,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:27,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800959207] [2022-11-19 08:18:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:27,347 INFO L87 Difference]: Start difference. First operand 1053 states and 1197 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) [2022-11-19 08:18:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:27,411 INFO L93 Difference]: Finished difference Result 1041 states and 1177 transitions. [2022-11-19 08:18:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:27,412 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 [2022-11-19 08:18:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:27,416 INFO L225 Difference]: With dead ends: 1041 [2022-11-19 08:18:27,416 INFO L226 Difference]: Without dead ends: 1041 [2022-11-19 08:18:27,417 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 [2022-11-19 08:18:27,417 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 891 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1857 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 [2022-11-19 08:18:27,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1857 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-19 08:18:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1041. [2022-11-19 08:18:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 646 states have (on average 1.7817337461300309) internal successors, (1151), 1035 states have internal predecessors, (1151), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1177 transitions. [2022-11-19 08:18:27,438 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1177 transitions. Word has length 52 [2022-11-19 08:18:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:27,439 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1177 transitions. [2022-11-19 08:18:27,439 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) [2022-11-19 08:18:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1177 transitions. [2022-11-19 08:18:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 08:18:27,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:27,440 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] [2022-11-19 08:18:27,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:27,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-19 08:18:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:27,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793857023] [2022-11-19 08:18:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:27,656 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 [2022-11-19 08:18:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:27,658 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:27,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:28,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:18:28,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:28,144 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 [2022-11-19 08:18:28,152 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 [2022-11-19 08:18:28,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:18:28,801 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 [2022-11-19 08:18:28,815 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 08:18:28,815 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 [2022-11-19 08:18:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:28,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:28,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:28,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793857023] [2022-11-19 08:18:28,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793857023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:28,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:28,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:28,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943112511] [2022-11-19 08:18:28,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:28,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:28,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:28,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:28,841 INFO L87 Difference]: Start difference. First operand 1041 states and 1177 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) [2022-11-19 08:18:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:31,707 INFO L93 Difference]: Finished difference Result 1263 states and 1478 transitions. [2022-11-19 08:18:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:31,707 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 [2022-11-19 08:18:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:31,712 INFO L225 Difference]: With dead ends: 1263 [2022-11-19 08:18:31,713 INFO L226 Difference]: Without dead ends: 1263 [2022-11-19 08:18:31,713 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 [2022-11-19 08:18:31,714 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1425 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:31,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 696 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 08:18:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-11-19 08:18:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 971. [2022-11-19 08:18:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 614 states have (on average 1.705211726384365) internal successors, (1047), 965 states have internal predecessors, (1047), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1073 transitions. [2022-11-19 08:18:31,735 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1073 transitions. Word has length 60 [2022-11-19 08:18:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:31,736 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1073 transitions. [2022-11-19 08:18:31,736 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) [2022-11-19 08:18:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1073 transitions. [2022-11-19 08:18:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 08:18:31,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:31,737 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] [2022-11-19 08:18:31,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:31,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:31,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:31,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-19 08:18:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:31,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795885425] [2022-11-19 08:18:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:31,955 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 [2022-11-19 08:18:31,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:31,956 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:31,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:32,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:18:32,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:32,296 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 [2022-11-19 08:18:32,318 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 [2022-11-19 08:18:32,356 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 [2022-11-19 08:18:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:32,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:32,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:32,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795885425] [2022-11-19 08:18:32,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795885425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:32,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:32,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411184145] [2022-11-19 08:18:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:18:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:18:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:32,372 INFO L87 Difference]: Start difference. First operand 971 states and 1073 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) [2022-11-19 08:18:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:35,471 INFO L93 Difference]: Finished difference Result 970 states and 1072 transitions. [2022-11-19 08:18:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:18:35,471 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 [2022-11-19 08:18:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:35,475 INFO L225 Difference]: With dead ends: 970 [2022-11-19 08:18:35,475 INFO L226 Difference]: Without dead ends: 970 [2022-11-19 08:18:35,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:18:35,476 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 4 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:35,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2286 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 08:18:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-11-19 08:18:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2022-11-19 08:18:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 614 states have (on average 1.703583061889251) internal successors, (1046), 964 states have internal predecessors, (1046), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1072 transitions. [2022-11-19 08:18:35,496 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1072 transitions. Word has length 65 [2022-11-19 08:18:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:35,497 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1072 transitions. [2022-11-19 08:18:35,497 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) [2022-11-19 08:18:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1072 transitions. [2022-11-19 08:18:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 08:18:35,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:35,498 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] [2022-11-19 08:18:35,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:35,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-19 08:18:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:35,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492151755] [2022-11-19 08:18:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:35,712 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 [2022-11-19 08:18:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:35,713 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:35,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:36,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 08:18:36,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:36,120 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 [2022-11-19 08:18:36,178 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 [2022-11-19 08:18:36,188 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 [2022-11-19 08:18:36,250 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 [2022-11-19 08:18:36,258 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 [2022-11-19 08:18:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:36,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:36,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492151755] [2022-11-19 08:18:36,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492151755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:36,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:36,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014142244] [2022-11-19 08:18:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:36,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:18:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:18:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:36,279 INFO L87 Difference]: Start difference. First operand 970 states and 1072 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) [2022-11-19 08:18:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:40,352 INFO L93 Difference]: Finished difference Result 969 states and 1071 transitions. [2022-11-19 08:18:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:18:40,353 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 [2022-11-19 08:18:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:40,356 INFO L225 Difference]: With dead ends: 969 [2022-11-19 08:18:40,356 INFO L226 Difference]: Without dead ends: 969 [2022-11-19 08:18:40,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:18:40,356 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 2 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:40,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2322 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 08:18:40,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-11-19 08:18:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2022-11-19 08:18:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 613 states have (on average 1.704730831973899) internal successors, (1045), 963 states have internal predecessors, (1045), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:18:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1071 transitions. [2022-11-19 08:18:40,373 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1071 transitions. Word has length 65 [2022-11-19 08:18:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:40,373 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1071 transitions. [2022-11-19 08:18:40,374 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) [2022-11-19 08:18:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1071 transitions. [2022-11-19 08:18:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 08:18:40,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:40,375 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] [2022-11-19 08:18:40,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:40,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:40,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1175775441, now seen corresponding path program 1 times [2022-11-19 08:18:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:40,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458144203] [2022-11-19 08:18:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:40,590 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 [2022-11-19 08:18:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:40,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:40,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:40,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:18:40,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:40,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:18:40,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:40,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458144203] [2022-11-19 08:18:40,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458144203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:40,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:40,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:40,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834470616] [2022-11-19 08:18:40,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:40,934 INFO L87 Difference]: Start difference. First operand 969 states and 1071 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) [2022-11-19 08:18:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:40,985 INFO L93 Difference]: Finished difference Result 972 states and 1075 transitions. [2022-11-19 08:18:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:40,986 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 [2022-11-19 08:18:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:40,991 INFO L225 Difference]: With dead ends: 972 [2022-11-19 08:18:40,991 INFO L226 Difference]: Without dead ends: 972 [2022-11-19 08:18:40,991 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 [2022-11-19 08:18:40,992 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 2 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2638 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 [2022-11-19 08:18:40,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2638 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-19 08:18:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-11-19 08:18:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 615 states have (on average 1.7040650406504065) internal successors, (1048), 966 states have internal predecessors, (1048), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 08:18:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1075 transitions. [2022-11-19 08:18:41,012 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1075 transitions. Word has length 73 [2022-11-19 08:18:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:41,013 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1075 transitions. [2022-11-19 08:18:41,013 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) [2022-11-19 08:18:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1075 transitions. [2022-11-19 08:18:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 08:18:41,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:41,014 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] [2022-11-19 08:18:41,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:41,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:41,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1121958712, now seen corresponding path program 1 times [2022-11-19 08:18:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:41,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829988053] [2022-11-19 08:18:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:41,231 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 [2022-11-19 08:18:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:41,232 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:18:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:41,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:18:41,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:41,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:41,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:41,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829988053] [2022-11-19 08:18:41,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829988053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:41,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2128827002] [2022-11-19 08:18:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:41,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:18:41,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:18:41,768 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:18:41,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 08:18:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:42,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:18:42,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:42,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:42,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2128827002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:42,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9677039] [2022-11-19 08:18:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:42,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:42,463 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:18:42,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 08:18:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:42,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:18:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:42,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9677039] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:42,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:18:42,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-19 08:18:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077251584] [2022-11-19 08:18:42,872 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:18:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:18:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:18:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:18:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:18:42,874 INFO L87 Difference]: Start difference. First operand 972 states and 1075 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) [2022-11-19 08:18:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:43,087 INFO L93 Difference]: Finished difference Result 984 states and 1092 transitions. [2022-11-19 08:18:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 08:18:43,088 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 [2022-11-19 08:18:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:43,092 INFO L225 Difference]: With dead ends: 984 [2022-11-19 08:18:43,092 INFO L226 Difference]: Without dead ends: 984 [2022-11-19 08:18:43,092 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 [2022-11-19 08:18:43,093 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 23 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:43,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2641 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:18:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-11-19 08:18:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 982. [2022-11-19 08:18:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 624 states have (on average 1.703525641025641) internal successors, (1063), 975 states have internal predecessors, (1063), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 08:18:43,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1090 transitions. [2022-11-19 08:18:43,114 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1090 transitions. Word has length 74 [2022-11-19 08:18:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:43,115 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1090 transitions. [2022-11-19 08:18:43,115 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) [2022-11-19 08:18:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1090 transitions. [2022-11-19 08:18:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 08:18:43,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:43,120 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] [2022-11-19 08:18:43,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:43,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:43,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-19 08:18:43,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:18:43,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:18:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1956001135, now seen corresponding path program 2 times [2022-11-19 08:18:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:18:43,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485108247] [2022-11-19 08:18:43,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:18:43,722 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 [2022-11-19 08:18:43,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:18:43,724 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:18:43,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 (22)] Waiting until timeout for monitored process [2022-11-19 08:18:44,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:18:44,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:18:44,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:18:44,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:44,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:44,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:18:44,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485108247] [2022-11-19 08:18:44,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485108247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:44,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [883328249] [2022-11-19 08:18:44,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:18:44,653 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:18:44,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:18:44,655 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:18:44,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 08:18:46,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:18:46,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:18:46,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:18:46,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:18:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:46,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:18:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:46,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [883328249] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:18:46,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124099950] [2022-11-19 08:18:46,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:18:46,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:18:46,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:46,603 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:18:46,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 08:19:13,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:19:13,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:19:13,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 08:19:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:19:13,730 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 [2022-11-19 08:19:13,745 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 08:19:13,746 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 [2022-11-19 08:19:13,804 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 [2022-11-19 08:19:13,817 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 [2022-11-19 08:19:14,018 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 [2022-11-19 08:19:14,027 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 [2022-11-19 08:19:14,154 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1619 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1619))) (exists ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1618))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 08:19:14,184 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621))) (exists ((v_ArrVal_1620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1620))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 08:19:14,202 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 08:19:14,223 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1625 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1625) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1624) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 08:19:14,296 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:19:14,296 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 [2022-11-19 08:19:14,310 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 [2022-11-19 08:19:14,434 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 [2022-11-19 08:19:14,455 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 [2022-11-19 08:19:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-19 08:19:14,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:14,944 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2022-11-19 08:19:14,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124099950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:19:14,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-19 08:19:14,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-19 08:19:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245390729] [2022-11-19 08:19:14,957 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-19 08:19:14,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 08:19:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:19:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 08:19:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-11-19 08:19:14,958 INFO L87 Difference]: Start difference. First operand 982 states and 1090 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) [2022-11-19 08:19:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:19:25,256 INFO L93 Difference]: Finished difference Result 1262 states and 1460 transitions. [2022-11-19 08:19:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 08:19:25,257 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 [2022-11-19 08:19:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:19:25,260 INFO L225 Difference]: With dead ends: 1262 [2022-11-19 08:19:25,260 INFO L226 Difference]: Without dead ends: 1258 [2022-11-19 08:19:25,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=248, Invalid=1169, Unknown=9, NotChecked=380, Total=1806 [2022-11-19 08:19:25,262 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1440 mSDsluCounter, 4839 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 5425 SdHoareTripleChecker+Invalid, 8748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5034 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:19:25,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 5425 Invalid, 8748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 3681 Invalid, 0 Unknown, 5034 Unchecked, 9.1s Time] [2022-11-19 08:19:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-11-19 08:19:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 990. [2022-11-19 08:19:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 632 states have (on average 1.6993670886075949) internal successors, (1074), 983 states have internal predecessors, (1074), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 08:19:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1101 transitions. [2022-11-19 08:19:25,283 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1101 transitions. Word has length 77 [2022-11-19 08:19:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:19:25,283 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1101 transitions. [2022-11-19 08:19:25,283 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) [2022-11-19 08:19:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1101 transitions. [2022-11-19 08:19:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 08:19:25,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:19:25,285 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:19:25,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-11-19 08:19:25,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 (22)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:25,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:25,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:19:25,892 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 08:19:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:19:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 782678088, now seen corresponding path program 3 times [2022-11-19 08:19:25,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:19:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049182890] [2022-11-19 08:19:25,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:19:25,894 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 [2022-11-19 08:19:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:19:25,896 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:19:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/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 (25)] Waiting until timeout for monitored process [2022-11-19 08:19:26,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 08:19:26,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:19:26,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:19:26,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:19:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:19:27,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:19:27,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:19:27,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049182890] [2022-11-19 08:19:27,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049182890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:19:27,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1833339143] [2022-11-19 08:19:27,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:19:27,967 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:19:27,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:19:27,975 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:19:27,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-19 08:19:33,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 08:19:33,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:19:33,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:19:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:19:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:19:33,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:19:33,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1833339143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:19:33,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910450924] [2022-11-19 08:19:33,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:19:33,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:19:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:19:33,783 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:19:33,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f578a81-85ed-42fe-8b26-49e8cf0ab5d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process