./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- 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 07:45:37,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:45:37,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:45:37,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:45:37,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:45:37,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:45:37,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:45:37,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:45:37,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:45:37,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:45:37,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:45:37,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:45:37,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:45:37,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:45:37,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:45:37,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:45:37,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:45:37,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:45:37,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:45:37,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:45:37,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:45:37,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:45:37,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:45:37,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:45:37,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:45:37,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:45:37,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:45:37,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:45:37,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:45:37,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:45:37,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:45:37,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:45:37,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:45:37,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:45:37,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:45:37,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:45:37,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:45:37,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:45:37,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:45:37,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:45:37,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:45:37,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:45:37,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:45:37,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:45:37,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:45:37,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:45:37,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:45:37,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:45:37,163 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:45:37,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:45:37,164 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:45:37,164 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:45:37,164 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:45:37,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:45:37,165 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:45:37,165 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:45:37,166 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:45:37,166 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:45:37,166 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:45:37,166 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:45:37,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:45:37,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:45:37,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:45:37,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:45:37,168 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:45:37,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:45:37,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:45:37,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:45:37,169 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:45:37,169 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:45:37,170 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:45:37,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:45:37,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:45:37,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:45:37,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:45:37,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:45:37,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:45:37,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:37,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:45:37,172 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:45:37,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:45:37,172 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:45:37,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:45:37,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:45:37,173 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2022-11-19 07:45:37,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:45:37,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:45:37,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:45:37,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:45:37,506 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:45:37,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-11-19 07:45:37,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/eef3e9577/97696c3576324b5ebd1943004a6048fa/FLAG9f9be230b [2022-11-19 07:45:38,202 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:45:38,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-11-19 07:45:38,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/eef3e9577/97696c3576324b5ebd1943004a6048fa/FLAG9f9be230b [2022-11-19 07:45:38,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/eef3e9577/97696c3576324b5ebd1943004a6048fa [2022-11-19 07:45:38,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:45:38,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:45:38,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:38,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:45:38,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:45:38,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:38" (1/1) ... [2022-11-19 07:45:38,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5e4f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38, skipping insertion in model container [2022-11-19 07:45:38,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:38" (1/1) ... [2022-11-19 07:45:38,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:45:38,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:45:39,004 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-11-19 07:45:39,148 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-11-19 07:45:39,150 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-11-19 07:45:39,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:39,166 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 07:45:39,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72ee246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:39, skipping insertion in model container [2022-11-19 07:45:39,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:39,172 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 07:45:39,174 INFO L158 Benchmark]: Toolchain (without parser) took 699.51ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 53.3MB in the beginning and 100.6MB in the end (delta: -47.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-19 07:45:39,175 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:45:39,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 696.76ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 53.1MB in the beginning and 100.6MB in the end (delta: -47.5MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-19 07:45:39,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 696.76ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 53.1MB in the beginning and 100.6MB in the end (delta: -47.5MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- 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 07:45:41,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:45:41,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:45:41,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:45:41,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:45:41,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:45:41,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:45:41,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:45:41,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:45:41,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:45:41,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:45:41,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:45:41,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:45:41,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:45:41,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:45:41,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:45:41,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:45:41,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:45:41,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:45:41,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:45:41,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:45:41,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:45:41,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:45:41,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:45:41,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:45:41,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:45:41,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:45:41,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:45:41,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:45:41,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:45:41,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:45:41,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:45:41,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:45:41,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:45:41,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:45:41,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:45:41,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:45:41,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:45:41,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:45:41,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:45:41,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:45:41,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 07:45:41,530 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:45:41,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:45:41,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:45:41,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:45:41,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:45:41,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:45:41,534 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:45:41,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:45:41,535 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:45:41,535 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:45:41,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:45:41,537 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:45:41,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:45:41,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:45:41,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:45:41,540 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:45:41,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:45:41,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:45:41,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:45:41,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:45:41,541 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:45:41,542 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:45:41,542 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:45:41,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:45:41,543 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:45:41,543 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:45:41,543 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:45:41,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:45:41,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:45:41,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:45:41,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:45:41,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:45:41,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:41,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:45:41,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:45:41,547 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:45:41,547 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:45:41,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:45:41,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:45:41,548 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2022-11-19 07:45:41,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:45:42,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:45:42,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:45:42,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:45:42,032 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:45:42,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-11-19 07:45:42,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/e09cc9e06/18cba3a576e1499188f0387b3f044ebd/FLAG8cfcb8a13 [2022-11-19 07:45:42,849 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:45:42,849 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-11-19 07:45:42,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/e09cc9e06/18cba3a576e1499188f0387b3f044ebd/FLAG8cfcb8a13 [2022-11-19 07:45:43,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/data/e09cc9e06/18cba3a576e1499188f0387b3f044ebd [2022-11-19 07:45:43,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:45:43,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:45:43,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:43,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:45:43,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:45:43,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:43" (1/1) ... [2022-11-19 07:45:43,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab26c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43, skipping insertion in model container [2022-11-19 07:45:43,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:43" (1/1) ... [2022-11-19 07:45:43,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:45:43,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:45:43,729 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-11-19 07:45:43,920 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-11-19 07:45:43,922 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-11-19 07:45:43,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:43,944 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:45:43,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:45:43,982 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-11-19 07:45:44,053 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-11-19 07:45:44,064 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-11-19 07:45:44,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:44,077 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:45:44,108 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-11-19 07:45:44,215 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-11-19 07:45:44,217 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_a6c06928-fb41-4db0-a345-cb0f6788ee29/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-11-19 07:45:44,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:44,276 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:45:44,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44 WrapperNode [2022-11-19 07:45:44,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:44,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:45:44,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:45:44,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:45:44,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,390 INFO L138 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1007 [2022-11-19 07:45:44,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:45:44,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:45:44,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:45:44,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:45:44,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,486 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:45:44,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:45:44,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:45:44,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:45:44,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (1/1) ... [2022-11-19 07:45:44,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:44,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:45:44,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:45:44,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:45:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:45:44,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:45:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:45:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:45:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:45:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:45:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:45:44,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:45:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:45:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:45:44,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:45:44,936 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:45:44,941 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-19 07:45:50,267 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:45:50,283 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:45:50,295 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:45:50,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:50 BoogieIcfgContainer [2022-11-19 07:45:50,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:45:50,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:45:50,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:45:50,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:45:50,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:43" (1/3) ... [2022-11-19 07:45:50,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea17798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:50, skipping insertion in model container [2022-11-19 07:45:50,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:44" (2/3) ... [2022-11-19 07:45:50,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea17798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:50, skipping insertion in model container [2022-11-19 07:45:50,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:50" (3/3) ... [2022-11-19 07:45:50,308 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-1.i [2022-11-19 07:45:50,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:45:50,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2022-11-19 07:45:50,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:45:50,411 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;@3931945a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:45:50,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2022-11-19 07:45:50,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 1049 states, 517 states have (on average 2.25531914893617) internal successors, (1166), 1044 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:45:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:45:50,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:50,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:45:50,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:45:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-19 07:45:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:45:50,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054371343] [2022-11-19 07:45:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:50,449 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 07:45:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:45:50,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:50,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:50,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:45:50,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:50,737 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 07:45:50,754 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 07:45:50,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:45:50,755 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:45:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054371343] [2022-11-19 07:45:50,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054371343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:50,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:50,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:45:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798861275] [2022-11-19 07:45:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:45:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:45:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:45:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:45:50,808 INFO L87 Difference]: Start difference. First operand has 1049 states, 517 states have (on average 2.25531914893617) internal successors, (1166), 1044 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 07:45:53,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:53,077 INFO L93 Difference]: Finished difference Result 1040 states and 1094 transitions. [2022-11-19 07:45:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:45:53,079 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 07:45:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:53,096 INFO L225 Difference]: With dead ends: 1040 [2022-11-19 07:45:53,096 INFO L226 Difference]: Without dead ends: 1038 [2022-11-19 07:45:53,097 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 07:45:53,101 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 967 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:53,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 668 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:45:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-19 07:45:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1030. [2022-11-19 07:45:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 515 states have (on average 2.095145631067961) internal successors, (1079), 1025 states have internal predecessors, (1079), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:45:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1085 transitions. [2022-11-19 07:45:53,212 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1085 transitions. Word has length 3 [2022-11-19 07:45:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:53,212 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1085 transitions. [2022-11-19 07:45:53,212 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 07:45:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1085 transitions. [2022-11-19 07:45:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:45:53,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:53,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:45:53,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:53,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:53,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:45:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-19 07:45:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:45:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830299728] [2022-11-19 07:45:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:53,429 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 07:45:53,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:45:53,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:53,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:53,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:45:53,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:53,582 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 07:45:53,595 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 07:45:53,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:45:53,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:45:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830299728] [2022-11-19 07:45:53,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830299728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:53,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:53,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:45:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445399661] [2022-11-19 07:45:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:53,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:45:53,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:45:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:45:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:45:53,606 INFO L87 Difference]: Start difference. First operand 1030 states and 1085 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 07:45:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:57,166 INFO L93 Difference]: Finished difference Result 1420 states and 1504 transitions. [2022-11-19 07:45:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:45:57,167 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 07:45:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:57,172 INFO L225 Difference]: With dead ends: 1420 [2022-11-19 07:45:57,172 INFO L226 Difference]: Without dead ends: 1420 [2022-11-19 07:45:57,172 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 07:45:57,174 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 419 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:57,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1458 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 07:45:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-11-19 07:45:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1231. [2022-11-19 07:45:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 717 states have (on average 2.0808926080892607) internal successors, (1492), 1226 states have internal predecessors, (1492), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:45:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1498 transitions. [2022-11-19 07:45:57,203 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1498 transitions. Word has length 3 [2022-11-19 07:45:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:57,203 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1498 transitions. [2022-11-19 07:45:57,204 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 07:45:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1498 transitions. [2022-11-19 07:45:57,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:45:57,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:57,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:57,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:57,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:57,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:45:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-19 07:45:57,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:45:57,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014660523] [2022-11-19 07:45:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:57,418 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 07:45:57,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:45:57,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:57,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:45:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:57,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:45:57,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:57,582 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 07:45:57,588 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 07:45:57,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:45:57,648 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 07:45:57,662 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:45:57,662 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 07:45:57,686 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 07:45:57,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:45:57,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:45:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014660523] [2022-11-19 07:45:57,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014660523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:57,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:57,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:45:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219565132] [2022-11-19 07:45:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:45:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:45:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:45:57,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:45:57,690 INFO L87 Difference]: Start difference. First operand 1231 states and 1498 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 07:46:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:00,835 INFO L93 Difference]: Finished difference Result 1232 states and 1501 transitions. [2022-11-19 07:46:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:00,836 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 07:46:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:00,841 INFO L225 Difference]: With dead ends: 1232 [2022-11-19 07:46:00,841 INFO L226 Difference]: Without dead ends: 1232 [2022-11-19 07:46:00,841 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 07:46:00,842 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1057 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:00,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 379 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 07:46:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-11-19 07:46:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1019. [2022-11-19 07:46:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 515 states have (on average 2.071844660194175) internal successors, (1067), 1014 states have internal predecessors, (1067), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1073 transitions. [2022-11-19 07:46:00,868 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1073 transitions. Word has length 7 [2022-11-19 07:46:00,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:00,868 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1073 transitions. [2022-11-19 07:46:00,868 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 07:46:00,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1073 transitions. [2022-11-19 07:46:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:46:00,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:00,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:00,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:01,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:01,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-19 07:46:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:01,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066900873] [2022-11-19 07:46:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:01,083 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 07:46:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:01,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:01,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:01,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:46:01,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:01,210 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 07:46:01,221 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 07:46:01,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:01,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066900873] [2022-11-19 07:46:01,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066900873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:01,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:01,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:46:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788861305] [2022-11-19 07:46:01,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:01,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:01,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:01,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:01,229 INFO L87 Difference]: Start difference. First operand 1019 states and 1073 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 07:46:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:03,500 INFO L93 Difference]: Finished difference Result 1348 states and 1431 transitions. [2022-11-19 07:46:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:03,501 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 07:46:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:03,505 INFO L225 Difference]: With dead ends: 1348 [2022-11-19 07:46:03,505 INFO L226 Difference]: Without dead ends: 1348 [2022-11-19 07:46:03,506 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 07:46:03,507 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 971 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:03,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1163 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:46:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-11-19 07:46:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 972. [2022-11-19 07:46:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 515 states have (on average 1.9805825242718447) internal successors, (1020), 967 states have internal predecessors, (1020), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1026 transitions. [2022-11-19 07:46:03,527 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1026 transitions. Word has length 8 [2022-11-19 07:46:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:03,527 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1026 transitions. [2022-11-19 07:46:03,528 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 07:46:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1026 transitions. [2022-11-19 07:46:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:46:03,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:03,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:03,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:03,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-19 07:46:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:03,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857997586] [2022-11-19 07:46:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:03,746 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 07:46:03,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:03,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:03,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:03,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:46:03,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:03,891 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 07:46:03,922 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 07:46:03,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:03,923 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857997586] [2022-11-19 07:46:03,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857997586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:03,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:03,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:46:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534391637] [2022-11-19 07:46:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:03,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:03,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:03,925 INFO L87 Difference]: Start difference. First operand 972 states and 1026 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 07:46:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:07,143 INFO L93 Difference]: Finished difference Result 1427 states and 1513 transitions. [2022-11-19 07:46:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:07,144 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 07:46:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:07,148 INFO L225 Difference]: With dead ends: 1427 [2022-11-19 07:46:07,148 INFO L226 Difference]: Without dead ends: 1427 [2022-11-19 07:46:07,149 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 07:46:07,150 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 674 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:07,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1538 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:46:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2022-11-19 07:46:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 994. [2022-11-19 07:46:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 547 states have (on average 1.9670932358318098) internal successors, (1076), 989 states have internal predecessors, (1076), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1082 transitions. [2022-11-19 07:46:07,172 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1082 transitions. Word has length 8 [2022-11-19 07:46:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:07,173 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1082 transitions. [2022-11-19 07:46:07,173 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 07:46:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1082 transitions. [2022-11-19 07:46:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:46:07,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:07,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:07,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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)] Ended with exit code 0 [2022-11-19 07:46:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:07,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash 693877877, now seen corresponding path program 1 times [2022-11-19 07:46:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:07,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713998450] [2022-11-19 07:46:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:07,386 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 07:46:07,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:07,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:07,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:07,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:46:07,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:07,596 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 07:46:07,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:07,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:07,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713998450] [2022-11-19 07:46:07,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713998450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:07,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:07,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855369373] [2022-11-19 07:46:07,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:07,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:07,598 INFO L87 Difference]: Start difference. First operand 994 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:46:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:08,359 INFO L93 Difference]: Finished difference Result 1445 states and 1566 transitions. [2022-11-19 07:46:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:46:08,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:46:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:08,365 INFO L225 Difference]: With dead ends: 1445 [2022-11-19 07:46:08,366 INFO L226 Difference]: Without dead ends: 1445 [2022-11-19 07:46:08,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:08,370 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 548 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:08,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2919 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:46:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-11-19 07:46:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1235. [2022-11-19 07:46:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 788 states have (on average 1.9441624365482233) internal successors, (1532), 1230 states have internal predecessors, (1532), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1538 transitions. [2022-11-19 07:46:08,402 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1538 transitions. Word has length 11 [2022-11-19 07:46:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:08,403 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1538 transitions. [2022-11-19 07:46:08,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:46:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1538 transitions. [2022-11-19 07:46:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:46:08,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:08,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:08,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:08,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:08,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash 35377727, now seen corresponding path program 1 times [2022-11-19 07:46:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:08,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372294881] [2022-11-19 07:46:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:08,621 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 07:46:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:08,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:08,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:08,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:08,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:08,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:46:08,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:46:08,829 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 29 treesize of output 38 [2022-11-19 07:46:08,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:46:08,876 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 62 treesize of output 22 [2022-11-19 07:46:08,898 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 07:46:08,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:08,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:08,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372294881] [2022-11-19 07:46:08,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372294881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:08,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26450958] [2022-11-19 07:46:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:08,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:08,901 INFO L87 Difference]: Start difference. First operand 1235 states and 1538 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:46:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:10,501 INFO L93 Difference]: Finished difference Result 1591 states and 1953 transitions. [2022-11-19 07:46:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:10,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-19 07:46:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:10,506 INFO L225 Difference]: With dead ends: 1591 [2022-11-19 07:46:10,507 INFO L226 Difference]: Without dead ends: 1591 [2022-11-19 07:46:10,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 07:46:10,508 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 352 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:10,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 2785 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 48 Unchecked, 1.5s Time] [2022-11-19 07:46:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2022-11-19 07:46:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1234. [2022-11-19 07:46:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 787 states have (on average 1.9440914866581958) internal successors, (1530), 1229 states have internal predecessors, (1530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1536 transitions. [2022-11-19 07:46:10,533 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1536 transitions. Word has length 12 [2022-11-19 07:46:10,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:10,534 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1536 transitions. [2022-11-19 07:46:10,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:46:10,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1536 transitions. [2022-11-19 07:46:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:46:10,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:10,535 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 07:46:10,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:10,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:10,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:10,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-19 07:46:10,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:10,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90963265] [2022-11-19 07:46:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:10,750 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 07:46:10,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:10,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:10,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:10,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:46:10,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:10,932 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 07:46:10,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:10,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:10,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90963265] [2022-11-19 07:46:10,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90963265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:10,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:10,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664430494] [2022-11-19 07:46:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:10,934 INFO L87 Difference]: Start difference. First operand 1234 states and 1536 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 07:46:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:10,965 INFO L93 Difference]: Finished difference Result 1174 states and 1450 transitions. [2022-11-19 07:46:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:10,966 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 07:46:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:10,969 INFO L225 Difference]: With dead ends: 1174 [2022-11-19 07:46:10,969 INFO L226 Difference]: Without dead ends: 1174 [2022-11-19 07:46:10,970 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 07:46:10,970 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 953 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 991 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 07:46:10,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 991 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:46:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-11-19 07:46:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2022-11-19 07:46:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 751 states have (on average 1.9227696404793608) internal successors, (1444), 1169 states have internal predecessors, (1444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1450 transitions. [2022-11-19 07:46:10,993 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1450 transitions. Word has length 18 [2022-11-19 07:46:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:10,994 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1450 transitions. [2022-11-19 07:46:10,994 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 07:46:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1450 transitions. [2022-11-19 07:46:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:46:10,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:10,995 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 07:46:11,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-19 07:46:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946710940] [2022-11-19 07:46:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:11,205 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 07:46:11,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:11,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:11,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:46:11,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:11,415 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 07:46:11,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:11,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:11,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946710940] [2022-11-19 07:46:11,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946710940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:11,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:11,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980858313] [2022-11-19 07:46:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:11,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:11,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:11,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:11,417 INFO L87 Difference]: Start difference. First operand 1174 states and 1450 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 07:46:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:11,491 INFO L93 Difference]: Finished difference Result 1146 states and 1394 transitions. [2022-11-19 07:46:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:11,492 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 07:46:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:11,495 INFO L225 Difference]: With dead ends: 1146 [2022-11-19 07:46:11,495 INFO L226 Difference]: Without dead ends: 1146 [2022-11-19 07:46:11,496 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 07:46:11,496 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 934 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1863 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 07:46:11,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1863 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:46:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-19 07:46:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2022-11-19 07:46:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 735 states have (on average 1.8857142857142857) internal successors, (1386), 1139 states have internal predecessors, (1386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1392 transitions. [2022-11-19 07:46:11,519 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1392 transitions. Word has length 20 [2022-11-19 07:46:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:11,520 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1392 transitions. [2022-11-19 07:46:11,520 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 07:46:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1392 transitions. [2022-11-19 07:46:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:46:11,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:11,521 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 07:46:11,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-19 07:46:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:11,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594234736] [2022-11-19 07:46:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:11,740 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 07:46:11,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:11,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:11,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:46:11,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:11,967 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 07:46:12,051 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 07:46:12,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:12,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594234736] [2022-11-19 07:46:12,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594234736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:12,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:12,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654432233] [2022-11-19 07:46:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:12,054 INFO L87 Difference]: Start difference. First operand 1144 states and 1392 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 07:46:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:14,590 INFO L93 Difference]: Finished difference Result 1605 states and 1974 transitions. [2022-11-19 07:46:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:46:14,592 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 07:46:14,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:14,594 INFO L225 Difference]: With dead ends: 1605 [2022-11-19 07:46:14,595 INFO L226 Difference]: Without dead ends: 1605 [2022-11-19 07:46:14,595 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 07:46:14,595 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1675 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:14,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 1002 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:46:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2022-11-19 07:46:14,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1140. [2022-11-19 07:46:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 735 states have (on average 1.874829931972789) internal successors, (1378), 1135 states have internal predecessors, (1378), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1384 transitions. [2022-11-19 07:46:14,619 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1384 transitions. Word has length 34 [2022-11-19 07:46:14,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:14,619 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1384 transitions. [2022-11-19 07:46:14,619 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 07:46:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1384 transitions. [2022-11-19 07:46:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:46:14,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:14,620 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 07:46:14,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:14,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:14,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-19 07:46:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:14,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559997695] [2022-11-19 07:46:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:14,838 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 07:46:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:14,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:14,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:15,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:46:15,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:15,048 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 07:46:15,232 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 07:46:15,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:15,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:15,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559997695] [2022-11-19 07:46:15,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559997695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:15,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:15,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771910508] [2022-11-19 07:46:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:15,234 INFO L87 Difference]: Start difference. First operand 1140 states and 1384 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 07:46:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:19,252 INFO L93 Difference]: Finished difference Result 1741 states and 2134 transitions. [2022-11-19 07:46:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:46:19,253 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 07:46:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:19,257 INFO L225 Difference]: With dead ends: 1741 [2022-11-19 07:46:19,257 INFO L226 Difference]: Without dead ends: 1741 [2022-11-19 07:46:19,257 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 07:46:19,258 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1158 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:19,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2007 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 07:46:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-11-19 07:46:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1136. [2022-11-19 07:46:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 735 states have (on average 1.8639455782312926) internal successors, (1370), 1131 states have internal predecessors, (1370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1376 transitions. [2022-11-19 07:46:19,281 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1376 transitions. Word has length 34 [2022-11-19 07:46:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:19,281 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1376 transitions. [2022-11-19 07:46:19,281 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 07:46:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1376 transitions. [2022-11-19 07:46:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 07:46:19,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:19,283 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 07:46:19,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:19,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:19,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-19 07:46:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819586143] [2022-11-19 07:46:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:19,496 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 07:46:19,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:19,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:19,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:19,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:46:19,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:19,857 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 07:46:19,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:19,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:19,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819586143] [2022-11-19 07:46:19,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819586143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:19,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:19,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768682601] [2022-11-19 07:46:19,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:19,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:19,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:19,861 INFO L87 Difference]: Start difference. First operand 1136 states and 1376 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 07:46:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:19,920 INFO L93 Difference]: Finished difference Result 1124 states and 1356 transitions. [2022-11-19 07:46:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:19,920 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 07:46:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:19,924 INFO L225 Difference]: With dead ends: 1124 [2022-11-19 07:46:19,925 INFO L226 Difference]: Without dead ends: 1124 [2022-11-19 07:46:19,925 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 07:46:19,926 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 903 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1841 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 07:46:19,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1841 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:46:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-19 07:46:19,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2022-11-19 07:46:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 723 states have (on average 1.8672199170124482) internal successors, (1350), 1119 states have internal predecessors, (1350), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1356 transitions. [2022-11-19 07:46:19,945 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1356 transitions. Word has length 52 [2022-11-19 07:46:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:19,945 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1356 transitions. [2022-11-19 07:46:19,946 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 07:46:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1356 transitions. [2022-11-19 07:46:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:46:19,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:19,950 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 07:46:19,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:20,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:20,173 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-19 07:46:20,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:20,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009999507] [2022-11-19 07:46:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:20,175 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 07:46:20,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:20,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:20,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:20,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:46:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:20,573 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 07:46:20,582 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 07:46:21,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:46:21,110 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 07:46:21,126 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:46:21,126 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 07:46:21,139 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 07:46:21,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:21,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009999507] [2022-11-19 07:46:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009999507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:21,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049830887] [2022-11-19 07:46:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:21,141 INFO L87 Difference]: Start difference. First operand 1124 states and 1356 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 07:46:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:24,383 INFO L93 Difference]: Finished difference Result 1536 states and 1893 transitions. [2022-11-19 07:46:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:24,385 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 07:46:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:24,388 INFO L225 Difference]: With dead ends: 1536 [2022-11-19 07:46:24,388 INFO L226 Difference]: Without dead ends: 1536 [2022-11-19 07:46:24,388 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 07:46:24,389 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2042 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:24,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 460 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:46:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-11-19 07:46:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1054. [2022-11-19 07:46:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 691 states have (on average 1.8031837916063675) internal successors, (1246), 1049 states have internal predecessors, (1246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1252 transitions. [2022-11-19 07:46:24,407 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1252 transitions. Word has length 60 [2022-11-19 07:46:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:24,407 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1252 transitions. [2022-11-19 07:46:24,407 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 07:46:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1252 transitions. [2022-11-19 07:46:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:46:24,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:24,409 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 07:46:24,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:24,623 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-19 07:46:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:24,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227698909] [2022-11-19 07:46:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:24,625 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 07:46:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:24,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:24,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:24,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:24,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:24,962 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 07:46:24,984 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 07:46:25,014 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 07:46:25,026 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 07:46:25,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:25,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:25,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227698909] [2022-11-19 07:46:25,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227698909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:25,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:25,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270699374] [2022-11-19 07:46:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:25,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:46:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:46:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:25,029 INFO L87 Difference]: Start difference. First operand 1054 states and 1252 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 07:46:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:27,874 INFO L93 Difference]: Finished difference Result 1053 states and 1251 transitions. [2022-11-19 07:46:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:46:27,874 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 07:46:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:27,877 INFO L225 Difference]: With dead ends: 1053 [2022-11-19 07:46:27,877 INFO L226 Difference]: Without dead ends: 1053 [2022-11-19 07:46:27,877 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 07:46:27,878 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 4 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:27,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2229 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:46:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-19 07:46:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2022-11-19 07:46:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 691 states have (on average 1.8017366136034731) internal successors, (1245), 1048 states have internal predecessors, (1245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1251 transitions. [2022-11-19 07:46:27,893 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1251 transitions. Word has length 65 [2022-11-19 07:46:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:27,894 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1251 transitions. [2022-11-19 07:46:27,894 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 07:46:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1251 transitions. [2022-11-19 07:46:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:46:27,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:27,895 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 07:46:27,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:28,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:28,109 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-19 07:46:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:28,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135029128] [2022-11-19 07:46:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:28,110 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 07:46:28,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:28,113 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:28,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:28,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:46:28,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:28,470 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 07:46:28,491 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 07:46:28,512 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 07:46:28,571 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 07:46:28,578 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 07:46:28,596 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 07:46:28,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:28,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:28,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135029128] [2022-11-19 07:46:28,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135029128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:28,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:28,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:28,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314703776] [2022-11-19 07:46:28,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:28,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:46:28,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:28,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:46:28,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:28,598 INFO L87 Difference]: Start difference. First operand 1053 states and 1251 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 07:46:32,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:32,335 INFO L93 Difference]: Finished difference Result 1052 states and 1250 transitions. [2022-11-19 07:46:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:46:32,336 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 07:46:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:32,339 INFO L225 Difference]: With dead ends: 1052 [2022-11-19 07:46:32,339 INFO L226 Difference]: Without dead ends: 1052 [2022-11-19 07:46:32,340 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 07:46:32,340 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:32,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2270 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:46:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-11-19 07:46:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2022-11-19 07:46:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 690 states have (on average 1.8028985507246378) internal successors, (1244), 1047 states have internal predecessors, (1244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:46:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1250 transitions. [2022-11-19 07:46:32,356 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1250 transitions. Word has length 65 [2022-11-19 07:46:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:32,356 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1250 transitions. [2022-11-19 07:46:32,357 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 07:46:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1250 transitions. [2022-11-19 07:46:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:46:32,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:32,358 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 07:46:32,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:32,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -337406705, now seen corresponding path program 1 times [2022-11-19 07:46:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480217603] [2022-11-19 07:46:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:32,573 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 07:46:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:32,573 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:32,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:32,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:46:32,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:32,904 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 07:46:32,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:32,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:32,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480217603] [2022-11-19 07:46:32,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480217603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:32,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:32,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:46:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912886311] [2022-11-19 07:46:32,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:32,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:46:32,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:46:32,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:46:32,911 INFO L87 Difference]: Start difference. First operand 1052 states and 1250 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 07:46:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:32,963 INFO L93 Difference]: Finished difference Result 1055 states and 1254 transitions. [2022-11-19 07:46:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:32,964 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 07:46:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:32,973 INFO L225 Difference]: With dead ends: 1055 [2022-11-19 07:46:32,974 INFO L226 Difference]: Without dead ends: 1055 [2022-11-19 07:46:32,974 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 07:46:32,982 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2629 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 07:46:32,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2629 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:46:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-11-19 07:46:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2022-11-19 07:46:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 692 states have (on average 1.8020231213872833) internal successors, (1247), 1050 states have internal predecessors, (1247), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 07:46:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1254 transitions. [2022-11-19 07:46:33,009 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1254 transitions. Word has length 73 [2022-11-19 07:46:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:33,009 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1254 transitions. [2022-11-19 07:46:33,010 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 07:46:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1254 transitions. [2022-11-19 07:46:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:46:33,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:33,011 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 07:46:33,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:33,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:33,226 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash -842451762, now seen corresponding path program 1 times [2022-11-19 07:46:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:33,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723682733] [2022-11-19 07:46:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:33,227 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 07:46:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:33,228 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:33,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:33,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:46:33,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:33,611 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 07:46:33,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:33,702 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 07:46:33,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723682733] [2022-11-19 07:46:33,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723682733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [53686947] [2022-11-19 07:46:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:33,703 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:46:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:46:33,704 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:46:33,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-19 07:46:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:34,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:46:34,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:34,234 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 07:46:34,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:34,288 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 07:46:34,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [53686947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:34,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387805794] [2022-11-19 07:46:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:34,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:34,295 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:34,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 07:46:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:34,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:46:34,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:34,657 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 07:46:34,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:34,701 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 07:46:34,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387805794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:34,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:46:34,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-19 07:46:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670263306] [2022-11-19 07:46:34,702 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:46:34,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:46:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:46:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:46:34,704 INFO L87 Difference]: Start difference. First operand 1055 states and 1254 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 07:46:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:34,900 INFO L93 Difference]: Finished difference Result 1067 states and 1271 transitions. [2022-11-19 07:46:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:46:34,901 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 07:46:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:34,908 INFO L225 Difference]: With dead ends: 1067 [2022-11-19 07:46:34,908 INFO L226 Difference]: Without dead ends: 1067 [2022-11-19 07:46:34,909 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 07:46:34,910 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 14 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:34,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5250 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:46:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-19 07:46:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2022-11-19 07:46:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 701 states have (on average 1.8002853067047075) internal successors, (1262), 1059 states have internal predecessors, (1262), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 07:46:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1269 transitions. [2022-11-19 07:46:34,932 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1269 transitions. Word has length 74 [2022-11-19 07:46:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:34,933 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1269 transitions. [2022-11-19 07:46:34,933 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 07:46:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1269 transitions. [2022-11-19 07:46:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:46:34,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:34,934 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 07:46:34,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:35,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:35,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:35,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:35,539 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:46:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 137170127, now seen corresponding path program 2 times [2022-11-19 07:46:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:46:35,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107895479] [2022-11-19 07:46:35,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:46:35,541 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 07:46:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:46:35,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:46:35,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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)] Waiting until timeout for monitored process [2022-11-19 07:46:36,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:46:36,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:46:36,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:36,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:36,102 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 07:46:36,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:36,304 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 07:46:36,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:46:36,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107895479] [2022-11-19 07:46:36,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107895479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:36,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [658076621] [2022-11-19 07:46:36,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:46:36,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:46:36,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:46:36,312 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:46:36,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-19 07:46:37,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:46:37,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:46:37,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:37,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:37,958 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 07:46:37,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:38,038 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 07:46:38,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [658076621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:38,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828081952] [2022-11-19 07:46:38,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:46:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:38,044 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:38,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:46:54,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:46:54,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:46:54,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 07:46:54,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:54,683 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 07:46:54,698 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:46:54,698 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 07:46:54,764 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 07:46:54,787 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 07:46:55,002 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 07:46:55,009 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 07:46:55,111 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1586 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1586) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1587 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1587) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:46:55,126 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1588))) (exists ((v_ArrVal_1589 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1589))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:46:55,142 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:46:55,157 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:46:55,214 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:46:55,215 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 07:46:55,230 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 07:46:55,321 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 07:46:55,327 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 07:46:55,378 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 07:46:55,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:55,757 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1604 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1604) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-19 07:46:55,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828081952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:46:55,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-19 07:46:55,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-19 07:46:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867854152] [2022-11-19 07:46:55,765 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-19 07:46:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:46:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:46:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:46:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-11-19 07:46:55,766 INFO L87 Difference]: Start difference. First operand 1065 states and 1269 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 07:47:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:06,195 INFO L93 Difference]: Finished difference Result 1535 states and 1875 transitions. [2022-11-19 07:47:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 07:47:06,197 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 07:47:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:06,201 INFO L225 Difference]: With dead ends: 1535 [2022-11-19 07:47:06,202 INFO L226 Difference]: Without dead ends: 1531 [2022-11-19 07:47:06,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=248, Invalid=1171, Unknown=7, NotChecked=380, Total=1806 [2022-11-19 07:47:06,203 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2055 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 4542 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 10501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5938 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:06,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 4328 Invalid, 10501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 4542 Invalid, 0 Unknown, 5938 Unchecked, 9.4s Time] [2022-11-19 07:47:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-19 07:47:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1073. [2022-11-19 07:47:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 709 states have (on average 1.7954866008462624) internal successors, (1273), 1067 states have internal predecessors, (1273), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 07:47:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1280 transitions. [2022-11-19 07:47:06,225 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1280 transitions. Word has length 77 [2022-11-19 07:47:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:06,226 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1280 transitions. [2022-11-19 07:47:06,226 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 07:47:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1280 transitions. [2022-11-19 07:47:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 07:47:06,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:06,227 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 07:47:06,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:06,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:06,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:06,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:47:06,852 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-19 07:47:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1134946994, now seen corresponding path program 3 times [2022-11-19 07:47:06,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:47:06,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060080827] [2022-11-19 07:47:06,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:06,853 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 07:47:06,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:47:06,854 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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 07:47:06,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/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)] Waiting until timeout for monitored process [2022-11-19 07:47:07,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 07:47:07,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:47:07,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:07,787 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 07:47:07,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:08,568 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 07:47:08,569 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:47:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060080827] [2022-11-19 07:47:08,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060080827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1651856336] [2022-11-19 07:47:08,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:08,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:47:08,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:47:08,570 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:47:08,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-19 07:47:13,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 07:47:13,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:13,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:47:13,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:13,497 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 07:47:13,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:13,749 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 07:47:13,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1651856336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:13,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138361008] [2022-11-19 07:47:13,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:13,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:13,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:13,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:13,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c06928-fb41-4db0-a345-cb0f6788ee29/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process