./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:11:29,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:11:29,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:11:29,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:11:29,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:11:29,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:11:29,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:11:29,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:11:29,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:11:29,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:11:29,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:11:29,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:11:29,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:11:29,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:11:29,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:11:29,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:11:29,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:11:29,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:11:29,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:11:29,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:11:29,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:11:29,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:11:29,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:11:29,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:11:29,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:11:29,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:11:29,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:11:29,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:11:29,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:11:29,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:11:29,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:11:29,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:11:29,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:11:29,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:11:29,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:11:29,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:11:29,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:11:29,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:11:29,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:11:29,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:11:29,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:11:29,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:11:29,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:11:29,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:11:29,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:11:29,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:11:29,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:11:29,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:11:29,318 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:11:29,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:11:29,319 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:11:29,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:11:29,319 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:11:29,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:11:29,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:11:29,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:11:29,320 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:11:29,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:11:29,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:11:29,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:11:29,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:11:29,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:11:29,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:11:29,321 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:11:29,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:11:29,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:11:29,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:11:29,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:11:29,322 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:11:29,322 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:11:29,323 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:11:29,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:11:29,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:11:29,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:11:29,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:11:29,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:11:29,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:11:29,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:11:29,325 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_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d [2022-12-14 10:11:29,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:11:29,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:11:29,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:11:29,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:11:29,513 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:11:29,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2022-12-14 10:11:32,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:11:32,276 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:11:32,276 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2022-12-14 10:11:32,286 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data/afa5ff152/6551e632284a496c909cd980df6fdd65/FLAG9f8cbf3b4 [2022-12-14 10:11:32,640 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data/afa5ff152/6551e632284a496c909cd980df6fdd65 [2022-12-14 10:11:32,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:11:32,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:11:32,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:11:32,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:11:32,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:11:32,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:11:32" (1/1) ... [2022-12-14 10:11:32,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea67244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:32, skipping insertion in model container [2022-12-14 10:11:32,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:11:32" (1/1) ... [2022-12-14 10:11:32,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:11:32,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:11:33,006 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2022-12-14 10:11:33,084 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:11:33,094 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2022-12-14 10:11:33,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:11:33,119 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 10:11:33,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c26e00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:33, skipping insertion in model container [2022-12-14 10:11:33,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:11:33,120 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 10:11:33,121 INFO L158 Benchmark]: Toolchain (without parser) took 478.23ms. Allocated memory is still 134.2MB. Free memory was 96.2MB in the beginning and 76.0MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 10:11:33,122 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 134.2MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:11:33,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.57ms. Allocated memory is still 134.2MB. Free memory was 96.2MB in the beginning and 76.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 10:11:33,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 134.2MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.57ms. Allocated memory is still 134.2MB. Free memory was 96.2MB in the beginning and 76.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:11:34,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:11:34,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:11:34,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:11:34,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:11:34,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:11:34,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:11:34,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:11:34,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:11:34,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:11:34,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:11:34,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:11:34,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:11:34,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:11:34,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:11:34,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:11:34,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:11:34,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:11:34,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:11:34,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:11:34,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:11:34,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:11:34,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:11:34,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:11:34,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:11:34,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:11:34,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:11:34,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:11:34,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:11:34,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:11:34,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:11:34,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:11:34,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:11:34,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:11:34,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:11:34,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:11:34,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:11:34,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:11:34,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:11:34,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:11:34,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:11:34,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:11:34,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:11:34,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:11:34,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:11:34,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:11:34,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:11:34,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:11:34,566 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:11:34,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:11:34,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:11:34,567 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:11:34,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:11:34,567 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:11:34,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:11:34,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:11:34,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:11:34,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:11:34,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:11:34,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:11:34,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:11:34,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:11:34,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:11:34,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:11:34,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:11:34,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:11:34,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:11:34,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:11:34,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:11:34,570 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:11:34,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:11:34,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:11:34,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:11:34,571 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_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d [2022-12-14 10:11:34,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:11:34,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:11:34,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:11:34,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:11:34,791 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:11:34,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2022-12-14 10:11:37,356 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:11:37,568 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:11:37,569 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2022-12-14 10:11:37,582 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data/25e771022/342bd090dbf94b1eb04d11ca2068368b/FLAGfacef7891 [2022-12-14 10:11:37,919 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/data/25e771022/342bd090dbf94b1eb04d11ca2068368b [2022-12-14 10:11:37,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:11:37,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:11:37,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:11:37,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:11:37,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:11:37,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:11:37" (1/1) ... [2022-12-14 10:11:37,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381cef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:37, skipping insertion in model container [2022-12-14 10:11:37,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:11:37" (1/1) ... [2022-12-14 10:11:37,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:11:37,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:11:38,211 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2022-12-14 10:11:38,274 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:11:38,281 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2022-12-14 10:11:38,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:11:38,300 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:11:38,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:11:38,323 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2022-12-14 10:11:38,353 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:11:38,358 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2022-12-14 10:11:38,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:11:38,373 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:11:38,390 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2022-12-14 10:11:38,413 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:11:38,417 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2022-12-14 10:11:38,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:11:38,453 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:11:38,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38 WrapperNode [2022-12-14 10:11:38,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:11:38,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:11:38,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:11:38,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:11:38,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,528 INFO L138 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1201 [2022-12-14 10:11:38,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:11:38,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:11:38,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:11:38,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:11:38,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:11:38,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:11:38,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:11:38,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:11:38,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (1/1) ... [2022-12-14 10:11:38,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:11:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:11:38,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:11:38,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:11:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 10:11:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:11:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:11:38,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:11:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:11:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:11:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:11:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:11:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:11:38,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:11:38,880 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:11:38,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:11:38,886 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 10:11:42,671 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:11:42,680 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:11:42,680 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 10:11:42,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:11:42 BoogieIcfgContainer [2022-12-14 10:11:42,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:11:42,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:11:42,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:11:42,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:11:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:11:37" (1/3) ... [2022-12-14 10:11:42,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416ef347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:11:42, skipping insertion in model container [2022-12-14 10:11:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:11:38" (2/3) ... [2022-12-14 10:11:42,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416ef347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:11:42, skipping insertion in model container [2022-12-14 10:11:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:11:42" (3/3) ... [2022-12-14 10:11:42,688 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-2.i [2022-12-14 10:11:42,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:11:42,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2022-12-14 10:11:42,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:11:42,770 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;@67d3b148, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:11:42,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2022-12-14 10:11:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:11:42,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:42,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:11:42,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 10:11:42,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:42,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706231277] [2022-12-14 10:11:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:42,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:42,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:42,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:42,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 10:11:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:42,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:11:42,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:42,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:11:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:42,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:42,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:42,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706231277] [2022-12-14 10:11:42,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706231277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:42,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:42,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:11:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281299133] [2022-12-14 10:11:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:11:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:11:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:43,019 INFO L87 Difference]: Start difference. First operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:44,740 INFO L93 Difference]: Finished difference Result 1442 states and 1526 transitions. [2022-12-14 10:11:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:11:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 10:11:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:44,755 INFO L225 Difference]: With dead ends: 1442 [2022-12-14 10:11:44,756 INFO L226 Difference]: Without dead ends: 1440 [2022-12-14 10:11:44,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:44,759 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1179 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:44,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 926 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:11:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-12-14 10:11:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1255. [2022-12-14 10:11:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 623 states have (on average 2.110754414125201) internal successors, (1315), 1249 states have internal predecessors, (1315), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1331 transitions. [2022-12-14 10:11:44,823 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1331 transitions. Word has length 3 [2022-12-14 10:11:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:44,823 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1331 transitions. [2022-12-14 10:11:44,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1331 transitions. [2022-12-14 10:11:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:11:44,824 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:44,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:11:44,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:11:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:45,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 10:11:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:45,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398052106] [2022-12-14 10:11:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:45,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:45,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:45,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:45,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 10:11:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:45,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:11:45,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:45,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:11:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:45,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:45,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:45,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398052106] [2022-12-14 10:11:45,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398052106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:45,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:45,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:11:45,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489257296] [2022-12-14 10:11:45,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:45,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:11:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:11:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:45,180 INFO L87 Difference]: Start difference. First operand 1255 states and 1331 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:48,193 INFO L93 Difference]: Finished difference Result 1864 states and 1991 transitions. [2022-12-14 10:11:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:11:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 10:11:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:48,201 INFO L225 Difference]: With dead ends: 1864 [2022-12-14 10:11:48,201 INFO L226 Difference]: Without dead ends: 1864 [2022-12-14 10:11:48,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:48,202 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 650 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:48,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1746 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 10:11:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-12-14 10:11:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1455. [2022-12-14 10:11:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 824 states have (on average 2.095873786407767) internal successors, (1727), 1449 states have internal predecessors, (1727), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1743 transitions. [2022-12-14 10:11:48,222 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1743 transitions. Word has length 3 [2022-12-14 10:11:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:48,222 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1743 transitions. [2022-12-14 10:11:48,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1743 transitions. [2022-12-14 10:11:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:11:48,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:48,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:48,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 10:11:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:48,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 10:11:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:48,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138638180] [2022-12-14 10:11:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:48,429 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 [2022-12-14 10:11:48,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:48,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:48,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 10:11:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:48,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:11:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:48,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:11:48,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:11:48,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:11:48,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:11:48,654 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:11:48,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:11:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:48,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:48,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:48,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138638180] [2022-12-14 10:11:48,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138638180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:48,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:48,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:11:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656103119] [2022-12-14 10:11:48,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:11:48,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:11:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:11:48,674 INFO L87 Difference]: Start difference. First operand 1455 states and 1743 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:51,409 INFO L93 Difference]: Finished difference Result 1633 states and 1932 transitions. [2022-12-14 10:11:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:11:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 10:11:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:51,412 INFO L225 Difference]: With dead ends: 1633 [2022-12-14 10:11:51,412 INFO L226 Difference]: Without dead ends: 1633 [2022-12-14 10:11:51,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:11:51,413 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1470 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:51,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 542 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 10:11:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-12-14 10:11:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1244. [2022-12-14 10:11:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1319 transitions. [2022-12-14 10:11:51,428 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1319 transitions. Word has length 7 [2022-12-14 10:11:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:51,429 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1319 transitions. [2022-12-14 10:11:51,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1319 transitions. [2022-12-14 10:11:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:11:51,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:51,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:51,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 10:11:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:51,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 10:11:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588584025] [2022-12-14 10:11:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:51,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:51,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:51,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 10:11:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:51,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:11:51,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:51,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:11:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:51,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:51,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588584025] [2022-12-14 10:11:51,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588584025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:51,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:51,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:11:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725726040] [2022-12-14 10:11:51,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:51,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:11:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:11:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:51,778 INFO L87 Difference]: Start difference. First operand 1244 states and 1319 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:53,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:53,830 INFO L93 Difference]: Finished difference Result 1571 states and 1675 transitions. [2022-12-14 10:11:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:11:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:11:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:53,835 INFO L225 Difference]: With dead ends: 1571 [2022-12-14 10:11:53,835 INFO L226 Difference]: Without dead ends: 1571 [2022-12-14 10:11:53,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:53,836 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 988 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:53,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1507 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 10:11:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-12-14 10:11:53,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1195. [2022-12-14 10:11:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 623 states have (on average 2.012841091492777) internal successors, (1254), 1189 states have internal predecessors, (1254), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1270 transitions. [2022-12-14 10:11:53,849 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1270 transitions. Word has length 8 [2022-12-14 10:11:53,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:53,850 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1270 transitions. [2022-12-14 10:11:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1270 transitions. [2022-12-14 10:11:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:11:53,850 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:53,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:53,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 10:11:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:54,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 10:11:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:54,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241928121] [2022-12-14 10:11:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:54,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:54,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:54,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:54,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 10:11:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:54,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:11:54,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:54,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:11:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:54,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:54,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:54,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241928121] [2022-12-14 10:11:54,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241928121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:54,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:54,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:11:54,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045739386] [2022-12-14 10:11:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:54,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:11:54,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:11:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:54,162 INFO L87 Difference]: Start difference. First operand 1195 states and 1270 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:56,989 INFO L93 Difference]: Finished difference Result 1649 states and 1756 transitions. [2022-12-14 10:11:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:11:56,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:11:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:56,993 INFO L225 Difference]: With dead ends: 1649 [2022-12-14 10:11:56,993 INFO L226 Difference]: Without dead ends: 1649 [2022-12-14 10:11:56,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:56,993 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 673 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:56,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1910 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 10:11:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-12-14 10:11:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1217. [2022-12-14 10:11:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 655 states have (on average 2.0) internal successors, (1310), 1211 states have internal predecessors, (1310), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1326 transitions. [2022-12-14 10:11:57,011 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1326 transitions. Word has length 8 [2022-12-14 10:11:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:57,011 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1326 transitions. [2022-12-14 10:11:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1326 transitions. [2022-12-14 10:11:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:11:57,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:57,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:57,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 10:11:57,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:57,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash 693876885, now seen corresponding path program 1 times [2022-12-14 10:11:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572187148] [2022-12-14 10:11:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:57,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:57,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:57,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:57,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 10:11:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:57,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:11:57,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:57,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:57,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572187148] [2022-12-14 10:11:57,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572187148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:57,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:57,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:11:57,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524837461] [2022-12-14 10:11:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:57,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:11:57,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:11:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:11:57,374 INFO L87 Difference]: Start difference. First operand 1217 states and 1326 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:58,106 INFO L93 Difference]: Finished difference Result 1863 states and 2015 transitions. [2022-12-14 10:11:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:11:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:11:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:58,109 INFO L225 Difference]: With dead ends: 1863 [2022-12-14 10:11:58,109 INFO L226 Difference]: Without dead ends: 1863 [2022-12-14 10:11:58,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:11:58,110 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 754 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:58,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 3733 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 10:11:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-12-14 10:11:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1461. [2022-12-14 10:11:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 899 states have (on average 1.967741935483871) internal successors, (1769), 1455 states have internal predecessors, (1769), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1785 transitions. [2022-12-14 10:11:58,125 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1785 transitions. Word has length 11 [2022-12-14 10:11:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:58,125 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1785 transitions. [2022-12-14 10:11:58,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1785 transitions. [2022-12-14 10:11:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:11:58,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:58,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:58,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 10:11:58,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:58,327 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 10:11:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:58,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512867584] [2022-12-14 10:11:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:58,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:58,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:58,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 10:11:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:58,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:11:58,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:58,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:58,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:58,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512867584] [2022-12-14 10:11:58,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512867584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:58,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:58,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:11:58,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891351195] [2022-12-14 10:11:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:11:58,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:11:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:58,433 INFO L87 Difference]: Start difference. First operand 1461 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:58,455 INFO L93 Difference]: Finished difference Result 1642 states and 1963 transitions. [2022-12-14 10:11:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:11:58,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 10:11:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:58,458 INFO L225 Difference]: With dead ends: 1642 [2022-12-14 10:11:58,458 INFO L226 Difference]: Without dead ends: 1642 [2022-12-14 10:11:58,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:11:58,459 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 602 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:58,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2068 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:11:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-12-14 10:11:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1401. [2022-12-14 10:11:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 863 states have (on average 1.9501738122827346) internal successors, (1683), 1395 states have internal predecessors, (1683), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1699 transitions. [2022-12-14 10:11:58,473 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1699 transitions. Word has length 13 [2022-12-14 10:11:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:58,473 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1699 transitions. [2022-12-14 10:11:58,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1699 transitions. [2022-12-14 10:11:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:11:58,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:58,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:58,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 10:11:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:58,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-12-14 10:11:58,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:58,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384654087] [2022-12-14 10:11:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:58,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:58,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:58,681 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:58,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 10:11:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:58,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:11:58,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:58,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:58,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384654087] [2022-12-14 10:11:58,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384654087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:58,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:58,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:11:58,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960313524] [2022-12-14 10:11:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:58,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:11:58,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:11:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:11:58,868 INFO L87 Difference]: Start difference. First operand 1401 states and 1699 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:11:58,921 INFO L93 Difference]: Finished difference Result 1614 states and 1907 transitions. [2022-12-14 10:11:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:11:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 10:11:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:11:58,924 INFO L225 Difference]: With dead ends: 1614 [2022-12-14 10:11:58,924 INFO L226 Difference]: Without dead ends: 1614 [2022-12-14 10:11:58,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:11:58,925 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 583 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:11:58,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3190 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:11:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-12-14 10:11:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1371. [2022-12-14 10:11:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 847 states have (on average 1.9185360094451003) internal successors, (1625), 1365 states have internal predecessors, (1625), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:11:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1641 transitions. [2022-12-14 10:11:58,940 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1641 transitions. Word has length 15 [2022-12-14 10:11:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:11:58,940 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1641 transitions. [2022-12-14 10:11:58,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:11:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1641 transitions. [2022-12-14 10:11:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:11:58,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:11:58,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:11:58,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 10:11:59,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:59,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:11:59,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:11:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1191550546, now seen corresponding path program 1 times [2022-12-14 10:11:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:11:59,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399710125] [2022-12-14 10:11:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:11:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:11:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:11:59,144 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:11:59,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 10:11:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:11:59,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:11:59,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:11:59,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:11:59,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:11:59,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:11:59,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-12-14 10:11:59,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:11:59,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-12-14 10:11:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:11:59,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:11:59,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:11:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399710125] [2022-12-14 10:11:59,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399710125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:11:59,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:11:59,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:11:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660595504] [2022-12-14 10:11:59,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:11:59,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:11:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:11:59,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:11:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:11:59,334 INFO L87 Difference]: Start difference. First operand 1371 states and 1641 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:00,638 INFO L93 Difference]: Finished difference Result 1825 states and 2165 transitions. [2022-12-14 10:12:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 10:12:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:00,642 INFO L225 Difference]: With dead ends: 1825 [2022-12-14 10:12:00,642 INFO L226 Difference]: Without dead ends: 1825 [2022-12-14 10:12:00,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:00,643 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 444 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:00,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:12:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2022-12-14 10:12:00,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1370. [2022-12-14 10:12:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 846 states have (on average 1.9184397163120568) internal successors, (1623), 1364 states have internal predecessors, (1623), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1639 transitions. [2022-12-14 10:12:00,666 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1639 transitions. Word has length 16 [2022-12-14 10:12:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:00,666 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1639 transitions. [2022-12-14 10:12:00,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1639 transitions. [2022-12-14 10:12:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:12:00,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:00,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:00,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 10:12:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:00,869 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:00,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:00,870 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 10:12:00,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:00,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012427117] [2022-12-14 10:12:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:00,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:00,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:00,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 10:12:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:01,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:12:01,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:01,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:01,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:01,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012427117] [2022-12-14 10:12:01,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012427117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:01,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:01,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:01,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730539055] [2022-12-14 10:12:01,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:01,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:01,068 INFO L87 Difference]: Start difference. First operand 1370 states and 1639 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:01,089 INFO L93 Difference]: Finished difference Result 1310 states and 1553 transitions. [2022-12-14 10:12:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:01,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 10:12:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:01,096 INFO L225 Difference]: With dead ends: 1310 [2022-12-14 10:12:01,096 INFO L226 Difference]: Without dead ends: 1310 [2022-12-14 10:12:01,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:01,097 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:01,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1167 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:12:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-12-14 10:12:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2022-12-14 10:12:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 810 states have (on average 1.8975308641975308) internal successors, (1537), 1304 states have internal predecessors, (1537), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1553 transitions. [2022-12-14 10:12:01,107 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1553 transitions. Word has length 18 [2022-12-14 10:12:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:01,109 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1553 transitions. [2022-12-14 10:12:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1553 transitions. [2022-12-14 10:12:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:12:01,110 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:01,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:01,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:01,312 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 10:12:01,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:01,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935311185] [2022-12-14 10:12:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:01,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:01,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:01,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:01,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 10:12:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:01,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:12:01,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:01,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:01,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:01,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935311185] [2022-12-14 10:12:01,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935311185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:01,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:01,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492298873] [2022-12-14 10:12:01,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:01,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:01,480 INFO L87 Difference]: Start difference. First operand 1310 states and 1553 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:01,539 INFO L93 Difference]: Finished difference Result 1282 states and 1497 transitions. [2022-12-14 10:12:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:01,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 10:12:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:01,543 INFO L225 Difference]: With dead ends: 1282 [2022-12-14 10:12:01,543 INFO L226 Difference]: Without dead ends: 1282 [2022-12-14 10:12:01,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:01,544 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1085 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:01,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2205 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:12:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-12-14 10:12:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2022-12-14 10:12:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 794 states have (on average 1.86272040302267) internal successors, (1479), 1274 states have internal predecessors, (1479), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1495 transitions. [2022-12-14 10:12:01,564 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1495 transitions. Word has length 20 [2022-12-14 10:12:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:01,564 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1495 transitions. [2022-12-14 10:12:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1495 transitions. [2022-12-14 10:12:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:12:01,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:01,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:01,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 10:12:01,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:01,766 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:01,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 10:12:01,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616616956] [2022-12-14 10:12:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:01,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:01,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:01,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 10:12:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:02,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:12:02,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:02,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:12:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:02,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:02,081 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:02,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616616956] [2022-12-14 10:12:02,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616616956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:02,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:02,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057894621] [2022-12-14 10:12:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:02,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:02,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:02,083 INFO L87 Difference]: Start difference. First operand 1280 states and 1495 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:04,127 INFO L93 Difference]: Finished difference Result 1879 states and 2228 transitions. [2022-12-14 10:12:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:12:04,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 10:12:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:04,136 INFO L225 Difference]: With dead ends: 1879 [2022-12-14 10:12:04,136 INFO L226 Difference]: Without dead ends: 1879 [2022-12-14 10:12:04,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:04,137 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1764 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:04,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1269 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 10:12:04,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-12-14 10:12:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1276. [2022-12-14 10:12:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 794 states have (on average 1.8526448362720402) internal successors, (1471), 1270 states have internal predecessors, (1471), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1487 transitions. [2022-12-14 10:12:04,147 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1487 transitions. Word has length 34 [2022-12-14 10:12:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:04,147 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1487 transitions. [2022-12-14 10:12:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1487 transitions. [2022-12-14 10:12:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:12:04,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:04,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:04,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 10:12:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:04,349 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:04,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:04,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 10:12:04,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:04,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540447205] [2022-12-14 10:12:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:04,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:04,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:04,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:04,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 10:12:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:04,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:12:04,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:04,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:12:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:04,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:04,626 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540447205] [2022-12-14 10:12:04,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540447205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:04,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:04,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121891485] [2022-12-14 10:12:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:04,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:04,627 INFO L87 Difference]: Start difference. First operand 1276 states and 1487 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:08,086 INFO L93 Difference]: Finished difference Result 2007 states and 2335 transitions. [2022-12-14 10:12:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:12:08,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 10:12:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:08,089 INFO L225 Difference]: With dead ends: 2007 [2022-12-14 10:12:08,089 INFO L226 Difference]: Without dead ends: 2007 [2022-12-14 10:12:08,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:08,090 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1230 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:08,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2576 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 10:12:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-12-14 10:12:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1272. [2022-12-14 10:12:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 794 states have (on average 1.8425692695214106) internal successors, (1463), 1266 states have internal predecessors, (1463), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1479 transitions. [2022-12-14 10:12:08,101 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1479 transitions. Word has length 34 [2022-12-14 10:12:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:08,101 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1479 transitions. [2022-12-14 10:12:08,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1479 transitions. [2022-12-14 10:12:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 10:12:08,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:08,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:08,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 10:12:08,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:08,303 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 10:12:08,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:08,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381426745] [2022-12-14 10:12:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:08,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:08,308 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:08,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 10:12:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:08,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:12:08,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:08,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:08,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:08,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381426745] [2022-12-14 10:12:08,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381426745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:08,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:08,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460905402] [2022-12-14 10:12:08,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:08,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:08,527 INFO L87 Difference]: Start difference. First operand 1272 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:08,559 INFO L93 Difference]: Finished difference Result 1260 states and 1459 transitions. [2022-12-14 10:12:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:08,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 10:12:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:08,562 INFO L225 Difference]: With dead ends: 1260 [2022-12-14 10:12:08,562 INFO L226 Difference]: Without dead ends: 1260 [2022-12-14 10:12:08,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:08,562 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1054 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:08,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2183 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:12:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-12-14 10:12:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-12-14 10:12:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 782 states have (on average 1.8452685421994885) internal successors, (1443), 1254 states have internal predecessors, (1443), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1459 transitions. [2022-12-14 10:12:08,575 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1459 transitions. Word has length 52 [2022-12-14 10:12:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:08,575 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1459 transitions. [2022-12-14 10:12:08,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1459 transitions. [2022-12-14 10:12:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 10:12:08,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:08,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:08,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 10:12:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:08,777 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 10:12:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:08,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819016940] [2022-12-14 10:12:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:08,784 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 10:12:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:09,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:12:09,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:09,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:12:09,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:12:09,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:12:09,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:12:09,450 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:12:09,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:12:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:09,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:09,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:09,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819016940] [2022-12-14 10:12:09,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819016940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:09,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:09,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216512016] [2022-12-14 10:12:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:09,461 INFO L87 Difference]: Start difference. First operand 1260 states and 1459 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:11,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:11,802 INFO L93 Difference]: Finished difference Result 1608 states and 1924 transitions. [2022-12-14 10:12:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:11,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 10:12:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:11,806 INFO L225 Difference]: With dead ends: 1608 [2022-12-14 10:12:11,809 INFO L226 Difference]: Without dead ends: 1608 [2022-12-14 10:12:11,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:11,809 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1754 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:11,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 791 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 10:12:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-12-14 10:12:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1190. [2022-12-14 10:12:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 750 states have (on average 1.7853333333333334) internal successors, (1339), 1184 states have internal predecessors, (1339), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1355 transitions. [2022-12-14 10:12:11,818 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1355 transitions. Word has length 60 [2022-12-14 10:12:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:11,819 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1355 transitions. [2022-12-14 10:12:11,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1355 transitions. [2022-12-14 10:12:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:12:11,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:11,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:11,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:12,021 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 10:12:12,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:12,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366494108] [2022-12-14 10:12:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:12,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:12,027 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:12,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 10:12:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:12,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:12:12,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:12,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:12:12,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:12:12,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 10:12:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:12,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:12,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366494108] [2022-12-14 10:12:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366494108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:12,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:12,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51511776] [2022-12-14 10:12:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:12,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:12:12,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:12:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:12,306 INFO L87 Difference]: Start difference. First operand 1190 states and 1355 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:14,621 INFO L93 Difference]: Finished difference Result 1189 states and 1354 transitions. [2022-12-14 10:12:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:12:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 10:12:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:14,627 INFO L225 Difference]: With dead ends: 1189 [2022-12-14 10:12:14,628 INFO L226 Difference]: Without dead ends: 1189 [2022-12-14 10:12:14,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:12:14,628 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 4 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:14,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2676 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 10:12:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-12-14 10:12:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2022-12-14 10:12:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 750 states have (on average 1.784) internal successors, (1338), 1183 states have internal predecessors, (1338), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1354 transitions. [2022-12-14 10:12:14,636 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1354 transitions. Word has length 65 [2022-12-14 10:12:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:14,636 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1354 transitions. [2022-12-14 10:12:14,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1354 transitions. [2022-12-14 10:12:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:12:14,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:14,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:14,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:14,838 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 10:12:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:14,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940610347] [2022-12-14 10:12:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:14,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:14,841 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:14,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 10:12:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:15,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 10:12:15,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:15,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:12:15,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:12:15,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:12:15,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-14 10:12:15,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 10:12:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:15,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:15,149 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:15,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940610347] [2022-12-14 10:12:15,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940610347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:15,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:15,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:15,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262863975] [2022-12-14 10:12:15,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:15,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:12:15,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:12:15,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:15,150 INFO L87 Difference]: Start difference. First operand 1189 states and 1354 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:17,939 INFO L93 Difference]: Finished difference Result 1188 states and 1353 transitions. [2022-12-14 10:12:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:12:17,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 10:12:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:17,942 INFO L225 Difference]: With dead ends: 1188 [2022-12-14 10:12:17,942 INFO L226 Difference]: Without dead ends: 1188 [2022-12-14 10:12:17,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:12:17,942 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:17,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2729 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 10:12:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-12-14 10:12:17,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2022-12-14 10:12:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 749 states have (on average 1.7850467289719627) internal successors, (1337), 1182 states have internal predecessors, (1337), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:12:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1353 transitions. [2022-12-14 10:12:17,950 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1353 transitions. Word has length 65 [2022-12-14 10:12:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:17,951 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1353 transitions. [2022-12-14 10:12:17,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1353 transitions. [2022-12-14 10:12:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 10:12:17,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:17,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:17,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-14 10:12:18,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:18,155 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1808778577, now seen corresponding path program 1 times [2022-12-14 10:12:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:18,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689085376] [2022-12-14 10:12:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:18,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:18,159 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:18,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 10:12:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:18,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:12:18,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:18,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:18,402 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:18,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689085376] [2022-12-14 10:12:18,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689085376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:18,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:18,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103528566] [2022-12-14 10:12:18,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:18,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:18,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:18,404 INFO L87 Difference]: Start difference. First operand 1188 states and 1353 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:12:18,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:18,435 INFO L93 Difference]: Finished difference Result 1191 states and 1357 transitions. [2022-12-14 10:12:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:18,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-12-14 10:12:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:18,438 INFO L225 Difference]: With dead ends: 1191 [2022-12-14 10:12:18,438 INFO L226 Difference]: Without dead ends: 1191 [2022-12-14 10:12:18,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:18,439 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:12:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-12-14 10:12:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2022-12-14 10:12:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 751 states have (on average 1.7842876165113182) internal successors, (1340), 1185 states have internal predecessors, (1340), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:12:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1357 transitions. [2022-12-14 10:12:18,452 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1357 transitions. Word has length 73 [2022-12-14 10:12:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:18,453 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1357 transitions. [2022-12-14 10:12:18,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:12:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1357 transitions. [2022-12-14 10:12:18,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:12:18,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:18,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:18,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 10:12:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:18,654 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash 483111072, now seen corresponding path program 1 times [2022-12-14 10:12:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:18,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305421413] [2022-12-14 10:12:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:18,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:18,661 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:18,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 10:12:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:18,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:12:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:18,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:19,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:19,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305421413] [2022-12-14 10:12:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305421413] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:19,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1998709418] [2022-12-14 10:12:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:19,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:12:19,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:12:19,028 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:12:19,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 10:12:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:19,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:12:19,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:19,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:19,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1998709418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:19,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342024453] [2022-12-14 10:12:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:19,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:19,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:19,463 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:19,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 10:12:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:12:19,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:19,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:19,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342024453] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:19,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:12:19,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 10:12:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462456750] [2022-12-14 10:12:19,692 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:12:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:12:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:12:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:12:19,694 INFO L87 Difference]: Start difference. First operand 1191 states and 1357 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:12:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:19,854 INFO L93 Difference]: Finished difference Result 1203 states and 1374 transitions. [2022-12-14 10:12:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:12:19,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-12-14 10:12:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:19,858 INFO L225 Difference]: With dead ends: 1203 [2022-12-14 10:12:19,858 INFO L226 Difference]: Without dead ends: 1203 [2022-12-14 10:12:19,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:12:19,859 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 12 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:19,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4168 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:19,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-12-14 10:12:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-12-14 10:12:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 760 states have (on average 1.7828947368421053) internal successors, (1355), 1194 states have internal predecessors, (1355), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:12:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1372 transitions. [2022-12-14 10:12:19,873 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1372 transitions. Word has length 74 [2022-12-14 10:12:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:19,873 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1372 transitions. [2022-12-14 10:12:19,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:12:19,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1372 transitions. [2022-12-14 10:12:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 10:12:19,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:19,874 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:19,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:20,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:20,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 10:12:20,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:20,476 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:12:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1705595153, now seen corresponding path program 2 times [2022-12-14 10:12:20,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:12:20,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935809904] [2022-12-14 10:12:20,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:12:20,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:12:20,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:12:20,479 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:12:20,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 10:12:20,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:12:20,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:12:20,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:12:20,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:20,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:21,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:12:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935809904] [2022-12-14 10:12:21,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935809904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [652950777] [2022-12-14 10:12:21,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:12:21,139 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:12:21,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:12:21,140 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:12:21,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-12-14 10:12:22,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:12:22,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:12:22,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:12:22,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:22,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:22,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [652950777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573048567] [2022-12-14 10:12:22,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:12:22,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:22,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:22,524 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:22,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 10:12:51,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:12:51,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:12:51,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 10:12:51,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:51,840 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:12:51,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:12:51,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:12:51,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:12:51,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:12:52,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 10:12:52,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 10:12:52,122 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650)))) is different from true [2022-12-14 10:12:52,194 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:12:52,205 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:12:52,246 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 10:12:52,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 10:12:52,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 10:12:52,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-14 10:12:52,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 10:12:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 10:12:52,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:52,664 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-12-14 10:12:52,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573048567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:52,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 10:12:52,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 10:12:52,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965482303] [2022-12-14 10:12:52,669 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 10:12:52,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 10:12:52,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:12:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 10:12:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=460, Unknown=15, NotChecked=188, Total=756 [2022-12-14 10:12:52,670 INFO L87 Difference]: Start difference. First operand 1201 states and 1372 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:12:54,915 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:12:59,371 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:13:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:16,427 INFO L93 Difference]: Finished difference Result 2758 states and 3315 transitions. [2022-12-14 10:13:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 10:13:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-14 10:13:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:16,432 INFO L225 Difference]: With dead ends: 2758 [2022-12-14 10:13:16,432 INFO L226 Difference]: Without dead ends: 2746 [2022-12-14 10:13:16,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=459, Invalid=2697, Unknown=60, NotChecked=690, Total=3906 [2022-12-14 10:13:16,434 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2022 mSDsluCounter, 11838 mSDsCounter, 0 mSdLazyCounter, 11760 mSolverCounterSat, 40 mSolverCounterUnsat, 610 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 12765 SdHoareTripleChecker+Invalid, 19593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11760 IncrementalHoareTripleChecker+Invalid, 610 IncrementalHoareTripleChecker+Unknown, 7183 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:16,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 12765 Invalid, 19593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 11760 Invalid, 610 Unknown, 7183 Unchecked, 17.8s Time] [2022-12-14 10:13:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-12-14 10:13:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1217. [2022-12-14 10:13:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 775 states have (on average 1.7703225806451612) internal successors, (1372), 1209 states have internal predecessors, (1372), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-14 10:13:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1390 transitions. [2022-12-14 10:13:16,454 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1390 transitions. Word has length 77 [2022-12-14 10:13:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:16,454 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1390 transitions. [2022-12-14 10:13:16,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:13:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1390 transitions. [2022-12-14 10:13:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 10:13:16,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:16,456 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:16,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-12-14 10:13:16,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-12-14 10:13:16,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 10:13:17,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:17,058 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:13:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:17,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221554, now seen corresponding path program 1 times [2022-12-14 10:13:17,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:13:17,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906572241] [2022-12-14 10:13:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:17,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:13:17,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:13:17,063 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:13:17,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 10:13:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:17,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:13:17,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:17,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:13:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:17,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:13:17,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906572241] [2022-12-14 10:13:17,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906572241] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:13:17,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1628767654] [2022-12-14 10:13:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:17,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:13:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:13:17,870 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:13:17,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-14 10:13:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:18,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:13:18,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:18,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:13:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:18,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1628767654] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:13:18,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103978691] [2022-12-14 10:13:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:13:18,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:18,551 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:18,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 10:13:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:13:18,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:13:18,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:18,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:13:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:19,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103978691] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:13:19,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:13:19,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-12-14 10:13:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497135407] [2022-12-14 10:13:19,650 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:13:19,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 10:13:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:13:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 10:13:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:13:19,652 INFO L87 Difference]: Start difference. First operand 1217 states and 1390 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:13:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:13:22,340 INFO L93 Difference]: Finished difference Result 1254 states and 1438 transitions. [2022-12-14 10:13:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 10:13:22,341 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2022-12-14 10:13:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:13:22,343 INFO L225 Difference]: With dead ends: 1254 [2022-12-14 10:13:22,343 INFO L226 Difference]: Without dead ends: 1246 [2022-12-14 10:13:22,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 10:13:22,344 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 48 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:13:22,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16755 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:13:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-12-14 10:13:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1228. [2022-12-14 10:13:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 787 states have (on average 1.7611181702668361) internal successors, (1386), 1221 states have internal predecessors, (1386), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:13:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1403 transitions. [2022-12-14 10:13:22,356 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1403 transitions. Word has length 83 [2022-12-14 10:13:22,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:13:22,356 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1403 transitions. [2022-12-14 10:13:22,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:13:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1403 transitions. [2022-12-14 10:13:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 10:13:22,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:13:22,357 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:13:22,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-12-14 10:13:22,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-12-14 10:13:22,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-14 10:13:22,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:22,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 10:13:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:13:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1527361039, now seen corresponding path program 3 times [2022-12-14 10:13:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:13:22,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417261858] [2022-12-14 10:13:22,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:13:22,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:13:22,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:13:22,963 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:13:22,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-14 10:13:24,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 10:13:24,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:13:24,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 10:13:24,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:24,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:13:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:27,072 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:13:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417261858] [2022-12-14 10:13:27,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417261858] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:13:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1517903709] [2022-12-14 10:13:27,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:13:27,072 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:13:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:13:27,073 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:13:27,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-12-14 10:13:55,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 10:13:55,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:13:55,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 10:13:55,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:13:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:55,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:13:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:13:56,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1517903709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:13:56,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807293202] [2022-12-14 10:13:56,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:13:56,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:13:56,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:13:56,251 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:13:56,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f60a1c-b333-4673-a318-ff634bb1e3cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process