./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW --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 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- 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-4e7fbc6 [2022-11-23 14:27:11,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:27:11,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:27:11,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:27:11,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:27:11,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:27:11,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:27:11,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:27:11,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:27:11,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:27:11,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:27:11,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:27:11,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:27:11,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:27:11,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:27:11,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:27:11,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:27:11,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:27:11,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:27:11,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:27:11,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:27:11,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:27:11,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:27:11,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:27:11,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:27:11,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:27:11,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:27:11,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:27:11,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:27:11,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:27:11,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:27:11,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:27:11,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:27:11,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:27:11,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:27:11,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:27:11,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:27:11,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:27:11,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:27:11,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:27:11,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:27:11,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:27:11,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:27:11,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:27:11,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:27:11,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:27:11,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:27:11,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:27:11,362 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:27:11,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:27:11,362 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:27:11,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:27:11,363 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:27:11,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:27:11,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:27:11,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:27:11,364 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:27:11,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:27:11,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:27:11,365 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:27:11,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:27:11,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:27:11,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:27:11,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:27:11,367 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:27:11,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:27:11,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:27:11,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:27:11,368 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:27:11,368 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:27:11,368 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:27:11,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:27:11,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:27:11,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:27:11,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:27:11,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:27:11,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:27:11,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:11,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:27:11,370 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:27:11,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:27:11,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:27:11,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:27:11,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:27:11,371 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_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2022-11-23 14:27:11,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:27:11,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:27:11,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:27:11,655 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:27:11,656 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:27:11,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-23 14:27:14,822 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:27:15,151 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:27:15,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-23 14:27:15,180 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data/f0a23dddb/91befe3d9ab1445486d485c731565aa4/FLAG0467327b6 [2022-11-23 14:27:15,197 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data/f0a23dddb/91befe3d9ab1445486d485c731565aa4 [2022-11-23 14:27:15,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:27:15,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:27:15,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:15,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:27:15,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:27:15,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:15" (1/1) ... [2022-11-23 14:27:15,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de61b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:15, skipping insertion in model container [2022-11-23 14:27:15,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:15" (1/1) ... [2022-11-23 14:27:15,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:27:15,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:27:15,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:15,844 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-23 14:27:15,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45bd141b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:15, skipping insertion in model container [2022-11-23 14:27:15,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:15,846 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 14:27:15,848 INFO L158 Benchmark]: Toolchain (without parser) took 645.73ms. Allocated memory is still 134.2MB. Free memory was 101.8MB in the beginning and 86.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:27:15,849 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:27:15,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.20ms. Allocated memory is still 134.2MB. Free memory was 101.2MB in the beginning and 86.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:27:15,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.20ms. Allocated memory is still 134.2MB. Free memory was 101.2MB in the beginning and 86.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW --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 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- 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-4e7fbc6 [2022-11-23 14:27:18,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:27:18,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:27:18,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:27:18,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:27:18,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:27:18,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:27:18,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:27:18,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:27:18,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:27:18,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:27:18,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:27:18,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:27:18,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:27:18,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:27:18,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:27:18,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:27:18,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:27:18,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:27:18,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:27:18,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:27:18,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:27:18,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:27:18,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:27:18,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:27:18,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:27:18,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:27:18,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:27:18,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:27:18,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:27:18,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:27:18,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:27:18,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:27:18,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:27:18,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:27:18,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:27:18,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:27:18,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:27:18,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:27:18,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:27:18,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:27:18,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 14:27:18,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:27:18,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:27:18,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:27:18,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:27:18,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:27:18,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:27:18,389 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:27:18,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:27:18,390 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:27:18,390 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:27:18,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:27:18,391 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:27:18,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:27:18,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:27:18,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:27:18,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:27:18,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:27:18,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:27:18,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:27:18,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:27:18,394 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:27:18,394 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:27:18,394 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:27:18,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:27:18,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:27:18,395 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:27:18,395 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:27:18,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:27:18,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:27:18,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:27:18,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:27:18,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:27:18,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:18,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:27:18,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:27:18,397 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:27:18,397 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:18,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:27:18,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:27:18,398 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_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2022-11-23 14:27:18,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:27:18,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:27:18,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:27:18,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:27:18,837 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:27:18,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-23 14:27:21,941 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:27:22,255 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:27:22,256 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-23 14:27:22,271 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data/c3f7eb079/53fc822f13b4413dadd3db043508ccd4/FLAG51fa32500 [2022-11-23 14:27:22,298 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/data/c3f7eb079/53fc822f13b4413dadd3db043508ccd4 [2022-11-23 14:27:22,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:27:22,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:27:22,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:22,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:27:22,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:27:22,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:22" (1/1) ... [2022-11-23 14:27:22,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265e34e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:22, skipping insertion in model container [2022-11-23 14:27:22,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:22" (1/1) ... [2022-11-23 14:27:22,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:27:22,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:27:22,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:22,970 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 14:27:22,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:27:23,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:23,057 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:27:23,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:23,221 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:27:23,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23 WrapperNode [2022-11-23 14:27:23,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:23,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:27:23,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:27:23,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:27:23,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,318 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 184 [2022-11-23 14:27:23,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:27:23,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:27:23,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:27:23,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:27:23,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:27:23,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:27:23,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:27:23,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:27:23,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (1/1) ... [2022-11-23 14:27:23,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:27:23,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:27:23,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:27:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:27:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-23 14:27:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-23 14:27:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-23 14:27:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-23 14:27:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:27:23,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:27:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:27:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:27:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-23 14:27:23,467 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-23 14:27:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:27:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:27:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:27:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:27:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:27:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:27:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-23 14:27:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-23 14:27:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 14:27:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 14:27:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:27:23,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:27:23,680 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:27:23,682 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:27:24,637 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:27:24,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:27:24,652 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:27:24,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:24 BoogieIcfgContainer [2022-11-23 14:27:24,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:27:24,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:27:24,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:27:24,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:27:24,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:27:22" (1/3) ... [2022-11-23 14:27:24,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a9c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:27:24, skipping insertion in model container [2022-11-23 14:27:24,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:23" (2/3) ... [2022-11-23 14:27:24,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a9c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:27:24, skipping insertion in model container [2022-11-23 14:27:24,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:24" (3/3) ... [2022-11-23 14:27:24,668 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2022-11-23 14:27:24,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:27:24,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-11-23 14:27:24,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:27:24,764 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;@7f39ee32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:27:24,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-23 14:27:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 14:27:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:27:24,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:24,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:24,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385922, now seen corresponding path program 1 times [2022-11-23 14:27:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:24,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567400799] [2022-11-23 14:27:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:24,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:24,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:24,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:27:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:24,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:27:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:25,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:27:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:25,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:25,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:25,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567400799] [2022-11-23 14:27:25,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567400799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:25,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:25,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811807222] [2022-11-23 14:27:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:25,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:27:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:27:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:25,142 INFO L87 Difference]: Start difference. First operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:26,155 INFO L93 Difference]: Finished difference Result 225 states and 241 transitions. [2022-11-23 14:27:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:27:26,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-23 14:27:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:26,168 INFO L225 Difference]: With dead ends: 225 [2022-11-23 14:27:26,169 INFO L226 Difference]: Without dead ends: 221 [2022-11-23 14:27:26,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:26,174 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 28 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:26,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 813 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:27:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-23 14:27:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-11-23 14:27:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 188 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-23 14:27:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2022-11-23 14:27:26,249 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 12 [2022-11-23 14:27:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:26,250 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2022-11-23 14:27:26,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2022-11-23 14:27:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:27:26,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:26,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:26,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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)] Ended with exit code 0 [2022-11-23 14:27:26,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:26,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385921, now seen corresponding path program 1 times [2022-11-23 14:27:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:26,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563837248] [2022-11-23 14:27:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:26,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:26,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:27:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:27:26,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:26,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:27:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:26,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:26,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:26,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563837248] [2022-11-23 14:27:26,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563837248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:26,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:26,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:27:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534069940] [2022-11-23 14:27:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:26,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:26,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:26,779 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:27,961 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2022-11-23 14:27:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:27:27,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-23 14:27:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:27,968 INFO L225 Difference]: With dead ends: 230 [2022-11-23 14:27:27,968 INFO L226 Difference]: Without dead ends: 230 [2022-11-23 14:27:27,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:27,969 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 35 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:27,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1056 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:27:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-23 14:27:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 205. [2022-11-23 14:27:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-23 14:27:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2022-11-23 14:27:27,986 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 12 [2022-11-23 14:27:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:27,987 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2022-11-23 14:27:27,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2022-11-23 14:27:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:27:27,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:27,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:28,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:28,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:28,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash -95575587, now seen corresponding path program 1 times [2022-11-23 14:27:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:28,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648217858] [2022-11-23 14:27:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:28,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:28,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:28,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 14:27:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:28,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:27:28,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:28,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:28,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:28,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648217858] [2022-11-23 14:27:28,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648217858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:28,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:28,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:28,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794825450] [2022-11-23 14:27:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:28,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:28,386 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:28,428 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2022-11-23 14:27:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:27:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-23 14:27:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:28,430 INFO L225 Difference]: With dead ends: 217 [2022-11-23 14:27:28,430 INFO L226 Difference]: Without dead ends: 217 [2022-11-23 14:27:28,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:28,432 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:28,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 812 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:27:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-23 14:27:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2022-11-23 14:27:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.761467889908257) internal successors, (192), 180 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-23 14:27:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 209 transitions. [2022-11-23 14:27:28,442 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 209 transitions. Word has length 12 [2022-11-23 14:27:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:28,443 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 209 transitions. [2022-11-23 14:27:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 209 transitions. [2022-11-23 14:27:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:27:28,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:28,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:28,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:28,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:28,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:28,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1838471554, now seen corresponding path program 1 times [2022-11-23 14:27:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:28,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007971882] [2022-11-23 14:27:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:28,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 14:27:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:28,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:28,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:28,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:28,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:28,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007971882] [2022-11-23 14:27:28,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007971882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:28,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:28,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:28,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070848063] [2022-11-23 14:27:28,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:28,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:28,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:28,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:28,775 INFO L87 Difference]: Start difference. First operand 196 states and 209 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:28,822 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2022-11-23 14:27:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:27:28,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-11-23 14:27:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:28,824 INFO L225 Difference]: With dead ends: 217 [2022-11-23 14:27:28,824 INFO L226 Difference]: Without dead ends: 217 [2022-11-23 14:27:28,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:28,825 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 121 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:28,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 750 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:27:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-23 14:27:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2022-11-23 14:27:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-23 14:27:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2022-11-23 14:27:28,835 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 12 [2022-11-23 14:27:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:28,835 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2022-11-23 14:27:28,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2022-11-23 14:27:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:27:28,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:28,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:28,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:27:29,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:29,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -95661219, now seen corresponding path program 1 times [2022-11-23 14:27:29,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236166023] [2022-11-23 14:27:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:29,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:29,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:29,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:29,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:27:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:29,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:29,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:29,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:29,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:29,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236166023] [2022-11-23 14:27:29,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236166023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:29,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:29,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177942153] [2022-11-23 14:27:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:29,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:27:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:27:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:29,159 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:29,211 INFO L93 Difference]: Finished difference Result 201 states and 212 transitions. [2022-11-23 14:27:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:27:29,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2022-11-23 14:27:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:29,213 INFO L225 Difference]: With dead ends: 201 [2022-11-23 14:27:29,213 INFO L226 Difference]: Without dead ends: 201 [2022-11-23 14:27:29,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:29,222 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 104 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:29,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 702 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:27:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-23 14:27:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2022-11-23 14:27:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7387387387387387) internal successors, (193), 182 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-23 14:27:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2022-11-23 14:27:29,248 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 12 [2022-11-23 14:27:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:29,267 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2022-11-23 14:27:29,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2022-11-23 14:27:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:27:29,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:29,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:29,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:29,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:29,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1329489612, now seen corresponding path program 1 times [2022-11-23 14:27:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:29,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299155420] [2022-11-23 14:27:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:29,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:29,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:29,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 14:27:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:29,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:29,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:29,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:29,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:29,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299155420] [2022-11-23 14:27:29,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299155420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:29,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:29,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:27:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497390843] [2022-11-23 14:27:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:29,578 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:30,066 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2022-11-23 14:27:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:30,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-11-23 14:27:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:30,068 INFO L225 Difference]: With dead ends: 210 [2022-11-23 14:27:30,068 INFO L226 Difference]: Without dead ends: 202 [2022-11-23 14:27:30,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:30,069 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 51 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:30,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 366 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-23 14:27:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-11-23 14:27:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 106 states have (on average 1.7641509433962264) internal successors, (187), 177 states have internal predecessors, (187), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-23 14:27:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 203 transitions. [2022-11-23 14:27:30,076 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 203 transitions. Word has length 13 [2022-11-23 14:27:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:30,076 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 203 transitions. [2022-11-23 14:27:30,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:27:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 203 transitions. [2022-11-23 14:27:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:27:30,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:30,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:27:30,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:30,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:30,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash -317607953, now seen corresponding path program 1 times [2022-11-23 14:27:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:30,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310528315] [2022-11-23 14:27:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:30,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:30,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:30,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:30,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 14:27:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:30,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 14:27:30,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:30,510 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2022-11-23 14:27:30,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:30,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:27:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:30,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:30,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:30,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310528315] [2022-11-23 14:27:30,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310528315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:30,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:30,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:30,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607336308] [2022-11-23 14:27:30,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:30,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:30,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-23 14:27:30,720 INFO L87 Difference]: Start difference. First operand 192 states and 203 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:27:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:31,978 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2022-11-23 14:27:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:31,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-23 14:27:31,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:31,980 INFO L225 Difference]: With dead ends: 243 [2022-11-23 14:27:31,980 INFO L226 Difference]: Without dead ends: 243 [2022-11-23 14:27:31,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2022-11-23 14:27:31,981 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 389 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:31,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 205 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 527 Invalid, 0 Unknown, 236 Unchecked, 1.1s Time] [2022-11-23 14:27:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-23 14:27:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 201. [2022-11-23 14:27:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 185 states have internal predecessors, (200), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-23 14:27:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 218 transitions. [2022-11-23 14:27:32,001 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 218 transitions. Word has length 16 [2022-11-23 14:27:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:32,001 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 218 transitions. [2022-11-23 14:27:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:27:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 218 transitions. [2022-11-23 14:27:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:27:32,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:32,002 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] [2022-11-23 14:27:32,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:32,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -778576348, now seen corresponding path program 1 times [2022-11-23 14:27:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:32,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771925959] [2022-11-23 14:27:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:32,216 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 [2022-11-23 14:27:32,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:32,218 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:32,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 14:27:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:32,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:27:32,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:32,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:27:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:32,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:32,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:32,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771925959] [2022-11-23 14:27:32,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771925959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:32,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:32,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:32,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060034332] [2022-11-23 14:27:32,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:27:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:32,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:27:32,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:27:32,402 INFO L87 Difference]: Start difference. First operand 201 states and 218 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:33,168 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2022-11-23 14:27:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:27:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-23 14:27:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:33,170 INFO L225 Difference]: With dead ends: 250 [2022-11-23 14:27:33,170 INFO L226 Difference]: Without dead ends: 250 [2022-11-23 14:27:33,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:33,171 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 63 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:33,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 623 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:27:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-23 14:27:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 225. [2022-11-23 14:27:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 209 states have internal predecessors, (248), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-23 14:27:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2022-11-23 14:27:33,180 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 25 [2022-11-23 14:27:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:33,180 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2022-11-23 14:27:33,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2022-11-23 14:27:33,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:27:33,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:33,183 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] [2022-11-23 14:27:33,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:27:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:33,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:33,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash -778576347, now seen corresponding path program 1 times [2022-11-23 14:27:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:33,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023827306] [2022-11-23 14:27:33,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:33,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:33,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:33,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:33,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 14:27:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:33,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:27:33,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:33,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:27:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:33,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:33,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:33,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023827306] [2022-11-23 14:27:33,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023827306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:33,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:33,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:27:33,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761938902] [2022-11-23 14:27:33,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:33,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:27:33,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:27:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:27:33,646 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:34,689 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2022-11-23 14:27:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:27:34,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-23 14:27:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:34,692 INFO L225 Difference]: With dead ends: 282 [2022-11-23 14:27:34,692 INFO L226 Difference]: Without dead ends: 282 [2022-11-23 14:27:34,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:34,693 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 97 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:34,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 621 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:27:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-23 14:27:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2022-11-23 14:27:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 210 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2022-11-23 14:27:34,710 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 25 [2022-11-23 14:27:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:34,713 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2022-11-23 14:27:34,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2022-11-23 14:27:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 14:27:34,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:34,716 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] [2022-11-23 14:27:34,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:34,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:34,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash -887499840, now seen corresponding path program 1 times [2022-11-23 14:27:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:34,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374006972] [2022-11-23 14:27:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:34,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:34,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:34,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:34,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-23 14:27:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:35,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:27:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:35,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:35,106 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374006972] [2022-11-23 14:27:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374006972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:35,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:35,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847979685] [2022-11-23 14:27:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:35,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:27:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:27:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:27:35,108 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:35,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:35,239 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2022-11-23 14:27:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:27:35,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-23 14:27:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:35,241 INFO L225 Difference]: With dead ends: 227 [2022-11-23 14:27:35,241 INFO L226 Difference]: Without dead ends: 227 [2022-11-23 14:27:35,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:35,242 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 112 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:35,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 800 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:27:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-23 14:27:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-23 14:27:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 210 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2022-11-23 14:27:35,251 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 27 [2022-11-23 14:27:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:35,252 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2022-11-23 14:27:35,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2022-11-23 14:27:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 14:27:35,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:35,259 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] [2022-11-23 14:27:35,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:35,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:35,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash -542371696, now seen corresponding path program 1 times [2022-11-23 14:27:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:35,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507142737] [2022-11-23 14:27:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:35,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:35,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:35,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:35,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-23 14:27:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:35,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:27:35,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:35,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:27:35,752 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:27:35,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:27:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:35,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:35,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507142737] [2022-11-23 14:27:35,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507142737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:35,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:35,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:27:35,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375107423] [2022-11-23 14:27:35,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:35,854 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:27:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:36,974 INFO L93 Difference]: Finished difference Result 240 states and 280 transitions. [2022-11-23 14:27:36,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:27:36,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-23 14:27:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:36,976 INFO L225 Difference]: With dead ends: 240 [2022-11-23 14:27:36,977 INFO L226 Difference]: Without dead ends: 240 [2022-11-23 14:27:36,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:36,978 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 187 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:36,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 555 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:27:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-23 14:27:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 223. [2022-11-23 14:27:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 206 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 262 transitions. [2022-11-23 14:27:36,986 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 262 transitions. Word has length 33 [2022-11-23 14:27:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:36,986 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 262 transitions. [2022-11-23 14:27:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:27:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 262 transitions. [2022-11-23 14:27:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 14:27:36,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:36,988 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] [2022-11-23 14:27:37,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:37,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash -542371695, now seen corresponding path program 1 times [2022-11-23 14:27:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685623868] [2022-11-23 14:27:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:37,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:37,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:37,203 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:37,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-23 14:27:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:37,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 14:27:37,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:37,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:27:37,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:27:37,497 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_198 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_198))) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-23 14:27:37,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:37,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:27:37,575 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:27:37,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-23 14:27:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:37,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:37,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:37,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685623868] [2022-11-23 14:27:37,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685623868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:37,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:37,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507337138] [2022-11-23 14:27:37,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:37,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:27:37,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:27:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-23 14:27:37,671 INFO L87 Difference]: Start difference. First operand 223 states and 262 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:27:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:38,668 INFO L93 Difference]: Finished difference Result 278 states and 305 transitions. [2022-11-23 14:27:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:27:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-23 14:27:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:38,672 INFO L225 Difference]: With dead ends: 278 [2022-11-23 14:27:38,672 INFO L226 Difference]: Without dead ends: 278 [2022-11-23 14:27:38,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2022-11-23 14:27:38,673 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 178 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:38,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 366 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 396 Invalid, 0 Unknown, 217 Unchecked, 1.0s Time] [2022-11-23 14:27:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-23 14:27:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2022-11-23 14:27:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 144 states have (on average 1.6458333333333333) internal successors, (237), 206 states have internal predecessors, (237), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 258 transitions. [2022-11-23 14:27:38,681 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 258 transitions. Word has length 33 [2022-11-23 14:27:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 258 transitions. [2022-11-23 14:27:38,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:27:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 258 transitions. [2022-11-23 14:27:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 14:27:38,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:38,682 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] [2022-11-23 14:27:38,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:38,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:38,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1528197373, now seen corresponding path program 1 times [2022-11-23 14:27:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:38,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695664034] [2022-11-23 14:27:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:38,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:38,901 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:38,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-23 14:27:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:39,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:39,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:39,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:39,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:39,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695664034] [2022-11-23 14:27:39,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695664034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:39,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:39,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:27:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396150230] [2022-11-23 14:27:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:39,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:39,066 INFO L87 Difference]: Start difference. First operand 223 states and 258 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:39,099 INFO L93 Difference]: Finished difference Result 265 states and 304 transitions. [2022-11-23 14:27:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-23 14:27:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:39,103 INFO L225 Difference]: With dead ends: 265 [2022-11-23 14:27:39,103 INFO L226 Difference]: Without dead ends: 265 [2022-11-23 14:27:39,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:39,108 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 37 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:39,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 568 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:27:39,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-23 14:27:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 227. [2022-11-23 14:27:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.6283783783783783) internal successors, (241), 210 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 262 transitions. [2022-11-23 14:27:39,131 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 262 transitions. Word has length 35 [2022-11-23 14:27:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:39,132 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 262 transitions. [2022-11-23 14:27:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 262 transitions. [2022-11-23 14:27:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:39,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:39,134 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] [2022-11-23 14:27:39,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:39,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash -129478379, now seen corresponding path program 1 times [2022-11-23 14:27:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:39,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615306934] [2022-11-23 14:27:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:39,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:39,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:39,349 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:39,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-23 14:27:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:39,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:27:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:40,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:40,025 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:40,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615306934] [2022-11-23 14:27:40,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615306934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:40,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:40,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245783324] [2022-11-23 14:27:40,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:40,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:40,027 INFO L87 Difference]: Start difference. First operand 227 states and 262 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:27:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:40,604 INFO L93 Difference]: Finished difference Result 225 states and 259 transitions. [2022-11-23 14:27:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:27:40,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-23 14:27:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:40,606 INFO L225 Difference]: With dead ends: 225 [2022-11-23 14:27:40,606 INFO L226 Difference]: Without dead ends: 225 [2022-11-23 14:27:40,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:27:40,607 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 334 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 679 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-23 14:27:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-23 14:27:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 148 states have (on average 1.6081081081081081) internal successors, (238), 208 states have internal predecessors, (238), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 259 transitions. [2022-11-23 14:27:40,614 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 259 transitions. Word has length 36 [2022-11-23 14:27:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:40,614 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 259 transitions. [2022-11-23 14:27:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:27:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 259 transitions. [2022-11-23 14:27:40,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 14:27:40,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:40,615 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] [2022-11-23 14:27:40,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:40,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 189837640, now seen corresponding path program 1 times [2022-11-23 14:27:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:40,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532160176] [2022-11-23 14:27:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:40,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:40,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:40,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-23 14:27:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:41,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:41,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:41,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:41,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:41,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532160176] [2022-11-23 14:27:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532160176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:41,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:41,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:27:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337756960] [2022-11-23 14:27:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:41,030 INFO L87 Difference]: Start difference. First operand 225 states and 259 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:41,062 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2022-11-23 14:27:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:41,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-23 14:27:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:41,065 INFO L225 Difference]: With dead ends: 248 [2022-11-23 14:27:41,065 INFO L226 Difference]: Without dead ends: 248 [2022-11-23 14:27:41,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:41,068 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 43 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:41,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 560 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:27:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-23 14:27:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 227. [2022-11-23 14:27:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 150 states have (on average 1.6) internal successors, (240), 210 states have internal predecessors, (240), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 261 transitions. [2022-11-23 14:27:41,077 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 261 transitions. Word has length 40 [2022-11-23 14:27:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:41,078 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 261 transitions. [2022-11-23 14:27:41,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 261 transitions. [2022-11-23 14:27:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:27:41,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:41,081 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] [2022-11-23 14:27:41,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:41,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:41,304 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:41,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974084, now seen corresponding path program 1 times [2022-11-23 14:27:41,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:41,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826918678] [2022-11-23 14:27:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:41,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:41,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:41,306 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:41,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-23 14:27:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:41,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:27:41,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:41,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:27:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:41,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:41,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:41,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826918678] [2022-11-23 14:27:41,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826918678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:41,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:41,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85907842] [2022-11-23 14:27:41,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:41,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:27:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:27:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:41,650 INFO L87 Difference]: Start difference. First operand 227 states and 261 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:42,666 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2022-11-23 14:27:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:27:42,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-23 14:27:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:42,668 INFO L225 Difference]: With dead ends: 282 [2022-11-23 14:27:42,668 INFO L226 Difference]: Without dead ends: 282 [2022-11-23 14:27:42,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:27:42,669 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 115 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:42,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 795 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:27:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-23 14:27:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2022-11-23 14:27:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 150 states have (on average 1.58) internal successors, (237), 209 states have internal predecessors, (237), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 258 transitions. [2022-11-23 14:27:42,677 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 258 transitions. Word has length 42 [2022-11-23 14:27:42,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:42,678 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 258 transitions. [2022-11-23 14:27:42,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:42,678 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 258 transitions. [2022-11-23 14:27:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:27:42,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:42,679 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] [2022-11-23 14:27:42,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:42,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:42,887 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974083, now seen corresponding path program 1 times [2022-11-23 14:27:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:42,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451028556] [2022-11-23 14:27:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:42,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:42,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:42,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-23 14:27:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:43,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 14:27:43,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:43,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:27:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:43,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:43,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:43,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451028556] [2022-11-23 14:27:43,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451028556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:43,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:43,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:43,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654655850] [2022-11-23 14:27:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:27:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:27:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:43,358 INFO L87 Difference]: Start difference. First operand 226 states and 258 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:44,657 INFO L93 Difference]: Finished difference Result 308 states and 338 transitions. [2022-11-23 14:27:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:44,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-23 14:27:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:44,659 INFO L225 Difference]: With dead ends: 308 [2022-11-23 14:27:44,659 INFO L226 Difference]: Without dead ends: 308 [2022-11-23 14:27:44,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:27:44,660 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 138 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 825 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:27:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-23 14:27:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 226. [2022-11-23 14:27:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 150 states have (on average 1.5666666666666667) internal successors, (235), 209 states have internal predecessors, (235), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-23 14:27:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2022-11-23 14:27:44,668 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 42 [2022-11-23 14:27:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:44,669 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2022-11-23 14:27:44,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:27:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2022-11-23 14:27:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:27:44,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:44,670 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] [2022-11-23 14:27:44,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:44,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:44,878 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419631, now seen corresponding path program 1 times [2022-11-23 14:27:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:44,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972630970] [2022-11-23 14:27:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:44,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:44,881 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:44,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-23 14:27:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:45,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 14:27:45,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:45,271 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:27:45,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-23 14:27:45,610 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-23 14:27:45,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 40 [2022-11-23 14:27:45,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 14:27:45,887 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 14:27:45,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-23 14:27:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:46,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:46,642 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:27:46,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 43 [2022-11-23 14:27:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:46,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:46,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972630970] [2022-11-23 14:27:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972630970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:46,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:46,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 14:27:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006107579] [2022-11-23 14:27:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 14:27:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 14:27:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:46,746 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:27:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:50,491 INFO L93 Difference]: Finished difference Result 295 states and 328 transitions. [2022-11-23 14:27:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:27:50,492 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-23 14:27:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:50,494 INFO L225 Difference]: With dead ends: 295 [2022-11-23 14:27:50,494 INFO L226 Difference]: Without dead ends: 295 [2022-11-23 14:27:50,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:27:50,495 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 600 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 68 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:50,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 752 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 973 Invalid, 5 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 14:27:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-23 14:27:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 248. [2022-11-23 14:27:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 170 states have (on average 1.5647058823529412) internal successors, (266), 227 states have internal predecessors, (266), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-23 14:27:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 290 transitions. [2022-11-23 14:27:50,503 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 290 transitions. Word has length 42 [2022-11-23 14:27:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:50,504 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 290 transitions. [2022-11-23 14:27:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:27:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 290 transitions. [2022-11-23 14:27:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:27:50,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:50,505 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] [2022-11-23 14:27:50,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:50,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:50,718 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:27:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419632, now seen corresponding path program 1 times [2022-11-23 14:27:50,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:50,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132571561] [2022-11-23 14:27:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:50,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:50,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:50,720 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:50,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:27:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:50,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 14:27:50,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:51,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:27:51,172 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-23 14:27:51,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-23 14:27:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:27:51,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:27:51,655 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:27:51,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:27:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:51,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:51,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:51,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132571561] [2022-11-23 14:27:51,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132571561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:51,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:51,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:27:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240826398] [2022-11-23 14:27:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:51,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:27:51,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:51,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:27:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=106, Unknown=1, NotChecked=0, Total=132 [2022-11-23 14:27:51,909 INFO L87 Difference]: Start difference. First operand 248 states and 290 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:27:57,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:27:59,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:02,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:04,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:07,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:09,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:11,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:13,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:15,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:17,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:20,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:24,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:26,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:28,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:31,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:33,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:35,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:35,556 INFO L93 Difference]: Finished difference Result 286 states and 320 transitions. [2022-11-23 14:28:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:28:35,559 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-23 14:28:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:35,561 INFO L225 Difference]: With dead ends: 286 [2022-11-23 14:28:35,561 INFO L226 Difference]: Without dead ends: 286 [2022-11-23 14:28:35,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=98, Invalid=360, Unknown=4, NotChecked=0, Total=462 [2022-11-23 14:28:35,562 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 392 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 53 mSolverCounterUnsat, 59 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 59 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:35,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 465 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1142 Invalid, 59 Unknown, 0 Unchecked, 39.0s Time] [2022-11-23 14:28:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-23 14:28:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2022-11-23 14:28:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 170 states have (on average 1.5411764705882354) internal successors, (262), 225 states have internal predecessors, (262), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-23 14:28:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 286 transitions. [2022-11-23 14:28:35,569 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 286 transitions. Word has length 42 [2022-11-23 14:28:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:35,569 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 286 transitions. [2022-11-23 14:28:35,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:28:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 286 transitions. [2022-11-23 14:28:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 14:28:35,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:35,570 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] [2022-11-23 14:28:35,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:28:35,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:35,771 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:28:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1016480774, now seen corresponding path program 1 times [2022-11-23 14:28:35,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:28:35,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588698958] [2022-11-23 14:28:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:35,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:28:35,773 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:28:35,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-23 14:28:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:35,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:28:35,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:35,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:28:35,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:28:35,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588698958] [2022-11-23 14:28:35,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588698958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:35,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:35,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:28:35,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200018460] [2022-11-23 14:28:35,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:35,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:28:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:28:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:28:35,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:28:35,984 INFO L87 Difference]: Start difference. First operand 246 states and 286 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:28:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:36,019 INFO L93 Difference]: Finished difference Result 268 states and 307 transitions. [2022-11-23 14:28:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:28:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-23 14:28:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:36,022 INFO L225 Difference]: With dead ends: 268 [2022-11-23 14:28:36,022 INFO L226 Difference]: Without dead ends: 268 [2022-11-23 14:28:36,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:28:36,025 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 47 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:36,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 541 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:28:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-23 14:28:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 248. [2022-11-23 14:28:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 172 states have (on average 1.5290697674418605) internal successors, (263), 227 states have internal predecessors, (263), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-23 14:28:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 287 transitions. [2022-11-23 14:28:36,042 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 287 transitions. Word has length 43 [2022-11-23 14:28:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:36,043 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 287 transitions. [2022-11-23 14:28:36,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:28:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 287 transitions. [2022-11-23 14:28:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:28:36,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:36,046 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] [2022-11-23 14:28:36,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-23 14:28:36,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:36,258 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:28:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527314, now seen corresponding path program 1 times [2022-11-23 14:28:36,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:28:36,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425133151] [2022-11-23 14:28:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:36,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:28:36,261 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:28:36,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-23 14:28:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 14:28:36,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:36,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:28:36,797 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 11 treesize of output 7 [2022-11-23 14:28:36,929 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-23 14:28:36,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-23 14:28:37,022 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 14:28:37,022 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 19 treesize of output 11 [2022-11-23 14:28:37,609 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-23 14:28:37,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-23 14:28:38,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-23 14:28:38,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-23 14:28:39,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:39,171 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 14:28:39,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 43 [2022-11-23 14:28:39,428 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 11 [2022-11-23 14:28:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:39,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:28:39,601 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:28:39,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425133151] [2022-11-23 14:28:39,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425133151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:39,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:39,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 14:28:39,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281854654] [2022-11-23 14:28:39,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:39,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 14:28:39,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:28:39,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 14:28:39,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:28:39,604 INFO L87 Difference]: Start difference. First operand 248 states and 287 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:28:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:46,101 INFO L93 Difference]: Finished difference Result 504 states and 580 transitions. [2022-11-23 14:28:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:28:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-23 14:28:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:46,104 INFO L225 Difference]: With dead ends: 504 [2022-11-23 14:28:46,104 INFO L226 Difference]: Without dead ends: 504 [2022-11-23 14:28:46,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2022-11-23 14:28:46,105 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 493 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 45 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:46,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1683 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1504 Invalid, 12 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 14:28:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-23 14:28:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 400. [2022-11-23 14:28:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5584415584415585) internal successors, (480), 366 states have internal predecessors, (480), 17 states have call successors, (17), 16 states have call predecessors, (17), 18 states have return successors, (25), 17 states have call predecessors, (25), 17 states have call successors, (25) [2022-11-23 14:28:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 522 transitions. [2022-11-23 14:28:46,119 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 522 transitions. Word has length 45 [2022-11-23 14:28:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:46,120 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 522 transitions. [2022-11-23 14:28:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:28:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 522 transitions. [2022-11-23 14:28:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:28:46,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:46,121 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] [2022-11-23 14:28:46,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:46,334 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:28:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527313, now seen corresponding path program 1 times [2022-11-23 14:28:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:28:46,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814115666] [2022-11-23 14:28:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:28:46,336 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:28:46,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:28:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:46,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-23 14:28:46,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:46,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:28:46,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:28:47,386 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 11 treesize of output 7 [2022-11-23 14:28:47,405 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 11 treesize of output 7 [2022-11-23 14:28:47,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:47,591 INFO L321 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-23 14:28:47,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 43 [2022-11-23 14:28:47,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:47,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-23 14:28:47,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2022-11-23 14:28:47,836 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-23 14:28:47,837 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 19 treesize of output 11 [2022-11-23 14:28:48,476 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 14:28:48,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-23 14:28:48,546 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-23 14:28:48,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-23 14:28:49,262 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 23 treesize of output 23 [2022-11-23 14:28:49,303 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 14 treesize of output 16 [2022-11-23 14:28:49,498 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 23 treesize of output 23 [2022-11-23 14:28:49,510 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 14 treesize of output 16 [2022-11-23 14:28:50,462 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 15 treesize of output 7 [2022-11-23 14:28:50,474 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 24 treesize of output 12 [2022-11-23 14:28:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:50,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:28:50,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:28:50,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814115666] [2022-11-23 14:28:50,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814115666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:50,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:50,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 14:28:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198584393] [2022-11-23 14:28:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:50,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:28:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:28:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:28:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:28:50,901 INFO L87 Difference]: Start difference. First operand 400 states and 522 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:29:01,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:29:06,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:06,356 INFO L93 Difference]: Finished difference Result 486 states and 611 transitions. [2022-11-23 14:29:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 14:29:06,360 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-23 14:29:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:06,362 INFO L225 Difference]: With dead ends: 486 [2022-11-23 14:29:06,362 INFO L226 Difference]: Without dead ends: 486 [2022-11-23 14:29:06,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:29:06,363 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 525 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:06,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1262 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2039 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-23 14:29:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-23 14:29:06,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 420. [2022-11-23 14:29:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 324 states have (on average 1.5709876543209877) internal successors, (509), 384 states have internal predecessors, (509), 19 states have call successors, (19), 17 states have call predecessors, (19), 20 states have return successors, (27), 18 states have call predecessors, (27), 19 states have call successors, (27) [2022-11-23 14:29:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 555 transitions. [2022-11-23 14:29:06,387 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 555 transitions. Word has length 45 [2022-11-23 14:29:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:06,388 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 555 transitions. [2022-11-23 14:29:06,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:29:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 555 transitions. [2022-11-23 14:29:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:29:06,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:06,389 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] [2022-11-23 14:29:06,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:29:06,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:29:06,600 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:29:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 218805826, now seen corresponding path program 1 times [2022-11-23 14:29:06,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:29:06,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015132768] [2022-11-23 14:29:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:29:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:29:06,602 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:29:06,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-23 14:29:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:06,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-23 14:29:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:07,138 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:29:07,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-23 14:29:07,577 INFO L321 Elim1Store]: treesize reduction 44, result has 37.1 percent of original size [2022-11-23 14:29:07,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-23 14:29:07,975 INFO L321 Elim1Store]: treesize reduction 118, result has 27.6 percent of original size [2022-11-23 14:29:07,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 38 treesize of output 73 [2022-11-23 14:29:08,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:29:08,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 14:29:09,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:29:09,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:29:09,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:29:09,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:29:10,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 14:29:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:11,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:11,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:29:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015132768] [2022-11-23 14:29:11,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015132768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:11,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:11,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:29:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824245720] [2022-11-23 14:29:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:29:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:29:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:29:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=335, Unknown=1, NotChecked=0, Total=380 [2022-11-23 14:29:11,160 INFO L87 Difference]: Start difference. First operand 420 states and 555 transitions. Second operand has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:29:30,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:29:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:36,828 INFO L93 Difference]: Finished difference Result 649 states and 847 transitions. [2022-11-23 14:29:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 14:29:36,829 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-23 14:29:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:36,832 INFO L225 Difference]: With dead ends: 649 [2022-11-23 14:29:36,832 INFO L226 Difference]: Without dead ends: 649 [2022-11-23 14:29:36,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=312, Invalid=1246, Unknown=2, NotChecked=0, Total=1560 [2022-11-23 14:29:36,833 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1312 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 134 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:36,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1083 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1944 Invalid, 10 Unknown, 0 Unchecked, 11.2s Time] [2022-11-23 14:29:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-11-23 14:29:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 466. [2022-11-23 14:29:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 370 states have (on average 1.5594594594594595) internal successors, (577), 428 states have internal predecessors, (577), 21 states have call successors, (21), 17 states have call predecessors, (21), 20 states have return successors, (29), 20 states have call predecessors, (29), 21 states have call successors, (29) [2022-11-23 14:29:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 627 transitions. [2022-11-23 14:29:36,850 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 627 transitions. Word has length 45 [2022-11-23 14:29:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:36,850 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 627 transitions. [2022-11-23 14:29:36,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:29:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 627 transitions. [2022-11-23 14:29:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:29:36,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:36,851 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] [2022-11-23 14:29:36,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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)] Ended with exit code 0 [2022-11-23 14:29:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:29:37,066 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:29:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 218805827, now seen corresponding path program 1 times [2022-11-23 14:29:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:29:37,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252263005] [2022-11-23 14:29:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:37,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:29:37,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:29:37,068 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:29:37,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-23 14:29:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:37,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-23 14:29:37,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:37,618 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:29:37,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:37,856 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:37,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:37,899 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:29:37,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:37,994 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-23 14:29:37,994 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 15 treesize of output 11 [2022-11-23 14:29:38,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-23 14:29:38,298 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-23 14:29:38,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-23 14:29:38,338 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:38,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-23 14:29:38,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:29:38,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:29:39,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 14:29:39,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 14:29:39,324 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:39,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:39,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:29:39,382 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:39,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:39,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:29:39,597 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:39,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:39,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:29:39,656 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:39,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:39,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:29:39,921 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:39,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:39,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:29:39,973 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:29:39,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:29:39,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:29:40,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:29:40,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:29:40,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:29:40,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:29:40,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 14:29:40,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 14:29:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:29:41,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:29:41,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:29:41,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252263005] [2022-11-23 14:29:41,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252263005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:41,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:41,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-23 14:29:41,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429787488] [2022-11-23 14:29:41,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:41,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 14:29:41,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:29:41,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 14:29:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:29:41,016 INFO L87 Difference]: Start difference. First operand 466 states and 627 transitions. Second operand has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:29:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:58,441 INFO L93 Difference]: Finished difference Result 624 states and 810 transitions. [2022-11-23 14:29:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 14:29:58,442 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-23 14:29:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:58,445 INFO L225 Difference]: With dead ends: 624 [2022-11-23 14:29:58,445 INFO L226 Difference]: Without dead ends: 624 [2022-11-23 14:29:58,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:29:58,446 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 955 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:58,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1381 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-23 14:29:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-23 14:29:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 476. [2022-11-23 14:29:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 378 states have (on average 1.560846560846561) internal successors, (590), 437 states have internal predecessors, (590), 22 states have call successors, (22), 18 states have call predecessors, (22), 21 states have return successors, (30), 20 states have call predecessors, (30), 22 states have call successors, (30) [2022-11-23 14:29:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 642 transitions. [2022-11-23 14:29:58,462 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 642 transitions. Word has length 45 [2022-11-23 14:29:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:58,463 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 642 transitions. [2022-11-23 14:29:58,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:29:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 642 transitions. [2022-11-23 14:29:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 14:29:58,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:58,464 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] [2022-11-23 14:29:58,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-23 14:29:58,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:29:58,679 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:29:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash -84648785, now seen corresponding path program 1 times [2022-11-23 14:29:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:29:58,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646068751] [2022-11-23 14:29:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:58,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:29:58,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:29:58,681 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:29:58,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:29:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-23 14:29:58,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:59,238 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 14:29:59,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2022-11-23 14:29:59,848 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 11 treesize of output 7 [2022-11-23 14:29:59,950 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:30:00,353 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 19 treesize of output 18 [2022-11-23 14:30:00,397 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 11 treesize of output 7 [2022-11-23 14:30:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:00,614 INFO L321 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2022-11-23 14:30:00,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2022-11-23 14:30:00,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:30:00,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2022-11-23 14:30:01,543 INFO L321 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2022-11-23 14:30:01,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-23 14:30:02,072 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 14 treesize of output 16 [2022-11-23 14:30:02,113 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:30:02,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-23 14:30:02,331 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:30:02,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2022-11-23 14:30:02,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:30:03,388 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 15 treesize of output 7 [2022-11-23 14:30:04,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:30:04,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 28 [2022-11-23 14:30:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:04,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:30:04,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:30:04,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646068751] [2022-11-23 14:30:04,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646068751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:04,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:04,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-23 14:30:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662573806] [2022-11-23 14:30:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 14:30:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:30:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 14:30:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:30:04,434 INFO L87 Difference]: Start difference. First operand 476 states and 642 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:30:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:21,478 INFO L93 Difference]: Finished difference Result 535 states and 688 transitions. [2022-11-23 14:30:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 14:30:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-23 14:30:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:21,481 INFO L225 Difference]: With dead ends: 535 [2022-11-23 14:30:21,481 INFO L226 Difference]: Without dead ends: 535 [2022-11-23 14:30:21,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 14:30:21,483 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 451 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:21,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1998 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-11-23 14:30:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-23 14:30:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 479. [2022-11-23 14:30:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 381 states have (on average 1.5590551181102361) internal successors, (594), 439 states have internal predecessors, (594), 22 states have call successors, (22), 18 states have call predecessors, (22), 21 states have return successors, (30), 21 states have call predecessors, (30), 22 states have call successors, (30) [2022-11-23 14:30:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 646 transitions. [2022-11-23 14:30:21,496 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 646 transitions. Word has length 47 [2022-11-23 14:30:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:21,497 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 646 transitions. [2022-11-23 14:30:21,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:30:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 646 transitions. [2022-11-23 14:30:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 14:30:21,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:21,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:21,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:30:21,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:21,719 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:30:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -84648784, now seen corresponding path program 1 times [2022-11-23 14:30:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:30:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586623524] [2022-11-23 14:30:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:21,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:21,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:30:21,721 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:30:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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)] Waiting until timeout for monitored process [2022-11-23 14:30:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:22,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-23 14:30:22,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:30:22,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:30:22,298 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:30:22,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-23 14:30:22,788 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 11 treesize of output 7 [2022-11-23 14:30:22,834 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 11 treesize of output 7 [2022-11-23 14:30:22,973 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:30:22,986 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 21 treesize of output 20 [2022-11-23 14:30:23,424 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 19 treesize of output 18 [2022-11-23 14:30:23,450 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 23 treesize of output 22 [2022-11-23 14:30:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:23,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-23 14:30:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:23,688 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 14:30:23,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2022-11-23 14:30:23,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:30:23,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-23 14:30:24,671 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 14:30:24,672 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 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-23 14:30:24,727 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-23 14:30:24,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-23 14:30:25,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-23 14:30:25,352 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:30:25,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-23 14:30:25,659 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:30:25,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-23 14:30:25,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-23 14:30:27,538 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:30:27,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-23 14:30:27,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:30:27,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 26 [2022-11-23 14:30:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:30:27,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:30:27,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:30:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586623524] [2022-11-23 14:30:27,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586623524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:27,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:30:27,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-23 14:30:27,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048208318] [2022-11-23 14:30:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 14:30:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:30:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 14:30:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:30:27,951 INFO L87 Difference]: Start difference. First operand 479 states and 646 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:30:46,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:46,370 INFO L93 Difference]: Finished difference Result 521 states and 666 transitions. [2022-11-23 14:30:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 14:30:46,370 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-23 14:30:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:46,373 INFO L225 Difference]: With dead ends: 521 [2022-11-23 14:30:46,373 INFO L226 Difference]: Without dead ends: 521 [2022-11-23 14:30:46,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=277, Invalid=2273, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 14:30:46,375 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 476 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 64 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:46,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1427 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2854 Invalid, 6 Unknown, 0 Unchecked, 13.0s Time] [2022-11-23 14:30:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-23 14:30:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 457. [2022-11-23 14:30:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 363 states have (on average 1.5399449035812671) internal successors, (559), 419 states have internal predecessors, (559), 20 states have call successors, (20), 17 states have call predecessors, (20), 19 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27) [2022-11-23 14:30:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 606 transitions. [2022-11-23 14:30:46,387 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 606 transitions. Word has length 47 [2022-11-23 14:30:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 606 transitions. [2022-11-23 14:30:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:30:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 606 transitions. [2022-11-23 14:30:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 14:30:46,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:46,389 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] [2022-11-23 14:30:46,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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)] Ended with exit code 0 [2022-11-23 14:30:46,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:46,602 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:30:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -180994493, now seen corresponding path program 1 times [2022-11-23 14:30:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:30:46,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374146294] [2022-11-23 14:30:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:46,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:46,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:30:46,604 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:30:46,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-23 14:30:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:47,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-23 14:30:47,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:30:47,449 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-23 14:30:47,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 34 [2022-11-23 14:30:47,685 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 11 treesize of output 7 [2022-11-23 14:30:47,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:47,853 INFO L321 Elim1Store]: treesize reduction 84, result has 27.0 percent of original size [2022-11-23 14:30:47,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 69 [2022-11-23 14:30:47,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:48,013 INFO L321 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2022-11-23 14:30:48,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2022-11-23 14:30:48,585 INFO L321 Elim1Store]: treesize reduction 116, result has 26.6 percent of original size [2022-11-23 14:30:48,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 85 [2022-11-23 14:30:49,384 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 11 treesize of output 7 [2022-11-23 14:30:49,443 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:30:49,443 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 1 case distinctions, treesize of input 60 treesize of output 47 [2022-11-23 14:30:50,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:50,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:50,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:50,954 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:30:50,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 125 [2022-11-23 14:30:51,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:51,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:51,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:51,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:51,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 14:30:52,371 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:30:52,372 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:30:52,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:30:52,495 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-23 14:30:52,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 102 [2022-11-23 14:30:53,224 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:30:53,224 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:30:53,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:30:53,353 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-23 14:30:53,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 102 [2022-11-23 14:30:54,111 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-23 14:30:54,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 102 [2022-11-23 14:30:54,262 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:30:54,263 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:30:54,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-11-23 14:30:54,936 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:30:54,937 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:30:55,044 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-23 14:30:55,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 102 [2022-11-23 14:30:55,278 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 14:30:58,873 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 15 treesize of output 7 [2022-11-23 14:31:00,181 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-23 14:31:00,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 127 [2022-11-23 14:31:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:31:01,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:31:01,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:31:01,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374146294] [2022-11-23 14:31:01,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374146294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:01,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:01,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-23 14:31:01,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989399349] [2022-11-23 14:31:01,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 14:31:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:31:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 14:31:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=488, Unknown=1, NotChecked=0, Total=552 [2022-11-23 14:31:01,787 INFO L87 Difference]: Start difference. First operand 457 states and 606 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:31:09,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:31:42,413 WARN L233 SmtUtils]: Spent 23.87s on a formula simplification. DAG size of input: 180 DAG size of output: 133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:32:23,648 WARN L233 SmtUtils]: Spent 36.19s on a formula simplification. DAG size of input: 190 DAG size of output: 161 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:33:37,367 WARN L233 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 218 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:34:59,245 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 218 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:36:13,184 WARN L233 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 208 DAG size of output: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:36:16,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:36:18,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:36:21,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:36:23,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:37:09,450 WARN L233 SmtUtils]: Spent 36.26s on a formula simplification. DAG size of input: 193 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:37:11,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:37:15,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:37:30,637 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 174 DAG size of output: 125 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:37:36,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:38:12,496 WARN L233 SmtUtils]: Spent 27.77s on a formula simplification. DAG size of input: 195 DAG size of output: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:39,063 WARN L233 SmtUtils]: Spent 1.23m on a formula simplification. DAG size of input: 208 DAG size of output: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:46,207 INFO L93 Difference]: Finished difference Result 728 states and 932 transitions. [2022-11-23 14:39:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 14:39:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-23 14:39:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:46,211 INFO L225 Difference]: With dead ends: 728 [2022-11-23 14:39:46,211 INFO L226 Difference]: Without dead ends: 728 [2022-11-23 14:39:46,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 487.4s TimeCoverageRelationStatistics Valid=386, Invalid=1848, Unknown=22, NotChecked=0, Total=2256 [2022-11-23 14:39:46,212 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1001 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 104 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:46,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1770 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 3154 Invalid, 9 Unknown, 0 Unchecked, 44.7s Time] [2022-11-23 14:39:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-23 14:39:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 475. [2022-11-23 14:39:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 377 states have (on average 1.5198938992042441) internal successors, (573), 434 states have internal predecessors, (573), 21 states have call successors, (21), 20 states have call predecessors, (21), 22 states have return successors, (29), 20 states have call predecessors, (29), 21 states have call successors, (29) [2022-11-23 14:39:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 623 transitions. [2022-11-23 14:39:46,227 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 623 transitions. Word has length 47 [2022-11-23 14:39:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 623 transitions. [2022-11-23 14:39:46,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:39:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 623 transitions. [2022-11-23 14:39:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 14:39:46,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:46,229 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] [2022-11-23 14:39:46,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-23 14:39:46,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:39:46,444 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:39:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -180994492, now seen corresponding path program 1 times [2022-11-23 14:39:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:39:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318557886] [2022-11-23 14:39:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:46,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:39:46,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:39:46,446 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:39:46,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:39:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-23 14:39:47,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:47,305 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 [2022-11-23 14:39:47,493 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-23 14:39:47,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-23 14:39:48,258 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 11 treesize of output 7 [2022-11-23 14:39:48,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:39:48,500 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 14:39:48,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-23 14:39:48,631 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-23 14:39:48,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-23 14:39:48,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:48,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-23 14:39:48,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-23 14:39:49,525 INFO L321 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-23 14:39:49,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2022-11-23 14:39:49,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-23 14:39:50,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-23 14:39:50,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 39 [2022-11-23 14:39:51,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,490 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:39:51,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-23 14:39:51,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-23 14:39:51,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:51,557 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:39:51,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2022-11-23 14:39:52,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-23 14:39:52,588 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 14:39:52,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-23 14:39:52,653 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:39:52,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-23 14:39:52,963 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:39:52,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-23 14:39:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:53,046 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:39:53,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-23 14:39:53,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-23 14:39:53,536 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 14:39:53,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-23 14:39:53,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-23 14:39:53,634 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:39:53,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-23 14:39:54,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-23 14:39:54,086 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 14:39:54,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 57 [2022-11-23 14:39:54,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:39:54,134 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:39:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 14:39:56,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-23 14:39:57,475 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-23 14:39:57,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 52 [2022-11-23 14:39:57,522 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:39:57,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-23 14:39:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:58,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:39:58,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:39:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318557886] [2022-11-23 14:39:58,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318557886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:58,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:58,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-23 14:39:58,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421573633] [2022-11-23 14:39:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:58,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 14:39:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:39:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 14:39:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-23 14:39:58,021 INFO L87 Difference]: Start difference. First operand 475 states and 623 transitions. Second operand has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:40:46,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:41:00,612 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 173 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:12,212 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 185 DAG size of output: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:16,727 INFO L93 Difference]: Finished difference Result 766 states and 949 transitions. [2022-11-23 14:41:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 14:41:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-23 14:41:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:16,732 INFO L225 Difference]: With dead ends: 766 [2022-11-23 14:41:16,732 INFO L226 Difference]: Without dead ends: 766 [2022-11-23 14:41:16,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=641, Invalid=3915, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 14:41:16,734 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 953 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 3828 mSolverCounterSat, 122 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 3952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3828 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:16,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1759 Invalid, 3952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3828 Invalid, 2 Unknown, 0 Unchecked, 25.0s Time] [2022-11-23 14:41:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-23 14:41:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 529. [2022-11-23 14:41:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 429 states have (on average 1.4848484848484849) internal successors, (637), 487 states have internal predecessors, (637), 22 states have call successors, (22), 21 states have call predecessors, (22), 23 states have return successors, (31), 20 states have call predecessors, (31), 22 states have call successors, (31) [2022-11-23 14:41:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 690 transitions. [2022-11-23 14:41:16,749 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 690 transitions. Word has length 47 [2022-11-23 14:41:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:16,749 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 690 transitions. [2022-11-23 14:41:16,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 690 transitions. [2022-11-23 14:41:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 14:41:16,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:16,751 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] [2022-11-23 14:41:16,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:16,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:16,967 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-23 14:41:16,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:16,967 INFO L85 PathProgramCache]: Analyzing trace with hash -603696318, now seen corresponding path program 1 times [2022-11-23 14:41:16,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:16,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552936090] [2022-11-23 14:41:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:16,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:16,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:16,969 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:41:16,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-23 14:41:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:41:17,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:41:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:41:17,881 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:41:17,882 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:41:17,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 76 remaining) [2022-11-23 14:41:17,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 76 remaining) [2022-11-23 14:41:17,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 76 remaining) [2022-11-23 14:41:17,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 76 remaining) [2022-11-23 14:41:17,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 76 remaining) [2022-11-23 14:41:17,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (70 of 76 remaining) [2022-11-23 14:41:17,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (69 of 76 remaining) [2022-11-23 14:41:17,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (68 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 76 remaining) [2022-11-23 14:41:17,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 76 remaining) [2022-11-23 14:41:17,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 76 remaining) [2022-11-23 14:41:17,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 76 remaining) [2022-11-23 14:41:17,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 76 remaining) [2022-11-23 14:41:17,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 76 remaining) [2022-11-23 14:41:17,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 76 remaining) [2022-11-23 14:41:17,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 76 remaining) [2022-11-23 14:41:17,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 76 remaining) [2022-11-23 14:41:17,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 76 remaining) [2022-11-23 14:41:17,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 76 remaining) [2022-11-23 14:41:17,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 76 remaining) [2022-11-23 14:41:17,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 76 remaining) [2022-11-23 14:41:17,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 76 remaining) [2022-11-23 14:41:17,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 76 remaining) [2022-11-23 14:41:17,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 76 remaining) [2022-11-23 14:41:17,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 76 remaining) [2022-11-23 14:41:17,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 76 remaining) [2022-11-23 14:41:17,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 76 remaining) [2022-11-23 14:41:17,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 76 remaining) [2022-11-23 14:41:17,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 76 remaining) [2022-11-23 14:41:17,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 76 remaining) [2022-11-23 14:41:17,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (18 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (17 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (16 of 76 remaining) [2022-11-23 14:41:17,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 76 remaining) [2022-11-23 14:41:17,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 76 remaining) [2022-11-23 14:41:17,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (13 of 76 remaining) [2022-11-23 14:41:17,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (12 of 76 remaining) [2022-11-23 14:41:17,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (11 of 76 remaining) [2022-11-23 14:41:17,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (10 of 76 remaining) [2022-11-23 14:41:17,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (9 of 76 remaining) [2022-11-23 14:41:17,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (8 of 76 remaining) [2022-11-23 14:41:17,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 76 remaining) [2022-11-23 14:41:17,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 76 remaining) [2022-11-23 14:41:17,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 76 remaining) [2022-11-23 14:41:17,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 76 remaining) [2022-11-23 14:41:17,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (3 of 76 remaining) [2022-11-23 14:41:17,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (2 of 76 remaining) [2022-11-23 14:41:17,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (1 of 76 remaining) [2022-11-23 14:41:17,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK (0 of 76 remaining) [2022-11-23 14:41:17,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:18,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:18,124 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-23 14:41:18,127 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:41:18,137 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,138 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,138 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,138 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,139 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,139 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:41:18 BoogieIcfgContainer [2022-11-23 14:41:18,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:41:18,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:41:18,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:41:18,181 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:41:18,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:27:24" (3/4) ... [2022-11-23 14:41:18,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 14:41:18,188 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,188 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,188 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,189 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,189 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,189 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:41:18,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:41:18,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:41:18,243 INFO L158 Benchmark]: Toolchain (without parser) took 835941.61ms. Allocated memory was 60.8MB in the beginning and 142.6MB in the end (delta: 81.8MB). Free memory was 28.0MB in the beginning and 40.3MB in the end (delta: -12.3MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,243 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:41:18,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 919.00ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 27.8MB in the beginning and 51.0MB in the end (delta: -23.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.15ms. Allocated memory is still 79.7MB. Free memory was 51.0MB in the beginning and 48.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,244 INFO L158 Benchmark]: Boogie Preprocessor took 53.80ms. Allocated memory is still 79.7MB. Free memory was 48.0MB in the beginning and 45.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,244 INFO L158 Benchmark]: RCFGBuilder took 1268.18ms. Allocated memory is still 79.7MB. Free memory was 44.9MB in the beginning and 48.4MB in the end (delta: -3.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,244 INFO L158 Benchmark]: TraceAbstraction took 833522.87ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 47.6MB in the beginning and 45.5MB in the end (delta: 2.1MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,245 INFO L158 Benchmark]: Witness Printer took 61.99ms. Allocated memory is still 142.6MB. Free memory was 45.5MB in the beginning and 40.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:41:18,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 919.00ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 27.8MB in the beginning and 51.0MB in the end (delta: -23.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.15ms. Allocated memory is still 79.7MB. Free memory was 51.0MB in the beginning and 48.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.80ms. Allocated memory is still 79.7MB. Free memory was 48.0MB in the beginning and 45.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1268.18ms. Allocated memory is still 79.7MB. Free memory was 44.9MB in the beginning and 48.4MB in the end (delta: -3.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 833522.87ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 47.6MB in the beginning and 45.5MB in the end (delta: 2.1MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Witness Printer took 61.99ms. Allocated memory is still 142.6MB. Free memory was 45.5MB in the beginning and 40.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L855] struct hid_device dev; VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L863] CALL entry_point() [L857] CALL probe_23(&dev) [L838] int ret = - -3; VAL [#in~dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L839] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={2:0}, ldv_global_msg_list={1:0}, unknown-#in~size-unknown=1036] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L839] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [#in~dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct hid_report_enum))={18:0}, ret=3] [L839] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L840] COND FALSE !(p==0) VAL [#in~dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L842] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [#in~list={18:4}, dev={2:0}, ldv_global_msg_list={1:0}] [L540] list->next = list VAL [#in~list={18:4}, dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}] [L541] list->prev = list VAL [#in~list={18:4}, dev={2:0}, ldv_global_msg_list={1:0}, list={18:4}] [L842] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [#in~dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L843] dev->report_enum = p VAL [#in~dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={18:0}, ret=3] [L844] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [#in~device={2:0}, dev={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); VAL [\result={3:0}, calloc(size, 1)={3:0}, dev={2:0}, ldv_global_msg_list={1:0}, size=8, unknown-#in~size-unknown=8] [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [#in~device={2:0}, dev={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_zalloc(sizeof(struct hid_parser))={3:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [#in~device={2:0}, dev={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L818] parser->device = device VAL [#in~device={2:0}, dev={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612738, dev={2:0}, ldv_global_msg_list={1:0}, r=1610612738] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [#in~device={2:0}, dev={2:0}, device={2:0}, item={23:0}, ldv_global_msg_list={1:0}, ldv_positive()=1610612738, parser={3:0}] [L820] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [#in~item={23:0}, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [#in~item={23:0}, __VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [#in~item={23:0}, __VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [#in~item={23:0}, __VERIFIER_nondet_int()=0, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [#in~item={23:0}, \result=0, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}] [L820] RET, EXPR fetch_item(&item) [L820] COND TRUE fetch_item(&item)!=-1 [L821] CALL hid_parser_main(parser, &item) [L800] EXPR parser->device VAL [#in~item={23:0}, #in~parser={3:0}, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser->device={2:0}] [L800] EXPR parser->report_id VAL [#in~item={23:0}, #in~parser={3:0}, dev={2:0}, item={23:0}, ldv_global_msg_list={1:0}, parser={3:0}, parser->device={2:0}, parser->report_id=1610612738] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [#in~device={2:0}, dev={2:0}, device={2:0}, device->report_enum={18:0}, id=1610612738, ldv_global_msg_list={1:0}, unknown-#in~id-unknown=1610612738] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [#in~device={2:0}, dev={2:0}, device={2:0}, id=1610612738, ldv_global_msg_list={1:0}, report_enum={18:0}, unknown-#in~id-unknown=1610612738] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 198 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 833.4s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 762.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 mSolverCounterUnknown, 9306 SdHoareTripleChecker+Valid, 184.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9257 mSDsluCounter, 25217 SdHoareTripleChecker+Invalid, 175.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 453 IncrementalHoareTripleChecker+Unchecked, 21083 mSDsCounter, 952 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26947 IncrementalHoareTripleChecker+Invalid, 28456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 952 mSolverCounterUnsat, 4134 mSDtfsCounter, 26947 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1124 GetRequests, 607 SyntacticMatches, 17 SemanticMatches, 500 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3583 ImplicationChecksByTransitivity, 604.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=529occurred in iteration=28, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 1705 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 57.1s InterpolantComputationTime, 969 NumberOfCodeBlocks, 969 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 894 ConstructedInterpolants, 329 QuantifiedInterpolants, 23209 SizeOfPredicates, 302 NumberOfNonLiveVariables, 5260 ConjunctsInSsa, 765 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 14:41:18,491 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 14:41:18,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6fa86c-85dc-4a39-bac9-d2d0d62e5800/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)