./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:07:14,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:07:14,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:07:14,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:07:14,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:07:14,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:07:14,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:07:14,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:07:14,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:07:14,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:07:14,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:07:14,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:07:14,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:07:14,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:07:14,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:07:14,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:07:14,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:07:14,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:07:14,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:07:14,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:07:14,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:07:14,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:07:14,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:07:14,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:07:15,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:07:15,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:07:15,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:07:15,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:07:15,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:07:15,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:07:15,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:07:15,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:07:15,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:07:15,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:07:15,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:07:15,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:07:15,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:07:15,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:07:15,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:07:15,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:07:15,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:07:15,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:07:15,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:07:15,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:07:15,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:07:15,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:07:15,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:07:15,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:07:15,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:07:15,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:07:15,065 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:07:15,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:07:15,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:07:15,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:07:15,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:07:15,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:07:15,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:07:15,068 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:07:15,068 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:07:15,069 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:07:15,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:07:15,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:07:15,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:07:15,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:07:15,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:07:15,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:07:15,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:07:15,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:15,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:07:15,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:07:15,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:07:15,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:07:15,072 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_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-11-18 20:07:15,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:07:15,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:07:15,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:07:15,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:07:15,473 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:07:15,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-18 20:07:15,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/be1caf3ac/50e4e79375914d5793e1befdcc1448d8/FLAGa9135ef2c [2022-11-18 20:07:16,163 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:07:16,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-18 20:07:16,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/be1caf3ac/50e4e79375914d5793e1befdcc1448d8/FLAGa9135ef2c [2022-11-18 20:07:16,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/be1caf3ac/50e4e79375914d5793e1befdcc1448d8 [2022-11-18 20:07:16,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:07:16,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:07:16,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:16,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:07:16,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:07:16,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:16" (1/1) ... [2022-11-18 20:07:16,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3091455c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:16, skipping insertion in model container [2022-11-18 20:07:16,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:16" (1/1) ... [2022-11-18 20:07:16,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:07:16,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:17,169 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-18 20:07:17,184 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-18 20:07:17,277 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-18 20:07:17,278 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-18 20:07:17,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:17,305 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) [2022-11-18 20:07:17,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44c1bfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:17, skipping insertion in model container [2022-11-18 20:07:17,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:17,306 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:07:17,308 INFO L158 Benchmark]: Toolchain (without parser) took 887.22ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 65.4MB in the end (delta: 3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:07:17,308 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:07:17,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 883.63ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 65.4MB in the end (delta: 3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:07:17,310 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 102.8MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 883.63ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 65.4MB in the end (delta: 3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:07:19,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:07:19,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:07:19,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:07:19,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:07:19,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:07:19,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:07:19,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:07:19,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:07:19,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:07:19,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:07:19,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:07:19,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:07:19,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:07:19,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:07:19,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:07:19,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:07:19,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:07:19,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:07:19,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:07:19,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:07:19,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:07:19,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:07:19,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:07:19,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:07:19,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:07:19,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:07:19,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:07:19,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:07:19,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:07:19,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:07:19,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:07:19,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:07:19,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:07:19,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:07:19,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:07:19,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:07:19,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:07:19,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:07:19,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:07:19,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:07:19,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:07:19,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:07:19,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:07:19,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:07:19,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:07:19,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:07:19,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:07:19,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:07:19,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:07:19,602 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:07:19,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:07:19,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:07:19,603 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:07:19,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:07:19,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:07:19,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:07:19,604 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:07:19,604 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:07:19,605 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:07:19,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:07:19,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:07:19,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:07:19,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:07:19,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:07:19,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:07:19,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:07:19,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:07:19,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:07:19,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:19,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:07:19,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:07:19,608 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:07:19,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:07:19,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:07:19,609 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_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-11-18 20:07:20,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:07:20,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:07:20,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:07:20,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:07:20,030 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:07:20,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-18 20:07:20,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/52046bcc9/f3684066f9704c97aacc7b0f9a585ad9/FLAG356222b13 [2022-11-18 20:07:20,820 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:07:20,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-18 20:07:20,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/52046bcc9/f3684066f9704c97aacc7b0f9a585ad9/FLAG356222b13 [2022-11-18 20:07:21,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/data/52046bcc9/f3684066f9704c97aacc7b0f9a585ad9 [2022-11-18 20:07:21,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:07:21,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:07:21,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:21,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:07:21,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:07:21,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:21" (1/1) ... [2022-11-18 20:07:21,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9f558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:21, skipping insertion in model container [2022-11-18 20:07:21,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:21" (1/1) ... [2022-11-18 20:07:21,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:07:21,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:21,783 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-18 20:07:21,814 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-18 20:07:21,947 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-18 20:07:21,948 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-18 20:07:21,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:21,982 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:07:22,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:22,040 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-18 20:07:22,043 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-18 20:07:22,115 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-18 20:07:22,116 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-18 20:07:22,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:22,132 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:07:22,160 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-18 20:07:22,162 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-18 20:07:22,207 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-18 20:07:22,208 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-18 20:07:22,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:22,294 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:07:22,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22 WrapperNode [2022-11-18 20:07:22,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:22,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:22,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:07:22,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:07:22,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,411 INFO L138 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1200 [2022-11-18 20:07:22,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:22,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:07:22,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:07:22,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:07:22,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,543 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:07:22,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:07:22,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:07:22,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:07:22,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (1/1) ... [2022-11-18 20:07:22,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:22,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:07:22,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:07:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-18 20:07:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:07:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:07:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-18 20:07:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:07:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:07:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:07:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:07:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-18 20:07:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-18 20:07:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:07:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:07:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:07:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:07:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-18 20:07:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-18 20:07:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:07:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-18 20:07:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-18 20:07:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:07:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:07:23,012 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:07:23,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:07:28,724 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:07:28,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:07:28,763 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-18 20:07:28,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:28 BoogieIcfgContainer [2022-11-18 20:07:28,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:07:28,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:07:28,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:07:28,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:07:28,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:07:21" (1/3) ... [2022-11-18 20:07:28,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddc4f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:28, skipping insertion in model container [2022-11-18 20:07:28,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:22" (2/3) ... [2022-11-18 20:07:28,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddc4f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:28, skipping insertion in model container [2022-11-18 20:07:28,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:28" (3/3) ... [2022-11-18 20:07:28,780 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2022-11-18 20:07:28,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:07:28,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2022-11-18 20:07:28,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:07:28,871 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;@31f635ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:07:28,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2022-11-18 20:07:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 1279 states, 625 states have (on average 2.2448) internal successors, (1403), 1259 states have internal predecessors, (1403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:07:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:07:28,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:28,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:07:28,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-11-18 20:07:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:28,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502906398] [2022-11-18 20:07:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:28,907 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 [2022-11-18 20:07:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:28,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:29,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:07:29,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:29,258 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 [2022-11-18 20:07:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:29,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:29,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:29,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502906398] [2022-11-18 20:07:29,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502906398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:29,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:29,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:07:29,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779913639] [2022-11-18 20:07:29,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:29,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:07:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:07:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:07:29,364 INFO L87 Difference]: Start difference. First operand has 1279 states, 625 states have (on average 2.2448) internal successors, (1403), 1259 states have internal predecessors, (1403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:32,345 INFO L93 Difference]: Finished difference Result 1536 states and 1625 transitions. [2022-11-18 20:07:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:07:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:07:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:32,369 INFO L225 Difference]: With dead ends: 1536 [2022-11-18 20:07:32,369 INFO L226 Difference]: Without dead ends: 1534 [2022-11-18 20:07:32,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:07:32,375 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 906 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:32,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1254 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:07:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-11-18 20:07:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1299. [2022-11-18 20:07:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 659 states have (on average 2.1062215477996964) internal successors, (1388), 1280 states have internal predecessors, (1388), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 20:07:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1418 transitions. [2022-11-18 20:07:32,487 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1418 transitions. Word has length 3 [2022-11-18 20:07:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:32,488 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1418 transitions. [2022-11-18 20:07:32,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1418 transitions. [2022-11-18 20:07:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:07:32,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:32,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:07:32,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:32,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:32,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-11-18 20:07:32,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:32,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870815153] [2022-11-18 20:07:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:32,701 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 [2022-11-18 20:07:32,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:32,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:32,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:32,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:07:32,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:32,912 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 [2022-11-18 20:07:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:32,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:32,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870815153] [2022-11-18 20:07:32,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870815153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:32,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:32,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:07:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045868708] [2022-11-18 20:07:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:32,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:07:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:07:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:07:32,940 INFO L87 Difference]: Start difference. First operand 1299 states and 1418 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:37,579 INFO L93 Difference]: Finished difference Result 1890 states and 2056 transitions. [2022-11-18 20:07:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:07:37,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:07:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:37,587 INFO L225 Difference]: With dead ends: 1890 [2022-11-18 20:07:37,587 INFO L226 Difference]: Without dead ends: 1890 [2022-11-18 20:07:37,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:07:37,589 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 624 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:37,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1754 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:07:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-11-18 20:07:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1503. [2022-11-18 20:07:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 862 states have (on average 2.0881670533642693) internal successors, (1800), 1482 states have internal predecessors, (1800), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-18 20:07:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1834 transitions. [2022-11-18 20:07:37,630 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1834 transitions. Word has length 3 [2022-11-18 20:07:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:37,631 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 1834 transitions. [2022-11-18 20:07:37,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1834 transitions. [2022-11-18 20:07:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:07:37,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:37,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:37,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-18 20:07:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:37,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-11-18 20:07:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:37,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737299905] [2022-11-18 20:07:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:37,846 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 [2022-11-18 20:07:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:37,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:37,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:38,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:07:38,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:38,057 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 [2022-11-18 20:07:38,064 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 [2022-11-18 20:07:38,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:38,168 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 [2022-11-18 20:07:38,191 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:07:38,191 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 [2022-11-18 20:07:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:38,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:38,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:38,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737299905] [2022-11-18 20:07:38,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737299905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:38,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:38,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067160852] [2022-11-18 20:07:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:38,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:38,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:38,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:38,235 INFO L87 Difference]: Start difference. First operand 1503 states and 1834 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:45,789 INFO L93 Difference]: Finished difference Result 2568 states and 2977 transitions. [2022-11-18 20:07:45,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:07:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:07:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:45,808 INFO L225 Difference]: With dead ends: 2568 [2022-11-18 20:07:45,808 INFO L226 Difference]: Without dead ends: 2568 [2022-11-18 20:07:45,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:45,819 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1111 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:45,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1808 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-18 20:07:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-18 20:07:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1648. [2022-11-18 20:07:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1007 states have (on average 2.0685203574975173) internal successors, (2083), 1627 states have internal predecessors, (2083), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-18 20:07:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2117 transitions. [2022-11-18 20:07:45,862 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2117 transitions. Word has length 8 [2022-11-18 20:07:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:45,863 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2117 transitions. [2022-11-18 20:07:45,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2117 transitions. [2022-11-18 20:07:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:07:45,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:45,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:45,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:46,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:46,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-11-18 20:07:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:46,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780768651] [2022-11-18 20:07:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:46,077 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 [2022-11-18 20:07:46,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:46,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:46,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:46,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:07:46,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:46,268 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 [2022-11-18 20:07:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:46,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:46,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:46,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780768651] [2022-11-18 20:07:46,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780768651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:46,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:46,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838791879] [2022-11-18 20:07:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:46,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:46,299 INFO L87 Difference]: Start difference. First operand 1648 states and 2117 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:51,053 INFO L93 Difference]: Finished difference Result 2810 states and 3510 transitions. [2022-11-18 20:07:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:07:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:07:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:51,066 INFO L225 Difference]: With dead ends: 2810 [2022-11-18 20:07:51,066 INFO L226 Difference]: Without dead ends: 2810 [2022-11-18 20:07:51,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:07:51,067 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 2331 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:51,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 2575 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 20:07:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-11-18 20:07:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1603. [2022-11-18 20:07:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1007 states have (on average 2.009930486593843) internal successors, (2024), 1582 states have internal predecessors, (2024), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-18 20:07:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2058 transitions. [2022-11-18 20:07:51,110 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2058 transitions. Word has length 9 [2022-11-18 20:07:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:51,110 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 2058 transitions. [2022-11-18 20:07:51,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2058 transitions. [2022-11-18 20:07:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:07:51,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:51,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:51,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:51,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-11-18 20:07:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:51,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293589184] [2022-11-18 20:07:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:51,324 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 [2022-11-18 20:07:51,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:51,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:51,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:51,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:07:51,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:51,501 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 [2022-11-18 20:07:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:51,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:51,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:51,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293589184] [2022-11-18 20:07:51,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293589184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:51,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:51,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87736718] [2022-11-18 20:07:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:51,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:51,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:51,552 INFO L87 Difference]: Start difference. First operand 1603 states and 2058 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:57,064 INFO L93 Difference]: Finished difference Result 2439 states and 3103 transitions. [2022-11-18 20:07:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:07:57,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:07:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:57,071 INFO L225 Difference]: With dead ends: 2439 [2022-11-18 20:07:57,071 INFO L226 Difference]: Without dead ends: 2439 [2022-11-18 20:07:57,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:07:57,072 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 1581 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:57,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2714 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-18 20:07:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2022-11-18 20:07:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1593. [2022-11-18 20:07:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1007 states have (on average 1.9860973187686197) internal successors, (2000), 1572 states have internal predecessors, (2000), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-18 20:07:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2034 transitions. [2022-11-18 20:07:57,115 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2034 transitions. Word has length 9 [2022-11-18 20:07:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:57,116 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2034 transitions. [2022-11-18 20:07:57,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2034 transitions. [2022-11-18 20:07:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:07:57,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:57,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:57,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:57,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:57,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1033799265, now seen corresponding path program 1 times [2022-11-18 20:07:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:57,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557232418] [2022-11-18 20:07:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:57,330 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 [2022-11-18 20:07:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:57,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:57,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:57,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:57,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:57,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:57,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557232418] [2022-11-18 20:07:57,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557232418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:57,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:57,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:07:57,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170572034] [2022-11-18 20:07:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:57,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:57,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:57,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:57,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:57,587 INFO L87 Difference]: Start difference. First operand 1593 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:58,586 INFO L93 Difference]: Finished difference Result 2263 states and 2807 transitions. [2022-11-18 20:07:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:07:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 20:07:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:58,606 INFO L225 Difference]: With dead ends: 2263 [2022-11-18 20:07:58,606 INFO L226 Difference]: Without dead ends: 2263 [2022-11-18 20:07:58,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:07:58,607 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 749 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:58,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 3867 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:07:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2022-11-18 20:07:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1851. [2022-11-18 20:07:58,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1262 states have (on average 1.9904912836767037) internal successors, (2512), 1827 states have internal predecessors, (2512), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:07:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2552 transitions. [2022-11-18 20:07:58,655 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2552 transitions. Word has length 11 [2022-11-18 20:07:58,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:58,655 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 2552 transitions. [2022-11-18 20:07:58,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2552 transitions. [2022-11-18 20:07:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:07:58,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:58,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:58,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:58,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:07:58,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1306900600, now seen corresponding path program 1 times [2022-11-18 20:07:58,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:58,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500160567] [2022-11-18 20:07:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:07:58,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:58,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:58,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:07:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:07:59,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:59,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:59,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:59,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:59,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-18 20:07:59,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:07:59,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-18 20:07:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:59,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:07:59,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:59,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500160567] [2022-11-18 20:07:59,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500160567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:59,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:59,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:07:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826252012] [2022-11-18 20:07:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:07:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:59,190 INFO L87 Difference]: Start difference. First operand 1851 states and 2552 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:01,207 INFO L93 Difference]: Finished difference Result 1999 states and 2407 transitions. [2022-11-18 20:08:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:08:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:01,212 INFO L225 Difference]: With dead ends: 1999 [2022-11-18 20:08:01,212 INFO L226 Difference]: Without dead ends: 1999 [2022-11-18 20:08:01,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:01,214 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 502 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:01,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 3856 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:08:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-11-18 20:08:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1493. [2022-11-18 20:08:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 906 states have (on average 1.9757174392935983) internal successors, (1790), 1471 states have internal predecessors, (1790), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 20:08:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1826 transitions. [2022-11-18 20:08:01,242 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1826 transitions. Word has length 14 [2022-11-18 20:08:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:01,243 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 1826 transitions. [2022-11-18 20:08:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1826 transitions. [2022-11-18 20:08:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:08:01,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:01,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:01,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:01,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:01,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:01,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-11-18 20:08:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:01,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245239655] [2022-11-18 20:08:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:01,458 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 [2022-11-18 20:08:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:01,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:01,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:01,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:08:01,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:01,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:01,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245239655] [2022-11-18 20:08:01,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245239655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:01,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:01,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878640006] [2022-11-18 20:08:01,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:01,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:08:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:08:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:08:01,707 INFO L87 Difference]: Start difference. First operand 1493 states and 1826 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:01,748 INFO L93 Difference]: Finished difference Result 1433 states and 1740 transitions. [2022-11-18 20:08:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:08:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:08:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:01,755 INFO L225 Difference]: With dead ends: 1433 [2022-11-18 20:08:01,755 INFO L226 Difference]: Without dead ends: 1433 [2022-11-18 20:08:01,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:08:01,756 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 1163 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:01,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1306 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:08:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-11-18 20:08:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1433. [2022-11-18 20:08:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 870 states have (on average 1.9586206896551723) internal successors, (1704), 1411 states have internal predecessors, (1704), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 20:08:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1740 transitions. [2022-11-18 20:08:01,792 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1740 transitions. Word has length 19 [2022-11-18 20:08:01,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:01,793 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1740 transitions. [2022-11-18 20:08:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1740 transitions. [2022-11-18 20:08:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:08:01,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:01,794 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] [2022-11-18 20:08:01,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:02,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-11-18 20:08:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:02,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772006394] [2022-11-18 20:08:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:02,009 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 [2022-11-18 20:08:02,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:02,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:02,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:02,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:02,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:02,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:02,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772006394] [2022-11-18 20:08:02,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772006394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:02,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:02,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94186863] [2022-11-18 20:08:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:02,244 INFO L87 Difference]: Start difference. First operand 1433 states and 1740 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:02,329 INFO L93 Difference]: Finished difference Result 1405 states and 1684 transitions. [2022-11-18 20:08:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:08:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:02,333 INFO L225 Difference]: With dead ends: 1405 [2022-11-18 20:08:02,334 INFO L226 Difference]: Without dead ends: 1405 [2022-11-18 20:08:02,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:02,335 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 1144 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:02,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2446 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:08:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-18 20:08:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1403. [2022-11-18 20:08:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 854 states have (on average 1.9274004683840749) internal successors, (1646), 1381 states have internal predecessors, (1646), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 20:08:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1682 transitions. [2022-11-18 20:08:02,378 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1682 transitions. Word has length 21 [2022-11-18 20:08:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:02,379 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1682 transitions. [2022-11-18 20:08:02,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1682 transitions. [2022-11-18 20:08:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:08:02,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:02,380 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] [2022-11-18 20:08:02,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:02,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:02,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-11-18 20:08:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:02,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250080514] [2022-11-18 20:08:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:02,601 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 [2022-11-18 20:08:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:02,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:02,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:02,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:08:02,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:02,852 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 [2022-11-18 20:08:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:02,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:02,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:02,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250080514] [2022-11-18 20:08:02,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250080514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:02,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:02,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:02,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410083534] [2022-11-18 20:08:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:02,974 INFO L87 Difference]: Start difference. First operand 1403 states and 1682 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:08,571 INFO L93 Difference]: Finished difference Result 2571 states and 3078 transitions. [2022-11-18 20:08:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:08:08,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-18 20:08:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:08,578 INFO L225 Difference]: With dead ends: 2571 [2022-11-18 20:08:08,579 INFO L226 Difference]: Without dead ends: 2571 [2022-11-18 20:08:08,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:08,580 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 2420 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:08,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 2731 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-18 20:08:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2022-11-18 20:08:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1399. [2022-11-18 20:08:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 854 states have (on average 1.9180327868852458) internal successors, (1638), 1377 states have internal predecessors, (1638), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 20:08:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1674 transitions. [2022-11-18 20:08:08,606 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1674 transitions. Word has length 35 [2022-11-18 20:08:08,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:08,607 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 1674 transitions. [2022-11-18 20:08:08,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1674 transitions. [2022-11-18 20:08:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:08:08,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:08,608 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] [2022-11-18 20:08:08,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:08,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:08,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-11-18 20:08:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:08,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986096293] [2022-11-18 20:08:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:08,823 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 [2022-11-18 20:08:08,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:08,824 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:08,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:09,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:08:09,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:09,109 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 [2022-11-18 20:08:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:09,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:09,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:09,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986096293] [2022-11-18 20:08:09,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986096293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:09,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:09,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50328509] [2022-11-18 20:08:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:09,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:09,367 INFO L87 Difference]: Start difference. First operand 1399 states and 1674 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:16,347 INFO L93 Difference]: Finished difference Result 2213 states and 2657 transitions. [2022-11-18 20:08:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:08:16,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-18 20:08:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:16,355 INFO L225 Difference]: With dead ends: 2213 [2022-11-18 20:08:16,356 INFO L226 Difference]: Without dead ends: 2213 [2022-11-18 20:08:16,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:16,357 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 2195 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:16,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 3291 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 20:08:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-18 20:08:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1395. [2022-11-18 20:08:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 854 states have (on average 1.9086651053864168) internal successors, (1630), 1373 states have internal predecessors, (1630), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 20:08:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1666 transitions. [2022-11-18 20:08:16,386 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1666 transitions. Word has length 35 [2022-11-18 20:08:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:16,387 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1666 transitions. [2022-11-18 20:08:16,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1666 transitions. [2022-11-18 20:08:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:08:16,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:16,389 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:16,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:16,602 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2063651411, now seen corresponding path program 1 times [2022-11-18 20:08:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:16,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426376140] [2022-11-18 20:08:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:16,604 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 [2022-11-18 20:08:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:16,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:16,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:16,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:08:16,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:17,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:17,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:17,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426376140] [2022-11-18 20:08:17,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426376140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:17,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:17,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571142086] [2022-11-18 20:08:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:17,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:17,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:17,074 INFO L87 Difference]: Start difference. First operand 1395 states and 1666 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:17,168 INFO L93 Difference]: Finished difference Result 1383 states and 1646 transitions. [2022-11-18 20:08:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:17,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-18 20:08:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:17,186 INFO L225 Difference]: With dead ends: 1383 [2022-11-18 20:08:17,186 INFO L226 Difference]: Without dead ends: 1383 [2022-11-18 20:08:17,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:17,188 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1113 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:17,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 2424 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:08:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-18 20:08:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2022-11-18 20:08:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 842 states have (on average 1.9121140142517814) internal successors, (1610), 1361 states have internal predecessors, (1610), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 20:08:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1646 transitions. [2022-11-18 20:08:17,218 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1646 transitions. Word has length 54 [2022-11-18 20:08:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:17,219 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1646 transitions. [2022-11-18 20:08:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1646 transitions. [2022-11-18 20:08:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 20:08:17,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:17,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:17,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:17,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:17,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -202865055, now seen corresponding path program 1 times [2022-11-18 20:08:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:17,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127682530] [2022-11-18 20:08:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:17,444 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 [2022-11-18 20:08:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:17,445 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:17,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:08:17,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:17,960 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:08:17,961 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 24 [2022-11-18 20:08:18,065 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:08:18,065 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 18 treesize of output 28 [2022-11-18 20:08:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:18,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:18,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:18,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127682530] [2022-11-18 20:08:18,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127682530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:18,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:18,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579131120] [2022-11-18 20:08:18,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:08:18,654 INFO L87 Difference]: Start difference. First operand 1383 states and 1646 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:24,590 INFO L93 Difference]: Finished difference Result 3211 states and 3774 transitions. [2022-11-18 20:08:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-18 20:08:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:24,597 INFO L225 Difference]: With dead ends: 3211 [2022-11-18 20:08:24,597 INFO L226 Difference]: Without dead ends: 3211 [2022-11-18 20:08:24,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:08:24,598 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 3291 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:24,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 2330 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1753 Invalid, 0 Unknown, 2 Unchecked, 5.8s Time] [2022-11-18 20:08:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2022-11-18 20:08:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1837. [2022-11-18 20:08:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1280 states have (on average 1.8984375) internal successors, (2430), 1802 states have internal predecessors, (2430), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-18 20:08:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2492 transitions. [2022-11-18 20:08:24,635 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2492 transitions. Word has length 62 [2022-11-18 20:08:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:24,636 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2492 transitions. [2022-11-18 20:08:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2492 transitions. [2022-11-18 20:08:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 20:08:24,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:24,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:24,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:24,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:24,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:24,851 INFO L85 PathProgramCache]: Analyzing trace with hash -202865054, now seen corresponding path program 1 times [2022-11-18 20:08:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:24,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756578465] [2022-11-18 20:08:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:24,852 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 [2022-11-18 20:08:24,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:24,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:24,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:25,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:08:25,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:25,369 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 [2022-11-18 20:08:25,470 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:08:25,470 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 [2022-11-18 20:08:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:26,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:26,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756578465] [2022-11-18 20:08:26,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756578465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:26,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:26,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286907406] [2022-11-18 20:08:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:26,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:26,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:08:26,293 INFO L87 Difference]: Start difference. First operand 1837 states and 2492 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:30,917 INFO L93 Difference]: Finished difference Result 1843 states and 2499 transitions. [2022-11-18 20:08:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-18 20:08:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:30,923 INFO L225 Difference]: With dead ends: 1843 [2022-11-18 20:08:30,924 INFO L226 Difference]: Without dead ends: 1843 [2022-11-18 20:08:30,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:08:30,925 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 111 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:30,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2396 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:08:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-18 20:08:30,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1842. [2022-11-18 20:08:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1284 states have (on average 1.895638629283489) internal successors, (2434), 1806 states have internal predecessors, (2434), 32 states have call successors, (32), 9 states have call predecessors, (32), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-18 20:08:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2498 transitions. [2022-11-18 20:08:30,958 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2498 transitions. Word has length 62 [2022-11-18 20:08:30,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:30,959 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2498 transitions. [2022-11-18 20:08:30,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2498 transitions. [2022-11-18 20:08:30,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:08:30,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:30,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:30,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:31,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash -904346310, now seen corresponding path program 1 times [2022-11-18 20:08:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:31,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231244783] [2022-11-18 20:08:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:31,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:31,176 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:31,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:31,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:08:31,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:31,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:31,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:31,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231244783] [2022-11-18 20:08:31,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231244783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:31,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:31,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:08:31,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95673221] [2022-11-18 20:08:31,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:31,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:31,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:08:31,629 INFO L87 Difference]: Start difference. First operand 1842 states and 2498 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:31,784 INFO L93 Difference]: Finished difference Result 1868 states and 2525 transitions. [2022-11-18 20:08:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:08:31,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-18 20:08:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:31,802 INFO L225 Difference]: With dead ends: 1868 [2022-11-18 20:08:31,803 INFO L226 Difference]: Without dead ends: 1868 [2022-11-18 20:08:31,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:31,806 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 19 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:31,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5905 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:08:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-11-18 20:08:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1866. [2022-11-18 20:08:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1302 states have (on average 1.8870967741935485) internal successors, (2457), 1826 states have internal predecessors, (2457), 34 states have call successors, (34), 13 states have call predecessors, (34), 11 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-18 20:08:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2525 transitions. [2022-11-18 20:08:31,854 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2525 transitions. Word has length 68 [2022-11-18 20:08:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:31,855 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 2525 transitions. [2022-11-18 20:08:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2525 transitions. [2022-11-18 20:08:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:08:31,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:31,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:31,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:32,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash -961994179, now seen corresponding path program 1 times [2022-11-18 20:08:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:32,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9198903] [2022-11-18 20:08:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:32,074 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 [2022-11-18 20:08:32,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:32,075 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:32,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:32,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:08:32,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:32,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:32,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:32,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9198903] [2022-11-18 20:08:32,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9198903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:32,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:32,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:08:32,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277434930] [2022-11-18 20:08:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:32,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:32,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:08:32,666 INFO L87 Difference]: Start difference. First operand 1866 states and 2525 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-11-18 20:08:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:32,935 INFO L93 Difference]: Finished difference Result 1878 states and 2539 transitions. [2022-11-18 20:08:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:08:32,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2022-11-18 20:08:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:32,941 INFO L225 Difference]: With dead ends: 1878 [2022-11-18 20:08:32,942 INFO L226 Difference]: Without dead ends: 1878 [2022-11-18 20:08:32,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:08:32,943 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 23 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:32,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4613 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:08:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-18 20:08:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1869. [2022-11-18 20:08:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1304 states have (on average 1.8857361963190185) internal successors, (2459), 1828 states have internal predecessors, (2459), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 20:08:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2528 transitions. [2022-11-18 20:08:33,021 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2528 transitions. Word has length 68 [2022-11-18 20:08:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:33,022 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2528 transitions. [2022-11-18 20:08:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-11-18 20:08:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2528 transitions. [2022-11-18 20:08:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:08:33,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:33,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:33,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:33,224 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223946, now seen corresponding path program 1 times [2022-11-18 20:08:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:33,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643410447] [2022-11-18 20:08:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:33,225 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 [2022-11-18 20:08:33,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:33,226 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:33,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:33,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:08:33,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:33,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:08:33,918 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2022-11-18 20:08:33,941 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:08:33,942 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 [2022-11-18 20:08:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:33,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:33,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:33,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643410447] [2022-11-18 20:08:33,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643410447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:33,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:33,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:08:33,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063696443] [2022-11-18 20:08:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-11-18 20:08:33,960 INFO L87 Difference]: Start difference. First operand 1869 states and 2528 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:08:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:40,481 INFO L93 Difference]: Finished difference Result 3193 states and 4238 transitions. [2022-11-18 20:08:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:08:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-18 20:08:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:40,486 INFO L225 Difference]: With dead ends: 3193 [2022-11-18 20:08:40,487 INFO L226 Difference]: Without dead ends: 3193 [2022-11-18 20:08:40,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-18 20:08:40,488 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 1620 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1612 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:40,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 3027 Invalid, 4371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2738 Invalid, 0 Unknown, 1612 Unchecked, 6.4s Time] [2022-11-18 20:08:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2022-11-18 20:08:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 1868. [2022-11-18 20:08:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1304 states have (on average 1.88420245398773) internal successors, (2457), 1827 states have internal predecessors, (2457), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 20:08:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2526 transitions. [2022-11-18 20:08:40,528 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2526 transitions. Word has length 73 [2022-11-18 20:08:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:40,529 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2526 transitions. [2022-11-18 20:08:40,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:08:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2526 transitions. [2022-11-18 20:08:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:08:40,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:40,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:40,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:40,749 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223945, now seen corresponding path program 1 times [2022-11-18 20:08:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:40,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123958717] [2022-11-18 20:08:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:40,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:40,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:40,752 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:40,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:41,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:08:41,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:41,390 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 [2022-11-18 20:08:41,397 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 [2022-11-18 20:08:42,033 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1107 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |alt_malloc_#res.base| v_ArrVal_1107))) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2022-11-18 20:08:42,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:42,059 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 [2022-11-18 20:08:42,078 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:08:42,079 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 [2022-11-18 20:08:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:42,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:42,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:42,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123958717] [2022-11-18 20:08:42,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123958717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:42,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:42,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:08:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750470416] [2022-11-18 20:08:42,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:42,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:08:42,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:08:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-18 20:08:42,105 INFO L87 Difference]: Start difference. First operand 1868 states and 2526 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:08:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:51,997 INFO L93 Difference]: Finished difference Result 3264 states and 4363 transitions. [2022-11-18 20:08:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:08:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-18 20:08:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:52,004 INFO L225 Difference]: With dead ends: 3264 [2022-11-18 20:08:52,004 INFO L226 Difference]: Without dead ends: 3264 [2022-11-18 20:08:52,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-18 20:08:52,005 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 2396 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 5893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1903 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:52,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 2955 Invalid, 5893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3959 Invalid, 0 Unknown, 1903 Unchecked, 9.7s Time] [2022-11-18 20:08:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-11-18 20:08:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 1864. [2022-11-18 20:08:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1308 states have (on average 1.8692660550458715) internal successors, (2445), 1823 states have internal predecessors, (2445), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 20:08:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2514 transitions. [2022-11-18 20:08:52,040 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2514 transitions. Word has length 73 [2022-11-18 20:08:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:52,041 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2514 transitions. [2022-11-18 20:08:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:08:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2514 transitions. [2022-11-18 20:08:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 20:08:52,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:52,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:52,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:52,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1696557543, now seen corresponding path program 1 times [2022-11-18 20:08:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:52,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55087049] [2022-11-18 20:08:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:52,260 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 [2022-11-18 20:08:52,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:52,261 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:52,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:52,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:08:52,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:52,676 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 [2022-11-18 20:08:52,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:08:52,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-18 20:08:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:52,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:52,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:52,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55087049] [2022-11-18 20:08:52,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55087049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:52,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:52,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:08:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425963668] [2022-11-18 20:08:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:52,781 INFO L87 Difference]: Start difference. First operand 1864 states and 2514 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:08:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:58,754 INFO L93 Difference]: Finished difference Result 1879 states and 2530 transitions. [2022-11-18 20:08:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:08:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-11-18 20:08:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:58,771 INFO L225 Difference]: With dead ends: 1879 [2022-11-18 20:08:58,771 INFO L226 Difference]: Without dead ends: 1879 [2022-11-18 20:08:58,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:08:58,772 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 23 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:58,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4917 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-18 20:08:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-18 20:08:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1878. [2022-11-18 20:08:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1320 states have (on average 1.8643939393939395) internal successors, (2461), 1835 states have internal predecessors, (2461), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 20:08:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2530 transitions. [2022-11-18 20:08:58,810 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2530 transitions. Word has length 80 [2022-11-18 20:08:58,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:58,812 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2530 transitions. [2022-11-18 20:08:58,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:08:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2530 transitions. [2022-11-18 20:08:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 20:08:58,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:58,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:58,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:08:59,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:08:59,031 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:08:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1053676349, now seen corresponding path program 1 times [2022-11-18 20:08:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:08:59,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395255921] [2022-11-18 20:08:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:59,032 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 [2022-11-18 20:08:59,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:08:59,033 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:08:59,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:08:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:59,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:08:59,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:59,563 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 5 [2022-11-18 20:08:59,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:08:59,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:08:59,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-18 20:08:59,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 20:08:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:59,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:59,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:08:59,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395255921] [2022-11-18 20:08:59,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395255921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:59,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:59,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:08:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504658471] [2022-11-18 20:08:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:59,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:08:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:08:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:08:59,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:08:59,783 INFO L87 Difference]: Start difference. First operand 1878 states and 2530 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:09:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:08,064 INFO L93 Difference]: Finished difference Result 1878 states and 2528 transitions. [2022-11-18 20:09:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:09:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-18 20:09:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:08,068 INFO L225 Difference]: With dead ends: 1878 [2022-11-18 20:09:08,068 INFO L226 Difference]: Without dead ends: 1878 [2022-11-18 20:09:08,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:09:08,069 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 19 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5933 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:08,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5933 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-18 20:09:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-18 20:09:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1878. [2022-11-18 20:09:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1320 states have (on average 1.8628787878787878) internal successors, (2459), 1835 states have internal predecessors, (2459), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-18 20:09:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2528 transitions. [2022-11-18 20:09:08,098 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2528 transitions. Word has length 81 [2022-11-18 20:09:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:08,099 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2528 transitions. [2022-11-18 20:09:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:09:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2528 transitions. [2022-11-18 20:09:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 20:09:08,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:08,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:08,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:08,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:08,316 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:09:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash 491350102, now seen corresponding path program 1 times [2022-11-18 20:09:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948395283] [2022-11-18 20:09:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:08,317 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 [2022-11-18 20:09:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:08,319 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:09:08,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:09:08,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:08,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:08,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:08,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948395283] [2022-11-18 20:09:08,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948395283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:08,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:08,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:09:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032526989] [2022-11-18 20:09:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:09:08,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:09:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:09:08,875 INFO L87 Difference]: Start difference. First operand 1878 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2022-11-18 20:09:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:08,977 INFO L93 Difference]: Finished difference Result 1894 states and 2546 transitions. [2022-11-18 20:09:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 88 [2022-11-18 20:09:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:08,983 INFO L225 Difference]: With dead ends: 1894 [2022-11-18 20:09:08,983 INFO L226 Difference]: Without dead ends: 1888 [2022-11-18 20:09:08,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:09:08,984 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 11 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4672 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:08,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4672 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:09:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-18 20:09:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2022-11-18 20:09:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1328 states have (on average 1.8591867469879517) internal successors, (2469), 1845 states have internal predecessors, (2469), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:09:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2540 transitions. [2022-11-18 20:09:09,012 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2540 transitions. Word has length 88 [2022-11-18 20:09:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:09,013 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2540 transitions. [2022-11-18 20:09:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2022-11-18 20:09:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2540 transitions. [2022-11-18 20:09:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:09:09,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:09,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:09,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:09,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:09,235 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:09:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:09,236 INFO L85 PathProgramCache]: Analyzing trace with hash -385822936, now seen corresponding path program 1 times [2022-11-18 20:09:09,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:09,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296948784] [2022-11-18 20:09:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:09,236 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 [2022-11-18 20:09:09,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:09,237 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:09:09,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:09,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:09:09,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:09,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:09,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:09,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296948784] [2022-11-18 20:09:09,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296948784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:09,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:09:09,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 20:09:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351287767] [2022-11-18 20:09:09,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:09:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:09:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:09:09,969 INFO L87 Difference]: Start difference. First operand 1888 states and 2540 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:10,307 INFO L93 Difference]: Finished difference Result 1914 states and 2570 transitions. [2022-11-18 20:09:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:09:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-11-18 20:09:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:10,315 INFO L225 Difference]: With dead ends: 1914 [2022-11-18 20:09:10,315 INFO L226 Difference]: Without dead ends: 1902 [2022-11-18 20:09:10,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:09:10,316 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 45 mSDsluCounter, 7006 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:10,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8181 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:09:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-11-18 20:09:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1896. [2022-11-18 20:09:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1336 states have (on average 1.8555389221556886) internal successors, (2479), 1853 states have internal predecessors, (2479), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:09:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2550 transitions. [2022-11-18 20:09:10,345 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2550 transitions. Word has length 89 [2022-11-18 20:09:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:10,345 INFO L495 AbstractCegarLoop]: Abstraction has 1896 states and 2550 transitions. [2022-11-18 20:09:10,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2550 transitions. [2022-11-18 20:09:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:09:10,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:10,347 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:10,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:10,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:10,563 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:09:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 55938262, now seen corresponding path program 2 times [2022-11-18 20:09:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:10,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599799406] [2022-11-18 20:09:10,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:09:10,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:10,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:10,565 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:09:10,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:11,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:09:11,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:11,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:09:11,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:11,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:11,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:11,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599799406] [2022-11-18 20:09:11,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599799406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:11,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:09:11,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:09:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134619142] [2022-11-18 20:09:11,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:11,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:09:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:09:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:09:11,853 INFO L87 Difference]: Start difference. First operand 1896 states and 2550 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:12,924 INFO L93 Difference]: Finished difference Result 1950 states and 2618 transitions. [2022-11-18 20:09:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:09:12,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-11-18 20:09:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:12,933 INFO L225 Difference]: With dead ends: 1950 [2022-11-18 20:09:12,934 INFO L226 Difference]: Without dead ends: 1938 [2022-11-18 20:09:12,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:09:12,935 INFO L413 NwaCegarLoop]: 1181 mSDtfsCounter, 98 mSDsluCounter, 9384 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:12,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10565 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:09:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-11-18 20:09:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1914. [2022-11-18 20:09:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1354 states have (on average 1.8485967503692762) internal successors, (2503), 1871 states have internal predecessors, (2503), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:09:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2574 transitions. [2022-11-18 20:09:12,968 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2574 transitions. Word has length 92 [2022-11-18 20:09:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:12,968 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2574 transitions. [2022-11-18 20:09:12,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2574 transitions. [2022-11-18 20:09:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 20:09:12,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:12,970 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:13,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:13,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:09:13,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash 675941270, now seen corresponding path program 3 times [2022-11-18 20:09:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:13,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594689709] [2022-11-18 20:09:13,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:09:13,198 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 [2022-11-18 20:09:13,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:13,200 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:09:13,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:14,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:09:14,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:14,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:09:14,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:14,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:15,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:15,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594689709] [2022-11-18 20:09:15,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594689709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:15,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:09:15,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-18 20:09:15,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325805835] [2022-11-18 20:09:15,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:15,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:09:15,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:09:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:09:15,962 INFO L87 Difference]: Start difference. First operand 1914 states and 2574 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:21,100 INFO L93 Difference]: Finished difference Result 2022 states and 2722 transitions. [2022-11-18 20:09:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:09:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-18 20:09:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:21,103 INFO L225 Difference]: With dead ends: 2022 [2022-11-18 20:09:21,104 INFO L226 Difference]: Without dead ends: 2004 [2022-11-18 20:09:21,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 20:09:21,105 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 296 mSDsluCounter, 15414 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 16607 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:21,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 16607 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:09:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-11-18 20:09:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1950. [2022-11-18 20:09:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1390 states have (on average 1.8338129496402877) internal successors, (2549), 1907 states have internal predecessors, (2549), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:09:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2620 transitions. [2022-11-18 20:09:21,133 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2620 transitions. Word has length 98 [2022-11-18 20:09:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:21,134 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 2620 transitions. [2022-11-18 20:09:21,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2620 transitions. [2022-11-18 20:09:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 20:09:21,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:21,136 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:21,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:21,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:21,342 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:09:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2055264534, now seen corresponding path program 4 times [2022-11-18 20:09:21,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:21,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538226706] [2022-11-18 20:09:21,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:09:21,343 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 [2022-11-18 20:09:21,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:21,344 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:09:21,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:21,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:09:21,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:21,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:09:21,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:22,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:25,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:25,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538226706] [2022-11-18 20:09:25,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538226706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:25,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:09:25,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-18 20:09:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104860641] [2022-11-18 20:09:25,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 20:09:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 20:09:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 20:09:25,532 INFO L87 Difference]: Start difference. First operand 1950 states and 2620 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:40,074 INFO L93 Difference]: Finished difference Result 2156 states and 2890 transitions. [2022-11-18 20:09:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-18 20:09:40,075 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-11-18 20:09:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:40,079 INFO L225 Difference]: With dead ends: 2156 [2022-11-18 20:09:40,079 INFO L226 Difference]: Without dead ends: 2144 [2022-11-18 20:09:40,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-11-18 20:09:40,084 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 503 mSDsluCounter, 31354 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 32569 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:40,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 32569 Invalid, 2813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [344 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-18 20:09:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2022-11-18 20:09:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2018. [2022-11-18 20:09:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1458 states have (on average 1.8113854595336076) internal successors, (2641), 1975 states have internal predecessors, (2641), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:09:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2712 transitions. [2022-11-18 20:09:40,120 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2712 transitions. Word has length 110 [2022-11-18 20:09:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:40,120 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2712 transitions. [2022-11-18 20:09:40,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:09:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2712 transitions. [2022-11-18 20:09:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:09:40,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:40,123 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:40,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:40,342 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:09:40,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1555511766, now seen corresponding path program 5 times [2022-11-18 20:09:40,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:40,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365321808] [2022-11-18 20:09:40,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:09:40,344 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 [2022-11-18 20:09:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:40,346 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:09:40,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:09:42,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-18 20:09:42,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:42,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 20:09:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:42,292 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 [2022-11-18 20:09:42,553 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:09:42,553 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 [2022-11-18 20:09:42,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:09:42,772 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 [2022-11-18 20:09:46,051 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:09:46,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:09:46,106 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 33 treesize of output 15 [2022-11-18 20:09:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:09:46,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:46,627 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2663 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2663) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2022-11-18 20:09:46,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365321808] [2022-11-18 20:09:46,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365321808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1973188507] [2022-11-18 20:09:46,630 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:09:46,631 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:09:46,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:09:46,636 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:09:46,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-18 20:11:02,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-18 20:11:02,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:02,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 20:11:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:02,696 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 [2022-11-18 20:11:02,865 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:11:02,866 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 [2022-11-18 20:11:02,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:11:02,970 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 [2022-11-18 20:11:05,904 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:11:05,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:11:05,968 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 33 treesize of output 15 [2022-11-18 20:11:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:11:05,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:06,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1973188507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:06,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:06,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-11-18 20:11:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519575330] [2022-11-18 20:11:06,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:06,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:11:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:11:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=217, Unknown=15, NotChecked=30, Total=306 [2022-11-18 20:11:06,496 INFO L87 Difference]: Start difference. First operand 2018 states and 2712 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2022-11-18 20:11:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:20,334 INFO L93 Difference]: Finished difference Result 3576 states and 4756 transitions. [2022-11-18 20:11:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:11:20,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 132 [2022-11-18 20:11:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:20,341 INFO L225 Difference]: With dead ends: 3576 [2022-11-18 20:11:20,342 INFO L226 Difference]: Without dead ends: 3576 [2022-11-18 20:11:20,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 166 SyntacticMatches, 89 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=98, Invalid=483, Unknown=23, NotChecked=46, Total=650 [2022-11-18 20:11:20,343 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1799 mSDsluCounter, 8678 mSDsCounter, 0 mSdLazyCounter, 6246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9839 SdHoareTripleChecker+Invalid, 12032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5755 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:20,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 9839 Invalid, 12032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 6246 Invalid, 0 Unknown, 5755 Unchecked, 13.2s Time] [2022-11-18 20:11:20,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-11-18 20:11:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 2015. [2022-11-18 20:11:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1458 states have (on average 1.8072702331961592) internal successors, (2635), 1972 states have internal predecessors, (2635), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:11:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2706 transitions. [2022-11-18 20:11:20,379 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2706 transitions. Word has length 132 [2022-11-18 20:11:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:20,379 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 2706 transitions. [2022-11-18 20:11:20,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2022-11-18 20:11:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2706 transitions. [2022-11-18 20:11:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:11:20,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:20,381 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:20,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:20,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:20,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:20,790 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:11:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1555511767, now seen corresponding path program 1 times [2022-11-18 20:11:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:20,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496659862] [2022-11-18 20:11:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:20,792 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 [2022-11-18 20:11:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:20,793 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:11:20,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 20:11:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-18 20:11:21,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:21,906 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 [2022-11-18 20:11:22,266 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 [2022-11-18 20:11:22,331 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:11:22,332 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 [2022-11-18 20:11:22,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:11:22,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:11:22,562 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 18 treesize of output 10 [2022-11-18 20:11:22,567 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 7 treesize of output 3 [2022-11-18 20:11:25,159 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-18 20:11:25,213 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:11:25,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:11:25,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:11:25,290 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 25 treesize of output 13 [2022-11-18 20:11:25,299 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 [2022-11-18 20:11:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:11:25,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:26,557 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:11:26,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496659862] [2022-11-18 20:11:26,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496659862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [452453814] [2022-11-18 20:11:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:26,566 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:11:26,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:11:26,567 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:11:26,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-18 20:13:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-18 20:13:21,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:21,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:13:22,097 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 [2022-11-18 20:13:22,126 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:13:22,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 20:13:22,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:13:22,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:13:22,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 20:13:22,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 20:13:24,886 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-18 20:13:24,975 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:13:24,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:13:24,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:13:25,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 20:13:25,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 20:13:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:13:25,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:26,207 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:13:26,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [452453814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:26,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:13:26,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2022-11-18 20:13:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699313373] [2022-11-18 20:13:26,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:26,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:13:26,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:13:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=369, Unknown=5, NotChecked=164, Total=600 [2022-11-18 20:13:26,215 INFO L87 Difference]: Start difference. First operand 2015 states and 2706 transitions. Second operand has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:13:27,174 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-18 20:13:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:44,469 INFO L93 Difference]: Finished difference Result 3336 states and 4412 transitions. [2022-11-18 20:13:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:13:44,470 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 132 [2022-11-18 20:13:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:44,476 INFO L225 Difference]: With dead ends: 3336 [2022-11-18 20:13:44,476 INFO L226 Difference]: Without dead ends: 3336 [2022-11-18 20:13:44,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 160 SyntacticMatches, 89 SemanticMatches, 31 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=117, Invalid=653, Unknown=6, NotChecked=280, Total=1056 [2022-11-18 20:13:44,477 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 2958 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 8160 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 7958 SdHoareTripleChecker+Invalid, 15059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6862 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:44,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 7958 Invalid, 15059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 8160 Invalid, 0 Unknown, 6862 Unchecked, 17.6s Time] [2022-11-18 20:13:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2022-11-18 20:13:44,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2014. [2022-11-18 20:13:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1458 states have (on average 1.8058984910836762) internal successors, (2633), 1971 states have internal predecessors, (2633), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:13:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2704 transitions. [2022-11-18 20:13:44,511 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2704 transitions. Word has length 132 [2022-11-18 20:13:44,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:44,511 INFO L495 AbstractCegarLoop]: Abstraction has 2014 states and 2704 transitions. [2022-11-18 20:13:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:13:44,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2704 transitions. [2022-11-18 20:13:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:13:44,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:44,514 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:44,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 20:13:44,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:44,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:13:44,932 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:13:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1849192087, now seen corresponding path program 1 times [2022-11-18 20:13:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:44,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819839985] [2022-11-18 20:13:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:44,933 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 [2022-11-18 20:13:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:44,934 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:13:44,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 20:13:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:46,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 20:13:46,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:46,054 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 [2022-11-18 20:13:46,264 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:13:46,265 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 [2022-11-18 20:13:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:13:46,460 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 [2022-11-18 20:13:49,000 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_47 (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_47) (_ bv1 1))) (not (= v_arrayElimCell_47 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|) (_ bv1 1))))) (exists ((v_ArrVal_4723 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4723)))) is different from true [2022-11-18 20:13:49,075 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:13:49,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:13:49,222 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:13:49,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:13:49,255 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 33 treesize of output 15 [2022-11-18 20:13:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:13:49,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:49,392 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-18 20:13:49,403 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-18 20:13:49,750 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4770 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4770))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4724)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:13:49,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:49,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819839985] [2022-11-18 20:13:49,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819839985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336400155] [2022-11-18 20:13:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:13:49,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:13:49,754 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:13:49,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-18 20:13:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-18 20:13:55,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:55,321 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 [2022-11-18 20:13:55,475 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:13:55,475 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 [2022-11-18 20:13:55,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:13:55,559 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 [2022-11-18 20:13:58,092 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:13:58,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:13:58,195 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:13:58,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:13:58,224 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 33 treesize of output 15 [2022-11-18 20:13:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:13:58,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:00,359 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5210) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:14:00,740 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5256))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5210)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:14:00,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1336400155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:00,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:00,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2022-11-18 20:14:00,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101847006] [2022-11-18 20:14:00,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:14:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:14:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:14:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=250, Unknown=22, NotChecked=222, Total=552 [2022-11-18 20:14:00,745 INFO L87 Difference]: Start difference. First operand 2014 states and 2704 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:14:01,594 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5209 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5209))) (exists ((v_arrayElimCell_47 (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_47) (_ bv1 1))) (not (= v_arrayElimCell_47 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|) (_ bv1 1))))) (exists ((v_ArrVal_4723 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4723)))) is different from true [2022-11-18 20:14:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:13,102 INFO L93 Difference]: Finished difference Result 3574 states and 4752 transitions. [2022-11-18 20:14:13,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:14:13,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 135 [2022-11-18 20:14:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:13,106 INFO L225 Difference]: With dead ends: 3574 [2022-11-18 20:14:13,106 INFO L226 Difference]: Without dead ends: 3574 [2022-11-18 20:14:13,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 173 SyntacticMatches, 89 SemanticMatches, 31 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=113, Invalid=534, Unknown=31, NotChecked=378, Total=1056 [2022-11-18 20:14:13,107 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 1814 mSDsluCounter, 7866 mSDsCounter, 0 mSdLazyCounter, 5429 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 9016 SdHoareTripleChecker+Invalid, 13601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8140 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:13,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 9016 Invalid, 13601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 5429 Invalid, 0 Unknown, 8140 Unchecked, 11.8s Time] [2022-11-18 20:14:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2022-11-18 20:14:13,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2013. [2022-11-18 20:14:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1458 states have (on average 1.8045267489711934) internal successors, (2631), 1970 states have internal predecessors, (2631), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:14:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2702 transitions. [2022-11-18 20:14:13,138 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2702 transitions. Word has length 135 [2022-11-18 20:14:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:13,138 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 2702 transitions. [2022-11-18 20:14:13,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:14:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2702 transitions. [2022-11-18 20:14:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:14:13,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:13,140 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:13,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:13,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:14:13,554 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:14:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1849192088, now seen corresponding path program 1 times [2022-11-18 20:14:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:14:13,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230220806] [2022-11-18 20:14:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:13,556 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 [2022-11-18 20:14:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:14:13,557 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:14:13,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 20:14:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:14,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-18 20:14:14,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:14,716 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 [2022-11-18 20:14:15,116 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 [2022-11-18 20:14:15,167 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:14:15,167 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 [2022-11-18 20:14:15,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:14:15,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:14:15,395 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 18 treesize of output 10 [2022-11-18 20:14:15,400 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 7 treesize of output 3 [2022-11-18 20:14:18,086 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5740 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5740))) (exists ((v_arrayElimCell_59 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_59) (_ bv44 32))) (exists ((v_ArrVal_5741 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5741) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 20:14:18,141 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:14:18,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:14:18,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:14:18,347 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:14:18,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:14:18,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:14:18,396 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 25 treesize of output 13 [2022-11-18 20:14:18,405 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 [2022-11-18 20:14:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:14:18,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:18,777 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:14:18,826 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-18 20:14:19,981 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) .cse0 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2022-11-18 20:14:19,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:14:19,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230220806] [2022-11-18 20:14:19,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230220806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:19,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1173043864] [2022-11-18 20:14:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,992 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:14:19,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:14:19,993 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:14:19,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-18 20:14:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-18 20:14:25,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:25,454 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 [2022-11-18 20:14:25,464 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 [2022-11-18 20:14:26,441 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:14:26,442 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 [2022-11-18 20:14:26,451 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 [2022-11-18 20:14:26,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:14:26,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:14:26,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-18 20:14:26,853 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 7 treesize of output 3 [2022-11-18 20:14:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:32,890 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 16 treesize of output 18 [2022-11-18 20:14:33,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:33,285 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 60 [2022-11-18 20:14:33,311 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-18 20:14:33,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 44 [2022-11-18 20:14:33,526 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 17 treesize of output 9 [2022-11-18 20:14:33,530 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 [2022-11-18 20:14:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:14:33,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:34,302 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 231 treesize of output 159 [2022-11-18 20:14:39,837 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (forall ((v_ArrVal_6278 (_ BitVec 32))) (let ((.cse0 (select (select (store .cse1 v_arrayElimCell_77 (store (select .cse1 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse2) v_ArrVal_6278)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (bvule (bvadd .cse2 (_ bv20 32)) (select |c_#length| v_arrayElimCell_77))))))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (.cse5 (select |c_#length| v_arrayElimCell_77))) (or (forall ((v_prenex_6 (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv8 32) (select (select (store .cse6 v_arrayElimCell_77 (store (select .cse6 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse7) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (or (forall ((v_ArrVal_6279 (_ BitVec 32))) (bvule .cse4 (select |c_#length| v_ArrVal_6279))) (bvule .cse4 .cse5)))) (not (bvule (bvadd .cse7 (_ bv20 32)) .cse5)))))))) is different from false [2022-11-18 20:14:39,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1173043864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:39,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:39,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2022-11-18 20:14:39,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805635272] [2022-11-18 20:14:39,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:14:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:14:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:14:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1063, Unknown=33, NotChecked=350, Total=1560 [2022-11-18 20:14:39,876 INFO L87 Difference]: Start difference. First operand 2013 states and 2702 transitions. Second operand has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:15:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:12,496 INFO L93 Difference]: Finished difference Result 2868 states and 3816 transitions. [2022-11-18 20:15:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:15:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 135 [2022-11-18 20:15:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:12,502 INFO L225 Difference]: With dead ends: 2868 [2022-11-18 20:15:12,502 INFO L226 Difference]: Without dead ends: 2868 [2022-11-18 20:15:12,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 160 SyntacticMatches, 88 SemanticMatches, 49 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=219, Invalid=1808, Unknown=63, NotChecked=460, Total=2550 [2022-11-18 20:15:12,505 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 1427 mSDsluCounter, 12858 mSDsCounter, 0 mSdLazyCounter, 11392 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 14148 SdHoareTripleChecker+Invalid, 21810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 11392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10375 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:12,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 14148 Invalid, 21810 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [43 Valid, 11392 Invalid, 0 Unknown, 10375 Unchecked, 30.6s Time] [2022-11-18 20:15:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-11-18 20:15:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2012. [2022-11-18 20:15:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1458 states have (on average 1.8031550068587106) internal successors, (2629), 1969 states have internal predecessors, (2629), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:15:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2700 transitions. [2022-11-18 20:15:12,562 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2700 transitions. Word has length 135 [2022-11-18 20:15:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:12,562 INFO L495 AbstractCegarLoop]: Abstraction has 2012 states and 2700 transitions. [2022-11-18 20:15:12,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:15:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2700 transitions. [2022-11-18 20:15:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:15:12,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:12,565 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:12,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:12,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:12,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:15:12,991 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:15:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2031259997, now seen corresponding path program 1 times [2022-11-18 20:15:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:12,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723878043] [2022-11-18 20:15:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:12,993 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 [2022-11-18 20:15:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:12,996 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:15:13,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 20:15:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:14,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-18 20:15:14,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:14,585 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 [2022-11-18 20:15:14,885 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:15:14,886 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 [2022-11-18 20:15:14,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:15:15,098 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 [2022-11-18 20:15:18,173 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20| (_ BitVec 32)) (v_arrayElimCell_80 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_80) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_80 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|) (_ bv1 1))))) (exists ((v_ArrVal_6781 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6781)))) is different from true [2022-11-18 20:15:18,265 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:15:18,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:15:18,435 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:15:18,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:15:18,581 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:15:18,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:15:18,614 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 33 treesize of output 15 [2022-11-18 20:15:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:15:18,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:20,904 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:15:20,926 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:15:20,944 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:15:21,423 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6829 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6829))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:15:21,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723878043] [2022-11-18 20:15:21,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723878043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [635205260] [2022-11-18 20:15:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:21,428 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:15:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:15:21,429 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:15:21,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-18 20:15:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:28,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 20:15:28,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:28,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:15:28,377 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:15:28,377 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 [2022-11-18 20:15:28,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:15:28,491 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 [2022-11-18 20:15:31,748 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:15:31,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:15:31,876 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:15:31,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:15:31,984 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:15:31,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:15:32,017 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 33 treesize of output 15 [2022-11-18 20:15:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:15:32,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:34,181 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:15:34,199 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:15:34,676 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7331))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:15:34,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [635205260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:34,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:34,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2022-11-18 20:15:34,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114645688] [2022-11-18 20:15:34,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:34,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:15:34,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:34,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:15:34,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=280, Unknown=27, NotChecked=328, Total=702 [2022-11-18 20:15:34,683 INFO L87 Difference]: Start difference. First operand 2012 states and 2700 transitions. Second operand has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:15:36,007 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20| (_ BitVec 32)) (v_arrayElimCell_80 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_80) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_80 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|) (_ bv1 1))))) (exists ((v_ArrVal_7283 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7283) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6781 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6781)))) is different from true [2022-11-18 20:15:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:55,099 INFO L93 Difference]: Finished difference Result 3572 states and 4748 transitions. [2022-11-18 20:15:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:15:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 138 [2022-11-18 20:15:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:55,103 INFO L225 Difference]: With dead ends: 3572 [2022-11-18 20:15:55,104 INFO L226 Difference]: Without dead ends: 3572 [2022-11-18 20:15:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 181 SyntacticMatches, 90 SemanticMatches, 34 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=36, NotChecked=522, Total=1260 [2022-11-18 20:15:55,105 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1814 mSDsluCounter, 10822 mSDsCounter, 0 mSdLazyCounter, 7507 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 11971 SdHoareTripleChecker+Invalid, 12432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 7507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4892 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:55,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 11971 Invalid, 12432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 7507 Invalid, 0 Unknown, 4892 Unchecked, 19.6s Time] [2022-11-18 20:15:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2022-11-18 20:15:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2011. [2022-11-18 20:15:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1458 states have (on average 1.8017832647462277) internal successors, (2627), 1968 states have internal predecessors, (2627), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:15:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2698 transitions. [2022-11-18 20:15:55,152 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2698 transitions. Word has length 138 [2022-11-18 20:15:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:55,153 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 2698 transitions. [2022-11-18 20:15:55,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:15:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2698 transitions. [2022-11-18 20:15:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:15:55,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:55,155 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:55,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:55,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:15:55,569 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:15:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2031259998, now seen corresponding path program 1 times [2022-11-18 20:15:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:55,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138284882] [2022-11-18 20:15:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:55,571 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 [2022-11-18 20:15:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:55,572 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:15:55,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 20:15:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:56,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-18 20:15:56,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:56,939 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 [2022-11-18 20:15:57,410 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 [2022-11-18 20:15:57,477 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:15:57,477 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 [2022-11-18 20:15:57,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:15:57,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:15:57,745 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 18 treesize of output 10 [2022-11-18 20:15:57,753 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 7 treesize of output 3 [2022-11-18 20:16:01,066 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:16:01,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:16:01,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:16:01,294 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:16:01,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:16:01,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:16:01,486 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:16:01,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:16:01,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:16:01,542 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 [2022-11-18 20:16:01,546 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 25 treesize of output 13 [2022-11-18 20:16:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:16:01,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:01,944 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:16:01,985 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2022-11-18 20:16:02,072 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2022-11-18 20:16:02,248 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7832))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7833) .cse3 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2022-11-18 20:16:05,384 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927) .cse1 v_ArrVal_7833) (select (select (store .cse2 .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7834))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7832))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927) .cse4 v_ArrVal_7833) .cse5 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2022-11-18 20:16:05,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:05,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138284882] [2022-11-18 20:16:05,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138284882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:05,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1766006594] [2022-11-18 20:16:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:05,401 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:16:05,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:16:05,402 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:16:05,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-18 20:18:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:10,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-18 20:18:10,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:10,316 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 [2022-11-18 20:18:10,853 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 [2022-11-18 20:18:10,905 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:18:10,906 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 [2022-11-18 20:18:11,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:18:11,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:18:11,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 20:18:11,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 20:18:15,814 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_8426 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8426))) (exists ((v_ArrVal_8427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8427) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 20:18:15,913 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:18:15,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:18:15,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:18:16,305 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:18:16,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:18:16,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:18:16,591 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:18:16,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:18:16,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:18:16,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 20:18:16,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 20:18:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:18:16,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:16,773 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:18:16,817 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-18 20:18:17,010 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8429))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8428) .cse2 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2022-11-18 20:18:17,098 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2022-11-18 20:18:18,804 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse6 v_ArrVal_8428) (select (select (store .cse7 .cse6 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2022-11-18 20:18:18,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1766006594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:18,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:18,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2022-11-18 20:18:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146001519] [2022-11-18 20:18:18,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:18:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:18:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:18:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=566, Unknown=29, NotChecked=638, Total=1332 [2022-11-18 20:18:18,824 INFO L87 Difference]: Start difference. First operand 2011 states and 2698 transitions. Second operand has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:18:21,483 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_8426 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8426))) (exists ((v_ArrVal_7830 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7830))) (exists ((v_ArrVal_7831 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7831))) (exists ((v_ArrVal_8427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8427) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 20:19:20,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:20,936 INFO L93 Difference]: Finished difference Result 3332 states and 4404 transitions. [2022-11-18 20:19:20,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:19:20,937 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 138 [2022-11-18 20:19:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:20,941 INFO L225 Difference]: With dead ends: 3332 [2022-11-18 20:19:20,941 INFO L226 Difference]: Without dead ends: 3332 [2022-11-18 20:19:20,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 172 SyntacticMatches, 89 SemanticMatches, 46 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=181, Invalid=1088, Unknown=39, NotChecked=948, Total=2256 [2022-11-18 20:19:20,943 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 2157 mSDsluCounter, 10895 mSDsCounter, 0 mSdLazyCounter, 16228 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 11997 SdHoareTripleChecker+Invalid, 23239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 16228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6978 IncrementalHoareTripleChecker+Unchecked, 60.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:20,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 11997 Invalid, 23239 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [33 Valid, 16228 Invalid, 0 Unknown, 6978 Unchecked, 60.5s Time] [2022-11-18 20:19:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-11-18 20:19:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2010. [2022-11-18 20:19:20,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1458 states have (on average 1.800411522633745) internal successors, (2625), 1967 states have internal predecessors, (2625), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:19:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2696 transitions. [2022-11-18 20:19:20,977 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2696 transitions. Word has length 138 [2022-11-18 20:19:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:20,978 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2696 transitions. [2022-11-18 20:19:20,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:19:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2696 transitions. [2022-11-18 20:19:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:19:20,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:20,981 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:21,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:21,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:19:21,402 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:19:21,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1472678910, now seen corresponding path program 1 times [2022-11-18 20:19:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:19:21,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920640509] [2022-11-18 20:19:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:21,404 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 [2022-11-18 20:19:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:19:21,406 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:19:21,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 20:19:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 20:19:23,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:23,262 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 [2022-11-18 20:19:23,733 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:19:23,733 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 [2022-11-18 20:19:23,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:19:24,081 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 [2022-11-18 20:19:28,643 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:28,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:28,910 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:28,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:29,134 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:29,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:29,357 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:29,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:29,400 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 33 treesize of output 15 [2022-11-18 20:19:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:19:29,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:34,088 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:19:34,113 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:19:34,153 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-18 20:19:34,183 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:19:34,767 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9041))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:19:34,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:19:34,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920640509] [2022-11-18 20:19:34,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920640509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:34,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1966527043] [2022-11-18 20:19:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:34,774 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:19:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:19:34,776 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:19:34,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-18 20:19:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:19:44,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:44,623 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 [2022-11-18 20:19:45,002 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:19:45,002 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 [2022-11-18 20:19:45,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:19:45,147 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 [2022-11-18 20:19:49,601 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:49,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:49,767 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:49,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:49,865 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:49,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:49,964 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:19:49,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:19:50,004 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 33 treesize of output 15 [2022-11-18 20:19:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-18 20:19:50,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:50,057 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:19:50,077 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:19:50,108 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:19:50,132 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:19:50,169 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9511))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-18 20:19:50,199 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 20:19:51,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1966527043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:51,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:19:51,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2022-11-18 20:19:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898268892] [2022-11-18 20:19:51,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:19:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:19:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:19:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=379, Unknown=39, NotChecked=550, Total=1056 [2022-11-18 20:19:51,067 INFO L87 Difference]: Start difference. First operand 2010 states and 2696 transitions. Second operand has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 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) [2022-11-18 20:20:17,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:17,219 INFO L93 Difference]: Finished difference Result 3570 states and 4744 transitions. [2022-11-18 20:20:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:20:17,220 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 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 141 [2022-11-18 20:20:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:17,223 INFO L225 Difference]: With dead ends: 3570 [2022-11-18 20:20:17,224 INFO L226 Difference]: Without dead ends: 3570 [2022-11-18 20:20:17,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 187 SyntacticMatches, 89 SemanticMatches, 39 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=146, Invalid=721, Unknown=47, NotChecked=726, Total=1640 [2022-11-18 20:20:17,225 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 1798 mSDsluCounter, 10432 mSDsCounter, 0 mSdLazyCounter, 7020 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 11587 SdHoareTripleChecker+Invalid, 14041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 7020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6988 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:17,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 11587 Invalid, 14041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 7020 Invalid, 0 Unknown, 6988 Unchecked, 25.2s Time] [2022-11-18 20:20:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2022-11-18 20:20:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2009. [2022-11-18 20:20:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1458 states have (on average 1.799039780521262) internal successors, (2623), 1966 states have internal predecessors, (2623), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-18 20:20:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2694 transitions. [2022-11-18 20:20:17,259 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2694 transitions. Word has length 141 [2022-11-18 20:20:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:17,260 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2694 transitions. [2022-11-18 20:20:17,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 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) [2022-11-18 20:20:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2694 transitions. [2022-11-18 20:20:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:20:17,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:17,261 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:17,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:17,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:20:17,674 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-18 20:20:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1472678911, now seen corresponding path program 1 times [2022-11-18 20:20:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:20:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590030938] [2022-11-18 20:20:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:17,676 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 [2022-11-18 20:20:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:20:17,678 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:20:17,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 20:20:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-18 20:20:19,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:19,417 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 [2022-11-18 20:20:19,836 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 [2022-11-18 20:20:19,938 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:20:19,938 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 [2022-11-18 20:20:20,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:20:20,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:20:20,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 20:20:20,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 20:20:24,822 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10074 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_10074))) (exists ((v_ArrVal_10073 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_10073))) (exists ((v_arrayElimCell_134 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_134) (_ bv44 32)))) is different from true [2022-11-18 20:20:24,916 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:20:24,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:20:24,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:20:25,215 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:20:25,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:20:25,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:20:25,467 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:20:25,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:20:25,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:20:25,731 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:20:25,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:20:25,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:20:25,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 20:20:25,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 20:20:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-18 20:20:25,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:26,281 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-18 20:20:26,335 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2022-11-18 20:20:26,514 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10078))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10077) .cse0 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10077) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2022-11-18 20:20:26,685 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10077) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10078))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10077) .cse3 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2022-11-18 20:20:27,232 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10075))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_10078))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10076) .cse0 v_ArrVal_10077) .cse1 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10075))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10076) .cse6 v_ArrVal_10077) (select (select (store .cse7 .cse6 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10079))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2022-11-18 20:20:28,050 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10075))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10076) .cse2 v_ArrVal_10077) (select (select (store .cse3 .cse2 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_10079))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10075))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_10078))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10076) .cse5 v_ArrVal_10077) .cse6 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2022-11-18 20:20:30,503 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10171 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10172 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10171))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_10075))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_10078))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10172) .cse0 v_ArrVal_10076) .cse1 v_ArrVal_10077) .cse2 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10171 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10172 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10171))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_10075))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10172) .cse8 v_ArrVal_10076) .cse9 v_ArrVal_10077) (select (select (store .cse10 .cse9 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10079))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2022-11-18 20:20:30,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:20:30,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590030938] [2022-11-18 20:20:30,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590030938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1117750510] [2022-11-18 20:20:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:30,529 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:20:30,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:20:30,530 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:20:30,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ccf0281-a2a3-443c-af99-71a7d6cdfee0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process