./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:31:48,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:31:48,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:31:48,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:31:48,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:31:48,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:31:48,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:31:48,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:31:48,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:31:48,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:31:48,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:31:48,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:31:48,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:31:48,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:31:48,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:31:48,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:31:48,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:31:48,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:31:48,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:31:48,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:31:48,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:31:48,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:31:48,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:31:48,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:31:48,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:31:48,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:31:48,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:31:48,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:31:48,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:31:48,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:31:48,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:31:48,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:31:48,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:31:48,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:31:48,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:31:48,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:31:48,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:31:48,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:31:48,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:31:48,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:31:48,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:31:48,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 20:31:48,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:31:48,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:31:48,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:31:48,147 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:31:48,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:31:48,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:31:48,148 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:31:48,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:31:48,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:31:48,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:31:48,149 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:31:48,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:31:48,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:31:48,150 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:31:48,150 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:31:48,151 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:31:48,151 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:31:48,151 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:31:48,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:31:48,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:31:48,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:31:48,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:31:48,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:31:48,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:31:48,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:31:48,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:31:48,154 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:31:48,154 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:31:48,154 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:31:48,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:31:48,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:31:48,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:31:48,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:31:48,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:31:48,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:31:48,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:31:48,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:31:48,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:31:48,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:31:48,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:31:48,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:31:48,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:31:48,157 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-11-25 20:31:48,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:31:48,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:31:48,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:31:48,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:31:48,443 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:31:48,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-25 20:31:48,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/c7459932d/4db83dafd43f483cad664974204ee7d4/FLAGe094b2eac [2021-11-25 20:31:49,102 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:31:49,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-25 20:31:49,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/c7459932d/4db83dafd43f483cad664974204ee7d4/FLAGe094b2eac [2021-11-25 20:31:49,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/c7459932d/4db83dafd43f483cad664974204ee7d4 [2021-11-25 20:31:49,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:31:49,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:31:49,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:31:49,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:31:49,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:31:49,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:31:49" (1/1) ... [2021-11-25 20:31:49,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7c1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:49, skipping insertion in model container [2021-11-25 20:31:49,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:31:49" (1/1) ... [2021-11-25 20:31:49,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:31:49,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:31:50,092 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-25 20:31:50,108 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-25 20:31:50,245 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-25 20:31:50,254 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-25 20:31:50,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:31:50,293 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-25 20:31:50,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c71e7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:50, skipping insertion in model container [2021-11-25 20:31:50,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:31:50,297 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 20:31:50,300 INFO L158 Benchmark]: Toolchain (without parser) took 963.28ms. Allocated memory is still 115.3MB. Free memory was 81.8MB in the beginning and 75.5MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:31:50,301 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 115.3MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:31:50,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 960.49ms. Allocated memory is still 115.3MB. Free memory was 81.5MB in the beginning and 75.9MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:31:50,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 115.3MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 960.49ms. Allocated memory is still 115.3MB. Free memory was 81.5MB in the beginning and 75.9MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. 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 where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:31:52,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:31:52,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:31:52,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:31:52,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:31:52,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:31:52,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:31:52,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:31:52,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:31:52,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:31:52,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:31:52,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:31:52,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:31:52,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:31:52,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:31:52,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:31:52,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:31:52,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:31:52,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:31:52,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:31:52,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:31:52,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:31:52,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:31:52,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:31:52,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:31:52,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:31:52,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:31:52,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:31:52,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:31:52,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:31:52,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:31:52,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:31:52,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:31:52,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:31:52,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:31:52,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:31:52,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:31:52,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:31:52,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:31:52,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:31:52,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:31:52,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 20:31:52,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:31:52,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:31:52,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:31:52,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:31:52,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:31:52,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:31:52,698 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:31:52,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:31:52,698 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:31:52,698 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:31:52,699 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:31:52,700 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:31:52,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:31:52,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:31:52,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:31:52,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:31:52,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:31:52,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:31:52,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:31:52,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:31:52,703 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:31:52,703 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:31:52,703 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:31:52,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:31:52,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:31:52,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 20:31:52,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 20:31:52,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:31:52,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:31:52,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:31:52,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 20:31:52,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:31:52,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:31:52,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:31:52,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:31:52,707 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 20:31:52,707 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 20:31:52,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:31:52,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:31:52,708 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-11-25 20:31:53,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:31:53,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:31:53,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:31:53,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:31:53,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:31:53,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-25 20:31:53,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/5086016ab/a1a3829361be4aa1ab44546e8f8e809f/FLAGb1d46eff9 [2021-11-25 20:31:53,945 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:31:53,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-25 20:31:53,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/5086016ab/a1a3829361be4aa1ab44546e8f8e809f/FLAGb1d46eff9 [2021-11-25 20:31:54,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/data/5086016ab/a1a3829361be4aa1ab44546e8f8e809f [2021-11-25 20:31:54,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:31:54,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:31:54,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:31:54,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:31:54,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:31:54,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:31:54" (1/1) ... [2021-11-25 20:31:54,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9701aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:54, skipping insertion in model container [2021-11-25 20:31:54,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:31:54" (1/1) ... [2021-11-25 20:31:54,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:31:54,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:31:54,848 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-25 20:31:54,859 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-25 20:31:55,024 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-25 20:31:55,027 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-25 20:31:55,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:31:55,062 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 20:31:55,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:31:55,094 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-25 20:31:55,096 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-25 20:31:55,190 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-25 20:31:55,191 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-25 20:31:55,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:31:55,215 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:31:55,275 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-25 20:31:55,278 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-25 20:31:55,335 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-25 20:31:55,352 WARN L230 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_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-25 20:31:55,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:31:55,454 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:31:55,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55 WrapperNode [2021-11-25 20:31:55,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:31:55,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:31:55,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:31:55,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:31:55,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,636 INFO L137 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1204 [2021-11-25 20:31:55,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:31:55,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:31:55,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:31:55,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:31:55,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:31:55,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:31:55,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:31:55,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:31:55,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (1/1) ... [2021-11-25 20:31:55,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:31:55,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:31:55,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:31:55,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:31:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 20:31:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 20:31:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:31:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 20:31:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:31:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:31:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 20:31:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:31:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-25 20:31:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-25 20:31:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:31:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:31:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:31:55,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:31:55,850 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-25 20:31:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-25 20:31:55,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:31:55,850 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-25 20:31:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-25 20:31:55,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:31:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:31:56,211 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:31:56,212 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:32:00,900 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:32:00,915 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:32:00,916 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-25 20:32:00,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:00 BoogieIcfgContainer [2021-11-25 20:32:00,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:32:00,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:32:00,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:32:00,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:32:00,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:31:54" (1/3) ... [2021-11-25 20:32:00,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236b7b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:00, skipping insertion in model container [2021-11-25 20:32:00,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:31:55" (2/3) ... [2021-11-25 20:32:00,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236b7b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:00, skipping insertion in model container [2021-11-25 20:32:00,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:00" (3/3) ... [2021-11-25 20:32:00,927 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2021-11-25 20:32:00,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:32:00,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2021-11-25 20:32:00,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:32:00,983 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:32:00,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2021-11-25 20:32:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 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) [2021-11-25 20:32:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 20:32:01,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:01,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 20:32:01,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2021-11-25 20:32:01,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:01,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601291942] [2021-11-25 20:32:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:01,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:01,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:01,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:32:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:32:01,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:01,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:01,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:01,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601291942] [2021-11-25 20:32:01,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601291942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:01,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:01,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:32:01,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650763993] [2021-11-25 20:32:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:01,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:01,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:01,381 INFO L87 Difference]: Start difference. First operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 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) [2021-11-25 20:32:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:03,894 INFO L93 Difference]: Finished difference Result 1537 states and 1627 transitions. [2021-11-25 20:32:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:03,897 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 [2021-11-25 20:32:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:03,920 INFO L225 Difference]: With dead ends: 1537 [2021-11-25 20:32:03,920 INFO L226 Difference]: Without dead ends: 1535 [2021-11-25 20:32:03,922 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:03,925 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 906 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:03,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 1258 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 20:32:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-25 20:32:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1300. [2021-11-25 20:32:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 660 states have (on average 2.106060606060606) internal successors, (1390), 1281 states have internal predecessors, (1390), 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) [2021-11-25 20:32:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1420 transitions. [2021-11-25 20:32:04,057 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1420 transitions. Word has length 3 [2021-11-25 20:32:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:04,058 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1420 transitions. [2021-11-25 20:32:04,058 INFO L471 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) [2021-11-25 20:32:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1420 transitions. [2021-11-25 20:32:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 20:32:04,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:04,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 20:32:04,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:04,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:04,275 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2021-11-25 20:32:04,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:04,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508950346] [2021-11-25 20:32:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:04,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:04,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:04,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:04,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:32:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:04,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:32:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:04,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:04,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:04,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:04,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508950346] [2021-11-25 20:32:04,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508950346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:04,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:04,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:32:04,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433860878] [2021-11-25 20:32:04,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:04,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:04,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:04,447 INFO L87 Difference]: Start difference. First operand 1300 states and 1420 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) [2021-11-25 20:32:08,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:08,050 INFO L93 Difference]: Finished difference Result 1891 states and 2058 transitions. [2021-11-25 20:32:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:08,050 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 [2021-11-25 20:32:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:08,061 INFO L225 Difference]: With dead ends: 1891 [2021-11-25 20:32:08,061 INFO L226 Difference]: Without dead ends: 1891 [2021-11-25 20:32:08,062 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:08,063 INFO L933 BasicCegarLoop]: 1055 mSDtfsCounter, 624 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:08,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 1758 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 20:32:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-11-25 20:32:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1504. [2021-11-25 20:32:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 863 states have (on average 2.0880648899188876) internal successors, (1802), 1483 states have internal predecessors, (1802), 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) [2021-11-25 20:32:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1836 transitions. [2021-11-25 20:32:08,105 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1836 transitions. Word has length 3 [2021-11-25 20:32:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:08,106 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 1836 transitions. [2021-11-25 20:32:08,106 INFO L471 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) [2021-11-25 20:32:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1836 transitions. [2021-11-25 20:32:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 20:32:08,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:08,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:08,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:08,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:08,318 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2021-11-25 20:32:08,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:08,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141439174] [2021-11-25 20:32:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:08,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:08,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:08,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 20:32:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:08,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:32:08,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:08,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:08,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:08,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:32:08,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:08,672 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:32:08,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 18 [2021-11-25 20:32:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:08,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:08,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:08,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141439174] [2021-11-25 20:32:08,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141439174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:08,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:08,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:08,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647252538] [2021-11-25 20:32:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:08,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:08,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:08,709 INFO L87 Difference]: Start difference. First operand 1504 states and 1836 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) [2021-11-25 20:32:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:13,749 INFO L93 Difference]: Finished difference Result 2569 states and 2979 transitions. [2021-11-25 20:32:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:32:13,749 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 [2021-11-25 20:32:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:13,763 INFO L225 Difference]: With dead ends: 2569 [2021-11-25 20:32:13,763 INFO L226 Difference]: Without dead ends: 2569 [2021-11-25 20:32:13,764 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:13,765 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 2002 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:13,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 1477 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 20:32:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-11-25 20:32:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1649. [2021-11-25 20:32:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1008 states have (on average 2.068452380952381) internal successors, (2085), 1628 states have internal predecessors, (2085), 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) [2021-11-25 20:32:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2119 transitions. [2021-11-25 20:32:13,810 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2119 transitions. Word has length 8 [2021-11-25 20:32:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:13,811 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2119 transitions. [2021-11-25 20:32:13,811 INFO L471 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) [2021-11-25 20:32:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2119 transitions. [2021-11-25 20:32:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:32:13,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:13,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:13,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:14,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:14,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2021-11-25 20:32:14,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923330887] [2021-11-25 20:32:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:14,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:14,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:14,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:14,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 20:32:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:14,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:32:14,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:14,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:14,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:14,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:14,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923330887] [2021-11-25 20:32:14,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923330887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:14,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:14,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:14,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067788789] [2021-11-25 20:32:14,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:14,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:14,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:14,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:14,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:14,213 INFO L87 Difference]: Start difference. First operand 1649 states and 2119 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) [2021-11-25 20:32:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:17,775 INFO L93 Difference]: Finished difference Result 2811 states and 3512 transitions. [2021-11-25 20:32:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:32:17,776 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 [2021-11-25 20:32:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:17,790 INFO L225 Difference]: With dead ends: 2811 [2021-11-25 20:32:17,790 INFO L226 Difference]: Without dead ends: 2811 [2021-11-25 20:32:17,790 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:17,791 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 2333 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:17,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2339 Valid, 2579 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 20:32:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-25 20:32:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1604. [2021-11-25 20:32:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1008 states have (on average 2.009920634920635) internal successors, (2026), 1583 states have internal predecessors, (2026), 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) [2021-11-25 20:32:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2060 transitions. [2021-11-25 20:32:17,866 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2060 transitions. Word has length 9 [2021-11-25 20:32:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:17,867 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 2060 transitions. [2021-11-25 20:32:17,867 INFO L471 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) [2021-11-25 20:32:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2060 transitions. [2021-11-25 20:32:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:32:17,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:17,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:17,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-25 20:32:18,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:18,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:18,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2021-11-25 20:32:18,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:18,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560438939] [2021-11-25 20:32:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:18,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:18,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:18,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:18,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 20:32:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:18,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:32:18,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:18,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:18,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:18,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:18,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560438939] [2021-11-25 20:32:18,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560438939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:18,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:18,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:18,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475175214] [2021-11-25 20:32:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:18,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:18,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:18,295 INFO L87 Difference]: Start difference. First operand 1604 states and 2060 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) [2021-11-25 20:32:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:22,286 INFO L93 Difference]: Finished difference Result 2440 states and 3105 transitions. [2021-11-25 20:32:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:32:22,287 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 [2021-11-25 20:32:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:22,299 INFO L225 Difference]: With dead ends: 2440 [2021-11-25 20:32:22,299 INFO L226 Difference]: Without dead ends: 2440 [2021-11-25 20:32:22,300 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:22,301 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 1581 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:22,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 2720 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:32:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-11-25 20:32:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1594. [2021-11-25 20:32:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1008 states have (on average 1.9861111111111112) internal successors, (2002), 1573 states have internal predecessors, (2002), 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) [2021-11-25 20:32:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2036 transitions. [2021-11-25 20:32:22,344 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2036 transitions. Word has length 9 [2021-11-25 20:32:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:22,344 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 2036 transitions. [2021-11-25 20:32:22,344 INFO L471 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) [2021-11-25 20:32:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2036 transitions. [2021-11-25 20:32:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:32:22,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:22,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:22,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:22,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:22,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:22,557 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2021-11-25 20:32:22,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:22,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897469706] [2021-11-25 20:32:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:22,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:22,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:22,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:22,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 20:32:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:22,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:32:22,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:22,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:22,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897469706] [2021-11-25 20:32:22,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897469706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:22,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:22,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:22,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005644377] [2021-11-25 20:32:22,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:22,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:22,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:22,787 INFO L87 Difference]: Start difference. First operand 1594 states and 2036 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) [2021-11-25 20:32:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:23,614 INFO L93 Difference]: Finished difference Result 2264 states and 2809 transitions. [2021-11-25 20:32:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:32:23,615 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 [2021-11-25 20:32:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:23,624 INFO L225 Difference]: With dead ends: 2264 [2021-11-25 20:32:23,624 INFO L226 Difference]: Without dead ends: 2264 [2021-11-25 20:32:23,624 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:23,625 INFO L933 BasicCegarLoop]: 1454 mSDtfsCounter, 748 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:23,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 3873 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:32:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-11-25 20:32:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1852. [2021-11-25 20:32:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1263 states have (on average 1.990498812351544) internal successors, (2514), 1828 states have internal predecessors, (2514), 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) [2021-11-25 20:32:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2554 transitions. [2021-11-25 20:32:23,673 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2554 transitions. Word has length 11 [2021-11-25 20:32:23,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:23,674 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 2554 transitions. [2021-11-25 20:32:23,674 INFO L471 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) [2021-11-25 20:32:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2554 transitions. [2021-11-25 20:32:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 20:32:23,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:23,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:23,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:23,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:23,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2126591358, now seen corresponding path program 1 times [2021-11-25 20:32:23,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:23,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538589965] [2021-11-25 20:32:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:23,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:23,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:23,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 20:32:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:24,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:32:24,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:24,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:32:24,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:32:24,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:32:24,125 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-25 20:32:24,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-25 20:32:24,189 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-25 20:32:24,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 23 [2021-11-25 20:32:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:24,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:24,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:24,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538589965] [2021-11-25 20:32:24,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538589965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:24,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:24,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:24,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810715094] [2021-11-25 20:32:24,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:24,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:24,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:24,225 INFO L87 Difference]: Start difference. First operand 1852 states and 2554 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) [2021-11-25 20:32:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:25,664 INFO L93 Difference]: Finished difference Result 2000 states and 2409 transitions. [2021-11-25 20:32:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:32:25,665 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 [2021-11-25 20:32:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:25,673 INFO L225 Difference]: With dead ends: 2000 [2021-11-25 20:32:25,673 INFO L226 Difference]: Without dead ends: 2000 [2021-11-25 20:32:25,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:32:25,674 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 501 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:25,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 3873 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:32:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2021-11-25 20:32:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1494. [2021-11-25 20:32:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 907 states have (on average 1.9757442116868797) internal successors, (1792), 1472 states have internal predecessors, (1792), 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) [2021-11-25 20:32:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1828 transitions. [2021-11-25 20:32:25,740 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1828 transitions. Word has length 14 [2021-11-25 20:32:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:25,740 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1828 transitions. [2021-11-25 20:32:25,740 INFO L471 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) [2021-11-25 20:32:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1828 transitions. [2021-11-25 20:32:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:32:25,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:25,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:25,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-25 20:32:25,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:25,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:25,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2021-11-25 20:32:25,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:25,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042141302] [2021-11-25 20:32:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:25,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:25,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:25,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:25,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 20:32:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:26,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:32:26,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:26,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:26,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:26,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042141302] [2021-11-25 20:32:26,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042141302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:26,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:26,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:26,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594807423] [2021-11-25 20:32:26,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:26,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:26,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:26,209 INFO L87 Difference]: Start difference. First operand 1494 states and 1828 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) [2021-11-25 20:32:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:26,240 INFO L93 Difference]: Finished difference Result 1434 states and 1742 transitions. [2021-11-25 20:32:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:26,241 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 [2021-11-25 20:32:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:26,249 INFO L225 Difference]: With dead ends: 1434 [2021-11-25 20:32:26,249 INFO L226 Difference]: Without dead ends: 1434 [2021-11-25 20:32:26,250 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:26,250 INFO L933 BasicCegarLoop]: 1239 mSDtfsCounter, 1165 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1308 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 [2021-11-25 20:32:26,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1308 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:32:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-11-25 20:32:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1434. [2021-11-25 20:32:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 871 states have (on average 1.9586681974741675) internal successors, (1706), 1412 states have internal predecessors, (1706), 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) [2021-11-25 20:32:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1742 transitions. [2021-11-25 20:32:26,293 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1742 transitions. Word has length 19 [2021-11-25 20:32:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:26,293 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 1742 transitions. [2021-11-25 20:32:26,294 INFO L471 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) [2021-11-25 20:32:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1742 transitions. [2021-11-25 20:32:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:32:26,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:26,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:26,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:26,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:26,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2021-11-25 20:32:26,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:26,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615655067] [2021-11-25 20:32:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:26,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:26,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:26,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 20:32:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:26,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:32:26,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:26,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:26,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615655067] [2021-11-25 20:32:26,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615655067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:26,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:26,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:26,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849244913] [2021-11-25 20:32:26,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:26,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:26,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:26,753 INFO L87 Difference]: Start difference. First operand 1434 states and 1742 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) [2021-11-25 20:32:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:26,823 INFO L93 Difference]: Finished difference Result 1406 states and 1686 transitions. [2021-11-25 20:32:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:32:26,824 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 [2021-11-25 20:32:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:26,832 INFO L225 Difference]: With dead ends: 1406 [2021-11-25 20:32:26,832 INFO L226 Difference]: Without dead ends: 1406 [2021-11-25 20:32:26,832 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:26,835 INFO L933 BasicCegarLoop]: 1194 mSDtfsCounter, 1136 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:26,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 2450 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:32:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-11-25 20:32:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1404. [2021-11-25 20:32:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 855 states have (on average 1.9274853801169591) internal successors, (1648), 1382 states have internal predecessors, (1648), 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) [2021-11-25 20:32:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1684 transitions. [2021-11-25 20:32:26,866 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1684 transitions. Word has length 21 [2021-11-25 20:32:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:26,866 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 1684 transitions. [2021-11-25 20:32:26,866 INFO L471 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) [2021-11-25 20:32:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1684 transitions. [2021-11-25 20:32:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 20:32:26,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:26,868 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:26,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:27,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:27,080 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2021-11-25 20:32:27,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:27,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287644577] [2021-11-25 20:32:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:27,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:27,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:27,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:27,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 20:32:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:27,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:32:27,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:27,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:27,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:27,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:27,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287644577] [2021-11-25 20:32:27,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287644577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:27,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:27,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:27,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373405144] [2021-11-25 20:32:27,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:27,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:32:27,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:27,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:32:27,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:32:27,428 INFO L87 Difference]: Start difference. First operand 1404 states and 1684 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) [2021-11-25 20:32:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:31,064 INFO L93 Difference]: Finished difference Result 2572 states and 3080 transitions. [2021-11-25 20:32:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:32:31,065 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 [2021-11-25 20:32:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:31,075 INFO L225 Difference]: With dead ends: 2572 [2021-11-25 20:32:31,075 INFO L226 Difference]: Without dead ends: 2572 [2021-11-25 20:32:31,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:32:31,076 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 2421 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:31,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2424 Valid, 2737 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 20:32:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-11-25 20:32:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1400. [2021-11-25 20:32:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 855 states have (on average 1.9181286549707601) internal successors, (1640), 1378 states have internal predecessors, (1640), 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) [2021-11-25 20:32:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1676 transitions. [2021-11-25 20:32:31,109 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1676 transitions. Word has length 35 [2021-11-25 20:32:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 1676 transitions. [2021-11-25 20:32:31,110 INFO L471 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) [2021-11-25 20:32:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1676 transitions. [2021-11-25 20:32:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 20:32:31,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:31,112 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:31,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:31,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:31,323 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2021-11-25 20:32:31,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366019575] [2021-11-25 20:32:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:31,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:31,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:31,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:31,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 20:32:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:32:31,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:31,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:31,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:31,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:31,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366019575] [2021-11-25 20:32:31,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366019575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:31,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:31,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:31,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570371752] [2021-11-25 20:32:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:31,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:32:31,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:32:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:32:31,793 INFO L87 Difference]: Start difference. First operand 1400 states and 1676 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) [2021-11-25 20:32:36,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:36,228 INFO L93 Difference]: Finished difference Result 2214 states and 2659 transitions. [2021-11-25 20:32:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:32:36,231 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 [2021-11-25 20:32:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:36,243 INFO L225 Difference]: With dead ends: 2214 [2021-11-25 20:32:36,243 INFO L226 Difference]: Without dead ends: 2214 [2021-11-25 20:32:36,244 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:36,244 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 2194 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:36,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 3317 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 20:32:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-11-25 20:32:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1396. [2021-11-25 20:32:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 855 states have (on average 1.9087719298245613) internal successors, (1632), 1374 states have internal predecessors, (1632), 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) [2021-11-25 20:32:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1668 transitions. [2021-11-25 20:32:36,275 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1668 transitions. Word has length 35 [2021-11-25 20:32:36,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:36,275 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1668 transitions. [2021-11-25 20:32:36,275 INFO L471 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) [2021-11-25 20:32:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1668 transitions. [2021-11-25 20:32:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 20:32:36,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:36,278 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:36,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:36,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:36,490 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2063645645, now seen corresponding path program 1 times [2021-11-25 20:32:36,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:36,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465632484] [2021-11-25 20:32:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:36,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:36,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:36,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 20:32:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:36,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:32:36,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:36,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:36,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:36,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465632484] [2021-11-25 20:32:36,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465632484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:36,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:36,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:36,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842239124] [2021-11-25 20:32:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:36,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:32:36,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:32:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:32:36,899 INFO L87 Difference]: Start difference. First operand 1396 states and 1668 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) [2021-11-25 20:32:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:36,962 INFO L93 Difference]: Finished difference Result 1384 states and 1648 transitions. [2021-11-25 20:32:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:32:36,963 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 [2021-11-25 20:32:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:36,970 INFO L225 Difference]: With dead ends: 1384 [2021-11-25 20:32:36,970 INFO L226 Difference]: Without dead ends: 1384 [2021-11-25 20:32:36,971 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:36,971 INFO L933 BasicCegarLoop]: 1188 mSDtfsCounter, 1112 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:36,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 2428 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:32:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-11-25 20:32:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2021-11-25 20:32:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 843 states have (on average 1.9122182680901543) internal successors, (1612), 1362 states have internal predecessors, (1612), 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) [2021-11-25 20:32:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1648 transitions. [2021-11-25 20:32:37,007 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1648 transitions. Word has length 54 [2021-11-25 20:32:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:37,010 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 1648 transitions. [2021-11-25 20:32:37,010 INFO L471 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) [2021-11-25 20:32:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1648 transitions. [2021-11-25 20:32:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 20:32:37,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:37,015 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:37,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:37,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:37,228 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -202859289, now seen corresponding path program 1 times [2021-11-25 20:32:37,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661076240] [2021-11-25 20:32:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:37,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:37,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:37,231 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:37,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 20:32:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:37,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:32:37,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:37,667 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:32:37,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 25 [2021-11-25 20:32:37,802 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 20:32:37,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 28 [2021-11-25 20:32:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:39,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:39,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:39,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661076240] [2021-11-25 20:32:39,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661076240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:39,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:39,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:39,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126803468] [2021-11-25 20:32:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:39,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:39,419 INFO L87 Difference]: Start difference. First operand 1384 states and 1648 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) [2021-11-25 20:32:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:39,574 INFO L93 Difference]: Finished difference Result 1394 states and 1661 transitions. [2021-11-25 20:32:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:32:39,575 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 [2021-11-25 20:32:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:39,591 INFO L225 Difference]: With dead ends: 1394 [2021-11-25 20:32:39,592 INFO L226 Difference]: Without dead ends: 1394 [2021-11-25 20:32:39,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:39,594 INFO L933 BasicCegarLoop]: 1170 mSDtfsCounter, 61 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 568 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:39,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 2495 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 568 Unchecked, 0.1s Time] [2021-11-25 20:32:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-25 20:32:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1389. [2021-11-25 20:32:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 847 states have (on average 1.9090909090909092) internal successors, (1617), 1366 states have internal predecessors, (1617), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:32:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1655 transitions. [2021-11-25 20:32:39,623 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1655 transitions. Word has length 62 [2021-11-25 20:32:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:39,623 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1655 transitions. [2021-11-25 20:32:39,624 INFO L471 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) [2021-11-25 20:32:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1655 transitions. [2021-11-25 20:32:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 20:32:39,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:39,628 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:39,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:39,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:39,842 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash -202859288, now seen corresponding path program 1 times [2021-11-25 20:32:39,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:39,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933766848] [2021-11-25 20:32:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:39,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:39,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:39,844 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:39,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 20:32:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:40,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 20:32:40,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:40,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:32:40,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:40,375 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:32:40,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:41,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:41,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:41,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933766848] [2021-11-25 20:32:41,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933766848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:41,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:41,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:32:41,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310160234] [2021-11-25 20:32:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:41,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:41,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:41,159 INFO L87 Difference]: Start difference. First operand 1389 states and 1655 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) [2021-11-25 20:32:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:45,097 INFO L93 Difference]: Finished difference Result 1390 states and 1655 transitions. [2021-11-25 20:32:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:32:45,097 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 [2021-11-25 20:32:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:45,102 INFO L225 Difference]: With dead ends: 1390 [2021-11-25 20:32:45,103 INFO L226 Difference]: Without dead ends: 1390 [2021-11-25 20:32:45,103 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:45,104 INFO L933 BasicCegarLoop]: 1170 mSDtfsCounter, 111 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:45,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 3016 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:32:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-25 20:32:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1389. [2021-11-25 20:32:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 847 states have (on average 1.9079102715466352) internal successors, (1616), 1366 states have internal predecessors, (1616), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:32:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1654 transitions. [2021-11-25 20:32:45,127 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1654 transitions. Word has length 62 [2021-11-25 20:32:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:45,128 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1654 transitions. [2021-11-25 20:32:45,128 INFO L471 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) [2021-11-25 20:32:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1654 transitions. [2021-11-25 20:32:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 20:32:45,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:45,129 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:45,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:45,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:45,344 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:45,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1136013504, now seen corresponding path program 1 times [2021-11-25 20:32:45,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:45,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165842251] [2021-11-25 20:32:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:45,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:45,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:45,346 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:45,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 20:32:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:45,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:32:45,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:45,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:45,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165842251] [2021-11-25 20:32:45,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165842251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:45,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:45,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:32:45,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492679344] [2021-11-25 20:32:45,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:45,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:45,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:45,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:45,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:45,775 INFO L87 Difference]: Start difference. First operand 1389 states and 1654 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) [2021-11-25 20:32:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:45,925 INFO L93 Difference]: Finished difference Result 1403 states and 1668 transitions. [2021-11-25 20:32:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:32:45,926 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 [2021-11-25 20:32:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:45,941 INFO L225 Difference]: With dead ends: 1403 [2021-11-25 20:32:45,941 INFO L226 Difference]: Without dead ends: 1403 [2021-11-25 20:32:45,941 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:32:45,944 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 19 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:45,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5921 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:32:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-11-25 20:32:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2021-11-25 20:32:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 856 states have (on average 1.9018691588785046) internal successors, (1628), 1376 states have internal predecessors, (1628), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-25 20:32:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1668 transitions. [2021-11-25 20:32:45,978 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1668 transitions. Word has length 68 [2021-11-25 20:32:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:45,979 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1668 transitions. [2021-11-25 20:32:45,979 INFO L471 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) [2021-11-25 20:32:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1668 transitions. [2021-11-25 20:32:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 20:32:45,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:45,980 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:45,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:46,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:46,202 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:46,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1078181117, now seen corresponding path program 1 times [2021-11-25 20:32:46,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509419524] [2021-11-25 20:32:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:46,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:46,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:46,205 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:46,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 20:32:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:46,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:32:46,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:46,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:46,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:46,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509419524] [2021-11-25 20:32:46,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509419524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:46,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:46,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:32:46,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369195185] [2021-11-25 20:32:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:46,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:46,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:46,725 INFO L87 Difference]: Start difference. First operand 1401 states and 1668 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) [2021-11-25 20:32:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:46,898 INFO L93 Difference]: Finished difference Result 1407 states and 1675 transitions. [2021-11-25 20:32:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:32:46,898 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 [2021-11-25 20:32:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:46,902 INFO L225 Difference]: With dead ends: 1407 [2021-11-25 20:32:46,902 INFO L226 Difference]: Without dead ends: 1407 [2021-11-25 20:32:46,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:32:46,903 INFO L933 BasicCegarLoop]: 1185 mSDtfsCounter, 23 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:46,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 4635 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:32:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2021-11-25 20:32:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1404. [2021-11-25 20:32:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 858 states have (on average 1.8997668997668997) internal successors, (1630), 1378 states have internal predecessors, (1630), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-25 20:32:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1671 transitions. [2021-11-25 20:32:46,930 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1671 transitions. Word has length 68 [2021-11-25 20:32:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:46,930 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 1671 transitions. [2021-11-25 20:32:46,931 INFO L471 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) [2021-11-25 20:32:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1671 transitions. [2021-11-25 20:32:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 20:32:46,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:46,932 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:46,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:47,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:47,146 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:47,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash 396897840, now seen corresponding path program 1 times [2021-11-25 20:32:47,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69958525] [2021-11-25 20:32:47,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:47,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:47,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:47,149 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:47,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 20:32:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:47,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:32:47,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:47,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:47,791 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 20:32:47,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-25 20:32:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:47,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:47,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69958525] [2021-11-25 20:32:47,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69958525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:47,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:47,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:32:47,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357862318] [2021-11-25 20:32:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:47,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:47,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:47,811 INFO L87 Difference]: Start difference. First operand 1404 states and 1671 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) [2021-11-25 20:32:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:51,901 INFO L93 Difference]: Finished difference Result 2560 states and 3059 transitions. [2021-11-25 20:32:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:32:51,902 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 [2021-11-25 20:32:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:51,906 INFO L225 Difference]: With dead ends: 2560 [2021-11-25 20:32:51,906 INFO L226 Difference]: Without dead ends: 2560 [2021-11-25 20:32:51,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:32:51,907 INFO L933 BasicCegarLoop]: 1114 mSDtfsCounter, 1622 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 945 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:51,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 3997 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2727 Invalid, 0 Unknown, 945 Unchecked, 4.0s Time] [2021-11-25 20:32:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-11-25 20:32:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1403. [2021-11-25 20:32:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 858 states have (on average 1.8986013986013985) internal successors, (1629), 1377 states have internal predecessors, (1629), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-25 20:32:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1670 transitions. [2021-11-25 20:32:51,953 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1670 transitions. Word has length 73 [2021-11-25 20:32:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:51,954 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1670 transitions. [2021-11-25 20:32:51,954 INFO L471 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) [2021-11-25 20:32:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1670 transitions. [2021-11-25 20:32:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 20:32:51,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:51,955 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:51,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:52,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:52,170 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash 396897841, now seen corresponding path program 1 times [2021-11-25 20:32:52,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:52,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642162482] [2021-11-25 20:32:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:52,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:52,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:52,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:52,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 20:32:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:52,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 20:32:52,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:52,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:52,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:53,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:32:53,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:32:53,246 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:32:53,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 20:32:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:53,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:53,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:32:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642162482] [2021-11-25 20:32:53,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642162482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:53,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:53,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:32:53,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230041514] [2021-11-25 20:32:53,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:53,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:32:53,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:32:53,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:32:53,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:32:53,275 INFO L87 Difference]: Start difference. First operand 1403 states and 1670 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) [2021-11-25 20:32:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:59,711 INFO L93 Difference]: Finished difference Result 2630 states and 3192 transitions. [2021-11-25 20:32:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:32:59,720 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 [2021-11-25 20:32:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:59,724 INFO L225 Difference]: With dead ends: 2630 [2021-11-25 20:32:59,725 INFO L226 Difference]: Without dead ends: 2630 [2021-11-25 20:32:59,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:32:59,726 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 2395 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 5029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1309 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:59,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 3459 Invalid, 5029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3685 Invalid, 0 Unknown, 1309 Unchecked, 6.4s Time] [2021-11-25 20:32:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-11-25 20:32:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 1397. [2021-11-25 20:32:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 860 states have (on average 1.8872093023255814) internal successors, (1623), 1371 states have internal predecessors, (1623), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-25 20:32:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1664 transitions. [2021-11-25 20:32:59,758 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1664 transitions. Word has length 73 [2021-11-25 20:32:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:59,758 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 1664 transitions. [2021-11-25 20:32:59,759 INFO L471 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) [2021-11-25 20:32:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1664 transitions. [2021-11-25 20:32:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 20:32:59,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:59,760 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:32:59,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:59,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:32:59,978 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:32:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1622258381, now seen corresponding path program 1 times [2021-11-25 20:32:59,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:32:59,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469750776] [2021-11-25 20:32:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:59,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:32:59,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:32:59,980 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:32:59,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-25 20:33:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:00,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:33:00,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:00,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:00,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:00,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 15 [2021-11-25 20:33:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:00,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:33:00,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:33:00,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469750776] [2021-11-25 20:33:00,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469750776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:00,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:00,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:33:00,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707657775] [2021-11-25 20:33:00,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:00,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:33:00,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:33:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:33:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:33:00,460 INFO L87 Difference]: Start difference. First operand 1397 states and 1664 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) [2021-11-25 20:33:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:04,432 INFO L93 Difference]: Finished difference Result 1405 states and 1672 transitions. [2021-11-25 20:33:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:33:04,432 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 [2021-11-25 20:33:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:04,434 INFO L225 Difference]: With dead ends: 1405 [2021-11-25 20:33:04,434 INFO L226 Difference]: Without dead ends: 1405 [2021-11-25 20:33:04,434 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:33:04,435 INFO L933 BasicCegarLoop]: 1171 mSDtfsCounter, 23 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:04,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4931 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:33:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-25 20:33:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1404. [2021-11-25 20:33:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 866 states have (on average 1.8833718244803694) internal successors, (1631), 1377 states have internal predecessors, (1631), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-25 20:33:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1672 transitions. [2021-11-25 20:33:04,456 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1672 transitions. Word has length 80 [2021-11-25 20:33:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:04,456 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 1672 transitions. [2021-11-25 20:33:04,456 INFO L471 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) [2021-11-25 20:33:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1672 transitions. [2021-11-25 20:33:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 20:33:04,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:04,458 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:33:04,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-25 20:33:04,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:33:04,672 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:33:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1249597809, now seen corresponding path program 1 times [2021-11-25 20:33:04,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:33:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865911946] [2021-11-25 20:33:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:04,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:33:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:33:04,674 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:33:04,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 20:33:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:05,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 20:33:05,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:05,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:05,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:05,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:05,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:05,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:33:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:05,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:33:05,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:33:05,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865911946] [2021-11-25 20:33:05,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865911946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:05,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:05,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:33:05,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948835923] [2021-11-25 20:33:05,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:05,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:33:05,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:33:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:33:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:33:05,284 INFO L87 Difference]: Start difference. First operand 1404 states and 1672 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) [2021-11-25 20:33:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:10,892 INFO L93 Difference]: Finished difference Result 1404 states and 1671 transitions. [2021-11-25 20:33:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:33:10,892 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 [2021-11-25 20:33:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:10,894 INFO L225 Difference]: With dead ends: 1404 [2021-11-25 20:33:10,894 INFO L226 Difference]: Without dead ends: 1404 [2021-11-25 20:33:10,895 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:33:10,895 INFO L933 BasicCegarLoop]: 1166 mSDtfsCounter, 19 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5957 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:10,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5957 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-25 20:33:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-25 20:33:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1404. [2021-11-25 20:33:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 866 states have (on average 1.882217090069284) internal successors, (1630), 1377 states have internal predecessors, (1630), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-25 20:33:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1671 transitions. [2021-11-25 20:33:10,914 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1671 transitions. Word has length 81 [2021-11-25 20:33:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:10,914 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 1671 transitions. [2021-11-25 20:33:10,914 INFO L471 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) [2021-11-25 20:33:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1671 transitions. [2021-11-25 20:33:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 20:33:10,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:10,916 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:33:10,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-25 20:33:11,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:33:11,130 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:33:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -63374884, now seen corresponding path program 1 times [2021-11-25 20:33:11,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:33:11,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514615219] [2021-11-25 20:33:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:11,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:33:11,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:33:11,133 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:33:11,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 20:33:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:33:11,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:11,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:33:11,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:33:11,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514615219] [2021-11-25 20:33:11,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514615219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:11,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:11,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:33:11,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87789561] [2021-11-25 20:33:11,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:11,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:33:11,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:33:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:33:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:11,593 INFO L87 Difference]: Start difference. First operand 1404 states and 1671 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) [2021-11-25 20:33:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:11,675 INFO L93 Difference]: Finished difference Result 1412 states and 1680 transitions. [2021-11-25 20:33:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:11,675 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 [2021-11-25 20:33:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:11,678 INFO L225 Difference]: With dead ends: 1412 [2021-11-25 20:33:11,679 INFO L226 Difference]: Without dead ends: 1409 [2021-11-25 20:33:11,679 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:33:11,679 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 13 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:11,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 3514 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:33:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-11-25 20:33:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1409. [2021-11-25 20:33:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 870 states have (on average 1.8793103448275863) internal successors, (1635), 1382 states have internal predecessors, (1635), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:33:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1677 transitions. [2021-11-25 20:33:11,700 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1677 transitions. Word has length 88 [2021-11-25 20:33:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:11,700 INFO L470 AbstractCegarLoop]: Abstraction has 1409 states and 1677 transitions. [2021-11-25 20:33:11,701 INFO L471 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) [2021-11-25 20:33:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1677 transitions. [2021-11-25 20:33:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:33:11,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:11,702 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:33:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-25 20:33:11,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:33:11,916 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:33:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash -407790698, now seen corresponding path program 1 times [2021-11-25 20:33:11,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:33:11,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879353051] [2021-11-25 20:33:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:11,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:33:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:33:11,918 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:33:11,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-25 20:33:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:12,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:33:12,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:12,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:33:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:12,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:33:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879353051] [2021-11-25 20:33:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879353051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:33:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [618686222] [2021-11-25 20:33:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:12,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:33:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:33:12,731 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:33:12,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-25 20:33:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:13,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:33:13,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:13,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:33:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:13,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [618686222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:33:13,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373350804] [2021-11-25 20:33:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:13,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:33:13,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:33:13,575 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:33:13,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-25 20:33:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:13,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:33:13,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:14,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:33:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:14,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373350804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:33:14,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:33:14,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-25 20:33:14,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265759514] [2021-11-25 20:33:14,228 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:33:14,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:33:14,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:33:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:33:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:33:14,229 INFO L87 Difference]: Start difference. First operand 1409 states and 1677 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) [2021-11-25 20:33:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:14,504 INFO L93 Difference]: Finished difference Result 1422 states and 1692 transitions. [2021-11-25 20:33:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:33:14,505 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 [2021-11-25 20:33:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:14,507 INFO L225 Difference]: With dead ends: 1422 [2021-11-25 20:33:14,507 INFO L226 Difference]: Without dead ends: 1416 [2021-11-25 20:33:14,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:33:14,508 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 45 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:14,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 5863 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:33:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-11-25 20:33:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1413. [2021-11-25 20:33:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 874 states have (on average 1.8764302059496567) internal successors, (1640), 1386 states have internal predecessors, (1640), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:33:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1682 transitions. [2021-11-25 20:33:14,524 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1682 transitions. Word has length 89 [2021-11-25 20:33:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:14,524 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 1682 transitions. [2021-11-25 20:33:14,524 INFO L471 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) [2021-11-25 20:33:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1682 transitions. [2021-11-25 20:33:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 20:33:14,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:14,526 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:33:14,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-25 20:33:14,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-25 20:33:14,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-25 20:33:15,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:33:15,157 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:33:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1714460764, now seen corresponding path program 2 times [2021-11-25 20:33:15,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:33:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962601873] [2021-11-25 20:33:15,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:33:15,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:33:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:33:15,159 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:33:15,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-25 20:33:15,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:33:15,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:33:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:33:15,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:15,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:33:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:16,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:33:16,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962601873] [2021-11-25 20:33:16,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962601873] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:33:16,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1819844460] [2021-11-25 20:33:16,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:33:16,357 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:33:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:33:16,363 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:33:16,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-25 20:33:18,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:33:18,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:33:18,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:33:18,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:18,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:33:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:33:18,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1819844460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:33:18,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891949335] [2021-11-25 20:33:18,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:33:18,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:33:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:33:18,566 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:33:18,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-25 20:34:33,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:34:33,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:34:33,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 20:34:33,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:33,449 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:34:33,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2021-11-25 20:34:33,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:34:33,971 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:34:33,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 42 [2021-11-25 20:34:34,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 21 [2021-11-25 20:34:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:34:34,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:34,287 INFO L354 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2021-11-25 20:34:34,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 38 [2021-11-25 20:34:34,296 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2306 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem73#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2306) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2021-11-25 20:34:34,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891949335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:34:34,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 20:34:34,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 14] total 29 [2021-11-25 20:34:34,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464646451] [2021-11-25 20:34:34,300 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 20:34:34,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-25 20:34:34,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:34:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-25 20:34:34,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=756, Unknown=3, NotChecked=56, Total=930 [2021-11-25 20:34:34,302 INFO L87 Difference]: Start difference. First operand 1413 states and 1682 transitions. Second operand has 29 states, 28 states have (on average 6.071428571428571) internal successors, (170), 27 states have internal predecessors, (170), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 20:34:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:48,382 INFO L93 Difference]: Finished difference Result 1928 states and 2315 transitions. [2021-11-25 20:34:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 20:34:48,383 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.071428571428571) internal successors, (170), 27 states have internal predecessors, (170), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 92 [2021-11-25 20:34:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:48,386 INFO L225 Difference]: With dead ends: 1928 [2021-11-25 20:34:48,386 INFO L226 Difference]: Without dead ends: 1922 [2021-11-25 20:34:48,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 430 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=415, Invalid=2526, Unknown=33, NotChecked=106, Total=3080 [2021-11-25 20:34:48,389 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 917 mSDsluCounter, 12114 mSDsCounter, 0 mSdLazyCounter, 9220 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 12894 SdHoareTripleChecker+Invalid, 10098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 9220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 819 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:48,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 12894 Invalid, 10098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 9220 Invalid, 0 Unknown, 819 Unchecked, 12.9s Time] [2021-11-25 20:34:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-25 20:34:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1417. [2021-11-25 20:34:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 879 states have (on average 1.870307167235495) internal successors, (1644), 1390 states have internal predecessors, (1644), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:34:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1686 transitions. [2021-11-25 20:34:48,413 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1686 transitions. Word has length 92 [2021-11-25 20:34:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:48,414 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 1686 transitions. [2021-11-25 20:34:48,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.071428571428571) internal successors, (170), 27 states have internal predecessors, (170), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 20:34:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1686 transitions. [2021-11-25 20:34:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:34:48,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:48,415 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:48,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:48,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:48,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:49,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:34:49,032 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:34:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1832205975, now seen corresponding path program 1 times [2021-11-25 20:34:49,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:34:49,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696999084] [2021-11-25 20:34:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:49,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:34:49,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:34:49,035 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:34:49,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-25 20:34:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:49,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:34:49,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:49,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:50,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:34:50,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696999084] [2021-11-25 20:34:50,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696999084] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:34:50,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93516387] [2021-11-25 20:34:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:50,727 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:34:50,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:34:50,731 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:34:50,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-25 20:34:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:51,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:34:51,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:51,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:52,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [93516387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:34:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234100571] [2021-11-25 20:34:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:52,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:52,017 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:52,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-25 20:34:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:52,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 20:34:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:52,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:54,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234100571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:34:54,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:34:54,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2021-11-25 20:34:54,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711554241] [2021-11-25 20:34:54,299 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:34:54,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-25 20:34:54,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:34:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-25 20:34:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1012, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 20:34:54,301 INFO L87 Difference]: Start difference. First operand 1417 states and 1686 transitions. Second operand has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 38 states have internal predecessors, (122), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 20:34:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:57,647 INFO L93 Difference]: Finished difference Result 1469 states and 1754 transitions. [2021-11-25 20:34:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-25 20:34:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 38 states have internal predecessors, (122), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 97 [2021-11-25 20:34:57,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:57,658 INFO L225 Difference]: With dead ends: 1469 [2021-11-25 20:34:57,658 INFO L226 Difference]: Without dead ends: 1460 [2021-11-25 20:34:57,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1544, Invalid=3286, Unknown=0, NotChecked=0, Total=4830 [2021-11-25 20:34:57,660 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 220 mSDsluCounter, 21256 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 22448 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:57,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 22448 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:34:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-25 20:34:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1436. [2021-11-25 20:34:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 898 states have (on average 1.8596881959910914) internal successors, (1670), 1409 states have internal predecessors, (1670), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:34:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1712 transitions. [2021-11-25 20:34:57,700 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1712 transitions. Word has length 97 [2021-11-25 20:34:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:57,700 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 1712 transitions. [2021-11-25 20:34:57,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 38 states have internal predecessors, (122), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 20:34:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1712 transitions. [2021-11-25 20:34:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-25 20:34:57,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:57,703 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:57,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:57,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:58,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-25 20:34:58,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:58,322 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:34:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1362193827, now seen corresponding path program 2 times [2021-11-25 20:34:58,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:34:58,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924705978] [2021-11-25 20:34:58,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:34:58,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:34:58,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:34:58,324 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:34:58,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-25 20:34:59,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:34:59,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:34:59,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 20:34:59,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:59,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:35:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:04,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:35:04,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924705978] [2021-11-25 20:35:04,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924705978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:35:04,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080237351] [2021-11-25 20:35:04,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:35:04,302 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:35:04,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:35:04,308 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:35:04,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-25 20:35:06,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:35:06,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:35:06,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 20:35:06,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:35:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:06,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:35:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:35:07,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080237351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:35:07,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377576617] [2021-11-25 20:35:07,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:35:07,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:35:07,996 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:35:07,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-25 20:36:08,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:36:08,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:36:08,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-25 20:36:08,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:36:08,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:09,038 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:36:09,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-25 20:36:09,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:09,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:09,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:09,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:12,334 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3598 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3598) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_27 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_27) (_ bv44 32))) (exists ((v_ArrVal_3599 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3599) |c_#memory_$Pointer$.offset|))) is different from true [2021-11-25 20:36:12,396 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:36:12,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:12,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:12,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:12,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:36:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 171 trivial. 20 not checked. [2021-11-25 20:36:12,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:36:13,381 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3642 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3642) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3643 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3642 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3642) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3643) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2021-11-25 20:36:13,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377576617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:36:13,390 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 20:36:13,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 13] total 60 [2021-11-25 20:36:13,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764213377] [2021-11-25 20:36:13,391 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 20:36:13,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-25 20:36:13,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:36:13,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-25 20:36:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=3007, Unknown=3, NotChecked=238, Total=3906 [2021-11-25 20:36:13,393 INFO L87 Difference]: Start difference. First operand 1436 states and 1712 transitions. Second operand has 60 states, 59 states have (on average 3.4237288135593222) internal successors, (202), 57 states have internal predecessors, (202), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 20:37:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:23,310 INFO L93 Difference]: Finished difference Result 1996 states and 2437 transitions. [2021-11-25 20:37:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-25 20:37:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 3.4237288135593222) internal successors, (202), 57 states have internal predecessors, (202), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 108 [2021-11-25 20:37:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:23,316 INFO L225 Difference]: With dead ends: 1996 [2021-11-25 20:37:23,316 INFO L226 Difference]: Without dead ends: 1987 [2021-11-25 20:37:23,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 458 SyntacticMatches, 23 SemanticMatches, 136 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5757 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=2907, Invalid=15411, Unknown=50, NotChecked=538, Total=18906 [2021-11-25 20:37:23,323 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 1937 mSDsluCounter, 21308 mSDsCounter, 0 mSdLazyCounter, 18302 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 22088 SdHoareTripleChecker+Invalid, 22459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 18302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4003 IncrementalHoareTripleChecker+Unchecked, 47.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:23,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1968 Valid, 22088 Invalid, 22459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 18302 Invalid, 0 Unknown, 4003 Unchecked, 47.4s Time] [2021-11-25 20:37:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-11-25 20:37:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1467. [2021-11-25 20:37:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 930 states have (on average 1.8397849462365592) internal successors, (1711), 1440 states have internal predecessors, (1711), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:37:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1753 transitions. [2021-11-25 20:37:23,347 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1753 transitions. Word has length 108 [2021-11-25 20:37:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:23,347 INFO L470 AbstractCegarLoop]: Abstraction has 1467 states and 1753 transitions. [2021-11-25 20:37:23,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 3.4237288135593222) internal successors, (202), 57 states have internal predecessors, (202), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 20:37:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1753 transitions. [2021-11-25 20:37:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 20:37:23,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:23,349 INFO L514 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:37:23,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-25 20:37:23,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-25 20:37:23,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-25 20:37:23,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:37:23,957 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:37:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2080954921, now seen corresponding path program 1 times [2021-11-25 20:37:23,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:37:23,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884842017] [2021-11-25 20:37:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:23,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:37:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:37:23,960 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:37:23,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-25 20:37:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-25 20:37:24,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:37:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:26,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:37:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:31,140 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:37:31,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884842017] [2021-11-25 20:37:31,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884842017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:37:31,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1447468018] [2021-11-25 20:37:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:31,141 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:37:31,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:37:31,148 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:37:31,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-25 20:37:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:32,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-25 20:37:32,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:37:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:32,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:37:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:33,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1447468018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:37:33,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356600815] [2021-11-25 20:37:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:33,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:37:33,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:37:33,574 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:37:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-25 20:37:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:34,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-25 20:37:34,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:37:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:34,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:37:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:53,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356600815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:37:53,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:37:53,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46, 46, 46, 46] total 134 [2021-11-25 20:37:53,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668475593] [2021-11-25 20:37:53,369 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:37:53,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-11-25 20:37:53,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:37:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-11-25 20:37:53,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3407, Invalid=14415, Unknown=0, NotChecked=0, Total=17822 [2021-11-25 20:37:53,377 INFO L87 Difference]: Start difference. First operand 1467 states and 1753 transitions. Second operand has 134 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 134 states have internal predecessors, (221), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 20:38:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:38:59,632 INFO L93 Difference]: Finished difference Result 1654 states and 2001 transitions. [2021-11-25 20:38:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-11-25 20:38:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 134 states have internal predecessors, (221), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 132 [2021-11-25 20:38:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:38:59,636 INFO L225 Difference]: With dead ends: 1654 [2021-11-25 20:38:59,636 INFO L226 Difference]: Without dead ends: 1645 [2021-11-25 20:38:59,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12611 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=18243, Invalid=49097, Unknown=0, NotChecked=0, Total=67340 [2021-11-25 20:38:59,647 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 1838 mSDsluCounter, 83919 mSDsCounter, 0 mSdLazyCounter, 8527 mSolverCounterSat, 1834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 85170 SdHoareTripleChecker+Invalid, 10361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1834 IncrementalHoareTripleChecker+Valid, 8527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:38:59,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 85170 Invalid, 10361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1834 Valid, 8527 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2021-11-25 20:38:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2021-11-25 20:38:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1531. [2021-11-25 20:38:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 994 states have (on average 1.806841046277666) internal successors, (1796), 1504 states have internal predecessors, (1796), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:38:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1838 transitions. [2021-11-25 20:38:59,670 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1838 transitions. Word has length 132 [2021-11-25 20:38:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:38:59,671 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 1838 transitions. [2021-11-25 20:38:59,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 134 states have internal predecessors, (221), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 20:38:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1838 transitions. [2021-11-25 20:38:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 20:38:59,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:59,673 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:38:59,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2021-11-25 20:38:59,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:00,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:00,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:00,281 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:39:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1655953071, now seen corresponding path program 2 times [2021-11-25 20:39:00,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:39:00,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618364441] [2021-11-25 20:39:00,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:39:00,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:39:00,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:39:00,284 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:39:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-25 20:39:01,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-25 20:39:01,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:39:01,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:39:01,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:01,383 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-25 20:39:01,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 30 [2021-11-25 20:39:01,444 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 20:39:01,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 19 [2021-11-25 20:39:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-25 20:39:01,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:39:01,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:39:01,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618364441] [2021-11-25 20:39:01,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618364441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:01,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:01,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:39:01,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946653865] [2021-11-25 20:39:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:01,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:39:01,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:39:01,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:39:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:39:01,457 INFO L87 Difference]: Start difference. First operand 1531 states and 1838 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:39:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:05,071 INFO L93 Difference]: Finished difference Result 2576 states and 3069 transitions. [2021-11-25 20:39:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:39:05,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 135 [2021-11-25 20:39:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:05,078 INFO L225 Difference]: With dead ends: 2576 [2021-11-25 20:39:05,078 INFO L226 Difference]: Without dead ends: 2576 [2021-11-25 20:39:05,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:39:05,079 INFO L933 BasicCegarLoop]: 2078 mSDtfsCounter, 1859 mSDsluCounter, 5511 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 7589 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:05,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 7589 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1650 Invalid, 0 Unknown, 454 Unchecked, 3.5s Time] [2021-11-25 20:39:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-11-25 20:39:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1530. [2021-11-25 20:39:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 994 states have (on average 1.8058350100603622) internal successors, (1795), 1503 states have internal predecessors, (1795), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:39:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1837 transitions. [2021-11-25 20:39:05,103 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1837 transitions. Word has length 135 [2021-11-25 20:39:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:05,104 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 1837 transitions. [2021-11-25 20:39:05,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:39:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1837 transitions. [2021-11-25 20:39:05,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 20:39:05,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:05,106 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:39:05,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-25 20:39:05,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:39:05,322 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:39:05,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1655953070, now seen corresponding path program 1 times [2021-11-25 20:39:05,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:39:05,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74587255] [2021-11-25 20:39:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:05,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:39:05,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:39:05,325 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:39:05,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-25 20:39:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:06,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-25 20:39:06,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:06,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:06,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:06,883 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:39:06,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-25 20:39:06,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:06,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:07,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:07,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:08,997 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5641 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5641) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5640 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5640) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_38 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_38) (_ bv44 32)))) is different from true [2021-11-25 20:39:09,063 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:39:09,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:09,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:09,233 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:39:09,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:09,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:09,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:09,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:39:09,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:09,624 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5642) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5643 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5642) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5643) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2021-11-25 20:39:09,662 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5643 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_5642) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_5643) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5642) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-11-25 20:39:10,481 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5735) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5642) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5643 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5734)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5735) .cse2 v_ArrVal_5642) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_5643) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:39:10,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:39:10,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74587255] [2021-11-25 20:39:10,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74587255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:10,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1263020817] [2021-11-25 20:39:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:10,491 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:39:10,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:39:10,492 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:39:10,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-11-25 20:39:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:14,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-25 20:39:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:14,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:14,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:15,396 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:39:15,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 [2021-11-25 20:39:15,417 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:39:15,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-25 20:39:15,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:15,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:15,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:15,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:19,070 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6177 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6177) |c_#memory_$Pointer$.offset|)) (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= (select |c_#length| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_10|) (_ bv40 32))) (exists ((|v_ULTIMATE.start_main_#t~mem73#1.base_BEFORE_CALL_6| (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| |v_ULTIMATE.start_main_#t~mem73#1.base_BEFORE_CALL_6|)))) is different from true [2021-11-25 20:39:19,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:19,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:19,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:19,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:19,365 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-25 20:39:19,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:19,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:19,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:39:19,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:19,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 235 treesize of output 163 [2021-11-25 20:39:26,882 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_56 (_ BitVec 32)) (v_ArrVal_6227 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6227) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) (_ bv20 32)) (select |c_#length| v_arrayElimCell_56))) (and (forall ((v_ArrVal_6178 (_ BitVec 32))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6227)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse4 (= (bvadd .cse1 (_ bv8 32)) |c_ULTIMATE.start_main_~user~0#1.offset|)) (.cse3 (= v_arrayElimCell_56 |c_ULTIMATE.start_main_~user~0#1.base|))) (or (and (bvule (bvadd (_ bv8 32) (select (select (store .cse0 v_arrayElimCell_56 (store (select .cse0 v_arrayElimCell_56) (bvadd (_ bv16 32) .cse1) v_ArrVal_6178)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| v_arrayElimCell_56)) (or (not .cse3) (not .cse4))) (and (forall ((v_ArrVal_6179 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6227))) (store .cse5 v_arrayElimCell_56 (store (select .cse5 v_arrayElimCell_56) (bvadd (_ bv16 32) (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6)) v_ArrVal_6178))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (select |c_#length| v_ArrVal_6179))) .cse4 .cse3)))))) (forall ((v_prenex_5 (_ BitVec 32))) (let ((.cse7 (let ((.cse9 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6227))) (store .cse8 v_arrayElimCell_56 (store (select .cse8 v_arrayElimCell_56) (bvadd (_ bv16 32) (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse9)) v_prenex_5))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse9)))) (bvule (bvadd (_ bv4 32) .cse7) (bvadd (_ bv8 32) .cse7))))))) is different from false [2021-11-25 20:39:26,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1263020817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027417811] [2021-11-25 20:39:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:26,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:26,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:26,895 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:26,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-25 20:39:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:27,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-25 20:39:27,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:27,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:27,776 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:39:27,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 20:39:27,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:27,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:28,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:28,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,284 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:39:30,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,619 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:39:30,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 20:39:30,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:39:30,744 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_6712 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_6712 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6712) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32)))))) is different from false [2021-11-25 20:39:30,780 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_6712 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6712 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_6712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_6713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:39:31,626 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_6804 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6712 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6804) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6805) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6804 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6712 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6805)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6804) .cse2 v_ArrVal_6712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_6713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:39:31,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027417811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:39:31,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:39:31,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 14] total 37 [2021-11-25 20:39:31,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872096422] [2021-11-25 20:39:31,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:39:31,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-25 20:39:31,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:39:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-25 20:39:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1399, Unknown=49, NotChecked=756, Total=2352 [2021-11-25 20:39:31,637 INFO L87 Difference]: Start difference. First operand 1530 states and 1837 transitions. Second operand has 38 states, 34 states have (on average 7.0) internal successors, (238), 31 states have internal predecessors, (238), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 20:39:33,226 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6710 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6710) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5641 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5641) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6177 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6177) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5640 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5640) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_6711 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6711) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_38 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_38) (_ bv44 32))) (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= (select |c_#length| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_10|) (_ bv40 32))) (exists ((|v_ULTIMATE.start_main_#t~mem73#1.base_BEFORE_CALL_6| (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| |v_ULTIMATE.start_main_#t~mem73#1.base_BEFORE_CALL_6|)))) is different from true [2021-11-25 20:39:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:56,330 INFO L93 Difference]: Finished difference Result 2684 states and 3223 transitions. [2021-11-25 20:39:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:39:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 7.0) internal successors, (238), 31 states have internal predecessors, (238), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 135 [2021-11-25 20:39:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:56,337 INFO L225 Difference]: With dead ends: 2684 [2021-11-25 20:39:56,338 INFO L226 Difference]: Without dead ends: 2684 [2021-11-25 20:39:56,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 247 SyntacticMatches, 133 SemanticMatches, 60 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=284, Invalid=2340, Unknown=68, NotChecked=1090, Total=3782 [2021-11-25 20:39:56,339 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 2703 mSDsluCounter, 13178 mSDsCounter, 0 mSdLazyCounter, 16232 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 14111 SdHoareTripleChecker+Invalid, 30495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 16232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14198 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:56,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2708 Valid, 14111 Invalid, 30495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 16232 Invalid, 0 Unknown, 14198 Unchecked, 23.3s Time] [2021-11-25 20:39:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-11-25 20:39:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1529. [2021-11-25 20:39:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 994 states have (on average 1.8048289738430583) internal successors, (1794), 1502 states have internal predecessors, (1794), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:39:56,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1836 transitions. [2021-11-25 20:39:56,362 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1836 transitions. Word has length 135 [2021-11-25 20:39:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:56,363 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 1836 transitions. [2021-11-25 20:39:56,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 7.0) internal successors, (238), 31 states have internal predecessors, (238), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 20:39:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1836 transitions. [2021-11-25 20:39:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:39:56,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:56,365 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:39:56,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-25 20:39:56,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:56,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2021-11-25 20:39:56,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:39:56,986 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:39:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash -503241629, now seen corresponding path program 1 times [2021-11-25 20:39:56,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:39:56,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051793702] [2021-11-25 20:39:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:56,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:39:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:39:56,988 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:39:56,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-25 20:39:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:58,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-25 20:39:58,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:58,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:58,420 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:39:58,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 29 [2021-11-25 20:39:58,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:39:58,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-25 20:40:02,074 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_69 (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_14| (_ BitVec 32)) (v_arrayElimCell_67 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_67))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| v_arrayElimCell_69)))) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg .cse0)))) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_14|))))))) (not (= v_arrayElimCell_69 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_14|)) (= (_ bv0 1) (bvadd .cse0 (_ bv1 1)))))) (exists ((v_ArrVal_7259 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7259) |c_#memory_$Pointer$.base|))) is different from true [2021-11-25 20:40:02,225 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:02,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:40:02,397 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:02,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 40 [2021-11-25 20:40:02,526 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:02,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:40:02,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 17 [2021-11-25 20:40:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:40:02,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:02,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7261 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7261) |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 [2021-11-25 20:40:02,693 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7261 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7261) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:02,709 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7260 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7260))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7261)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:02,732 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7260 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7260))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7261)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:03,073 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7260 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7307))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7260)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7261)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:03,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:40:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051793702] [2021-11-25 20:40:03,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051793702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1872555580] [2021-11-25 20:40:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:03,076 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:40:03,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:40:03,077 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:40:03,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-25 20:40:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:09,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-25 20:40:09,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:09,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:10,044 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:40:10,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 30 [2021-11-25 20:40:10,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:10,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-25 20:40:13,566 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:13,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 40 [2021-11-25 20:40:13,651 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:13,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 40 [2021-11-25 20:40:13,729 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:13,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:40:13,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 17 [2021-11-25 20:40:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 20:40:13,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:13,802 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7763) |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 [2021-11-25 20:40:13,812 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-25 20:40:13,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:13,848 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7762))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7763)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:13,859 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7762))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7763)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))))))) is different from false [2021-11-25 20:40:14,146 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7809 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7809))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7762)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7763)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:14,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1872555580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745600794] [2021-11-25 20:40:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:14,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:14,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:14,160 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:14,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-25 20:40:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:14,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-25 20:40:14,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:15,104 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:40:15,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2021-11-25 20:40:15,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:17,654 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:17,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 43 [2021-11-25 20:40:17,803 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:17,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 43 [2021-11-25 20:40:17,900 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:17,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 44 [2021-11-25 20:40:17,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 21 [2021-11-25 20:40:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 20:40:17,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:18,138 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8263 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8263) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) (_ bv1 1)))) is different from false [2021-11-25 20:40:18,159 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8263 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8262))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8263)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) is different from false [2021-11-25 20:40:18,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8263 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8262))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8263)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))))) is different from false [2021-11-25 20:40:18,565 INFO L354 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2021-11-25 20:40:18,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 67 [2021-11-25 20:40:18,580 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8263 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8262 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem73#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8309))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8262)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8263)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2021-11-25 20:40:18,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745600794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:18,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:40:18,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 29 [2021-11-25 20:40:18,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711354193] [2021-11-25 20:40:18,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:18,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 20:40:18,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:40:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 20:40:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=811, Unknown=46, NotChecked=1168, Total=2162 [2021-11-25 20:40:18,585 INFO L87 Difference]: Start difference. First operand 1529 states and 1836 transitions. Second operand has 30 states, 27 states have (on average 4.62962962962963) internal successors, (125), 26 states have internal predecessors, (125), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 20:40:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:33,283 INFO L93 Difference]: Finished difference Result 2689 states and 3228 transitions. [2021-11-25 20:40:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 20:40:33,284 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.62962962962963) internal successors, (125), 26 states have internal predecessors, (125), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 138 [2021-11-25 20:40:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:33,287 INFO L225 Difference]: With dead ends: 2689 [2021-11-25 20:40:33,287 INFO L226 Difference]: Without dead ends: 2689 [2021-11-25 20:40:33,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 261 SyntacticMatches, 139 SemanticMatches, 53 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=182, Invalid=1298, Unknown=66, NotChecked=1424, Total=2970 [2021-11-25 20:40:33,288 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 1635 mSDsluCounter, 14005 mSDsCounter, 0 mSdLazyCounter, 8619 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 15141 SdHoareTripleChecker+Invalid, 17848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 8619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9189 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:33,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 15141 Invalid, 17848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 8619 Invalid, 0 Unknown, 9189 Unchecked, 11.7s Time] [2021-11-25 20:40:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-11-25 20:40:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1528. [2021-11-25 20:40:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 994 states have (on average 1.8038229376257546) internal successors, (1793), 1501 states have internal predecessors, (1793), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:40:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1835 transitions. [2021-11-25 20:40:33,312 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1835 transitions. Word has length 138 [2021-11-25 20:40:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:33,312 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 1835 transitions. [2021-11-25 20:40:33,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.62962962962963) internal successors, (125), 26 states have internal predecessors, (125), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 20:40:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1835 transitions. [2021-11-25 20:40:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:40:33,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:33,314 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:40:33,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:33,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:33,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:33,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:40:33,940 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:40:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash -503241628, now seen corresponding path program 1 times [2021-11-25 20:40:33,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:40:33,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108448114] [2021-11-25 20:40:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:33,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:40:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:40:33,943 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:40:33,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-25 20:40:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:35,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-25 20:40:35,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:35,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:35,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:35,704 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:40:35,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 18 [2021-11-25 20:40:35,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:35,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:35,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:35,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:37,789 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8809 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8809) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_8808 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8808) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_93 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_93) (_ bv44 32)))) is different from true [2021-11-25 20:40:37,835 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:37,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:37,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:37,967 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:37,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:37,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:38,082 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:40:38,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:38,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:38,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:38,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:40:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:40:38,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:38,402 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2021-11-25 20:40:38,440 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_8813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:40:38,616 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8810) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8811) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8811)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8810) .cse2 v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:40:38,678 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8811))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8810) .cse1 v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_8810) (select (select (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_8811) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6) v_ArrVal_8812)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6)))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))) is different from false [2021-11-25 20:40:40,623 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_8905 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8904 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8905))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8904) .cse1 v_ArrVal_8810) (select (select (store .cse2 .cse1 v_ArrVal_8811) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8812))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8905 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8904 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8810 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8905)) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (let ((.cse7 (store .cse8 .cse4 v_ArrVal_8811))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8904) .cse4 v_ArrVal_8810) .cse5 v_ArrVal_8812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6) (_ bv12 32)) (select |c_#length| (select (select (store .cse7 .cse5 v_ArrVal_8813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))))))))) is different from false [2021-11-25 20:40:40,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:40:40,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108448114] [2021-11-25 20:40:40,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108448114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:40:40,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [691613046] [2021-11-25 20:40:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:40,639 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:40:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:40:40,640 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:40:40,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2021-11-25 20:42:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:36,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 124 conjunts are in the unsatisfiable core [2021-11-25 20:42:36,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:36,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:36,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:37,051 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:42:37,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-25 20:42:37,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:37,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:37,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:37,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:41,372 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9405 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_9405) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_9404 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_9404) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_93 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_93) (_ bv44 32)))) is different from true [2021-11-25 20:42:41,470 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:42:41,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:41,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:41,796 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:42:41,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:41,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:42,040 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:42:42,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:42,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:42,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:42,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:42:42,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:42,212 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9408 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32)))))) is different from false [2021-11-25 20:42:42,253 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9408 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))) is different from false [2021-11-25 20:42:42,314 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9406) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9407)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9406) .cse2 v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_9408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:42:42,368 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9406) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9409)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_9407))) (let ((.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_9406) .cse4 v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_9408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))))))))) is different from false [2021-11-25 20:42:43,542 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9406 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9501 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9500 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9500))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9501) .cse1 v_ArrVal_9406) (select (select (store .cse2 .cse1 v_ArrVal_9407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9409))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9406 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9501 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9500 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9500)) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (let ((.cse7 (store .cse8 .cse4 v_ArrVal_9407))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9501) .cse4 v_ArrVal_9406) .cse5 v_ArrVal_9409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6) (_ bv12 32)) (select |c_#length| (select (select (store .cse7 .cse5 v_ArrVal_9408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))))))))) is different from false [2021-11-25 20:42:43,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [691613046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:42:43,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155757163] [2021-11-25 20:42:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:43,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:43,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:43,564 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:42:43,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-25 20:42:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:44,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-25 20:42:44,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:44,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:44,994 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:42:44,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 18 [2021-11-25 20:42:45,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:45,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:45,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:45,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,021 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9999 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_9999) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_10000 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_10000) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_93 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_93) (_ bv44 32)))) is different from true [2021-11-25 20:42:49,133 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:42:49,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,338 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:42:49,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,448 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:42:49,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:42:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:42:49,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:42:49,616 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10004 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2021-11-25 20:42:49,667 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10004 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_10004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:42:49,734 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10001 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10002 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10001) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10004 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10001 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10002 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10002)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10001) .cse2 v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_10004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:42:49,790 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10001 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10002 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10001) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10003)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10004 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10001 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10002 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_10002))) (let ((.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_10001) .cse4 v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_10004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))))))))) is different from false [2021-11-25 20:42:51,041 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_10096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10001 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10095 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10096))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10095) .cse1 v_ArrVal_10001) (select (select (store .cse2 .cse1 v_ArrVal_10002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10003))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10004 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10001 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10095 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10096)) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (let ((.cse7 (store .cse8 .cse4 v_ArrVal_10002))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10095) .cse4 v_ArrVal_10001) .cse5 v_ArrVal_10003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6) (_ bv12 32)) (select |c_#length| (select (select (store .cse7 .cse5 v_ArrVal_10004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))))))))) is different from false [2021-11-25 20:42:51,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155757163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:42:51,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:42:51,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 25 [2021-11-25 20:42:51,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045298619] [2021-11-25 20:42:51,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:42:51,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 20:42:51,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:42:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 20:42:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=543, Unknown=19, NotChecked=1134, Total=1806 [2021-11-25 20:42:51,056 INFO L87 Difference]: Start difference. First operand 1528 states and 1835 transitions. Second operand has 26 states, 23 states have (on average 7.478260869565218) internal successors, (172), 22 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 20:43:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:43:46,344 INFO L93 Difference]: Finished difference Result 2682 states and 3221 transitions. [2021-11-25 20:43:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:43:46,346 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 7.478260869565218) internal successors, (172), 22 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 138 [2021-11-25 20:43:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:43:46,351 INFO L225 Difference]: With dead ends: 2682 [2021-11-25 20:43:46,351 INFO L226 Difference]: Without dead ends: 2682 [2021-11-25 20:43:46,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 265 SyntacticMatches, 137 SemanticMatches, 52 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=193, Invalid=1094, Unknown=45, NotChecked=1530, Total=2862 [2021-11-25 20:43:46,353 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 2934 mSDsluCounter, 10812 mSDsCounter, 0 mSdLazyCounter, 16580 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 11924 SdHoareTripleChecker+Invalid, 26360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 16580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9735 IncrementalHoareTripleChecker+Unchecked, 53.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:43:46,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2939 Valid, 11924 Invalid, 26360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 16580 Invalid, 0 Unknown, 9735 Unchecked, 53.7s Time] [2021-11-25 20:43:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-11-25 20:43:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1527. [2021-11-25 20:43:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 994 states have (on average 1.8028169014084507) internal successors, (1792), 1500 states have internal predecessors, (1792), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:43:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 1834 transitions. [2021-11-25 20:43:46,382 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 1834 transitions. Word has length 138 [2021-11-25 20:43:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:43:46,383 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 1834 transitions. [2021-11-25 20:43:46,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 7.478260869565218) internal successors, (172), 22 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 20:43:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 1834 transitions. [2021-11-25 20:43:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 20:43:46,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:43:46,385 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:43:46,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:46,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-11-25 20:43:46,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2021-11-25 20:43:47,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:47,004 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:43:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:43:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1659802424, now seen corresponding path program 1 times [2021-11-25 20:43:47,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:43:47,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065671472] [2021-11-25 20:43:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:43:47,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:43:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:43:47,006 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:43:47,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-25 20:43:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:43:48,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-25 20:43:48,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:43:48,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:43:48,992 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:43:48,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 29 [2021-11-25 20:43:49,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:43:49,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-25 20:43:55,940 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:43:55,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:43:56,231 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:43:56,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 41 [2021-11-25 20:43:56,530 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:43:56,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:43:56,756 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:43:56,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:43:56,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 17 [2021-11-25 20:43:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 20:43:56,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:43:57,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10568) |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 [2021-11-25 20:43:57,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_10568) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:43:57,170 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10567 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10567))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10568)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:43:57,192 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10567 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10567))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10568)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:43:57,227 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10566 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10567 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10566))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10567)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10568)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:43:57,254 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10566 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10567 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10566))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10567)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10568)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:43:57,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10568 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10566 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10567 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10614))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10566)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10567)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10568)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:43:57,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:43:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065671472] [2021-11-25 20:43:57,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065671472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:43:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1588919116] [2021-11-25 20:43:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:43:57,761 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:43:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:43:57,764 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:43:57,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2021-11-25 20:44:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:44:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-25 20:44:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:44:05,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:06,386 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 20:44:06,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 30 [2021-11-25 20:44:06,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:06,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-25 20:44:13,016 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:13,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 40 [2021-11-25 20:44:13,189 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:13,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 42 [2021-11-25 20:44:13,333 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:13,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 41 [2021-11-25 20:44:13,500 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:13,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 40 [2021-11-25 20:44:13,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 17 [2021-11-25 20:44:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 20:44:13,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:44:13,673 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_11086) |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 [2021-11-25 20:44:13,693 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_11086) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) (_ bv1 1)))) is different from false [2021-11-25 20:44:13,722 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11085 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_11085))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11086)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (_ bv1 1)))) is different from false [2021-11-25 20:44:13,744 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11085 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11085))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11086)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) (_ bv1 1)))) is different from false [2021-11-25 20:44:13,778 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11084 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11085 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_11084))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11085)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11086)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:44:13,804 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11084 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11085 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11084))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11085)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11086)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:44:14,324 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11084 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11085 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_11132))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11084)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11085)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11086)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))))))) (_ bv1 1)))) is different from false [2021-11-25 20:44:14,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1588919116] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:44:14,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782178687] [2021-11-25 20:44:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:44:14,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:44:14,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:44:14,329 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:44:14,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-25 20:44:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:44:15,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-25 20:44:15,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:44:15,585 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:44:15,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 20 [2021-11-25 20:44:15,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:20,695 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11599 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_11599) |c_#memory_$Pointer$.base|)) is different from true [2021-11-25 20:44:20,747 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:20,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 26 [2021-11-25 20:44:20,916 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:20,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 26 [2021-11-25 20:44:21,110 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:21,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 26 [2021-11-25 20:44:21,287 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:21,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 39 [2021-11-25 20:44:21,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 17 [2021-11-25 20:44:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-11-25 20:44:21,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:44:21,557 INFO L354 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2021-11-25 20:44:21,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-11-25 20:44:21,573 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem76#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2021-11-25 20:44:21,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2021-11-25 20:44:21,613 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11601 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_11601)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2021-11-25 20:44:21,631 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11601 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11601))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2021-11-25 20:44:21,659 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11601 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_11600))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11601)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2021-11-25 20:44:21,680 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11601 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11600))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11601)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2021-11-25 20:44:22,219 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11648 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_11648))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11600)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11601)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_11602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2021-11-25 20:44:22,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782178687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:44:22,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:44:22,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2021-11-25 20:44:22,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541994691] [2021-11-25 20:44:22,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:44:22,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 20:44:22,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:44:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 20:44:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=762, Unknown=50, NotChecked=1694, Total=2652 [2021-11-25 20:44:22,226 INFO L87 Difference]: Start difference. First operand 1527 states and 1834 transitions. Second operand has 30 states, 27 states have (on average 4.703703703703703) internal successors, (127), 26 states have internal predecessors, (127), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 20:44:22,985 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10565 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_10565) |c_#memory_$Pointer$.base|)) (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_26| (_ BitVec 32)) (v_arrayElimCell_129 (_ BitVec 32)) (v_arrayElimCell_127 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg v_arrayElimCell_127)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| v_arrayElimCell_129)))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_26|))))) (bvneg (bvneg (bvneg .cse0))))) (not (= v_arrayElimCell_129 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_26|))))) (exists ((v_ArrVal_11599 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_11599) |c_#memory_$Pointer$.base|))) is different from true [2021-11-25 20:44:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:44:33,716 INFO L93 Difference]: Finished difference Result 2220 states and 2633 transitions. [2021-11-25 20:44:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:44:33,717 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.703703703703703) internal successors, (127), 26 states have internal predecessors, (127), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 141 [2021-11-25 20:44:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:44:33,720 INFO L225 Difference]: With dead ends: 2220 [2021-11-25 20:44:33,720 INFO L226 Difference]: Without dead ends: 2220 [2021-11-25 20:44:33,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 272 SyntacticMatches, 141 SemanticMatches, 55 ConstructedPredicates, 23 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=166, Invalid=991, Unknown=57, NotChecked=1978, Total=3192 [2021-11-25 20:44:33,721 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 862 mSDsluCounter, 15324 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 10426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7092 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:44:33,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 16614 Invalid, 10426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3300 Invalid, 0 Unknown, 7092 Unchecked, 11.0s Time] [2021-11-25 20:44:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-11-25 20:44:33,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1526. [2021-11-25 20:44:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 994 states have (on average 1.8018108651911469) internal successors, (1791), 1499 states have internal predecessors, (1791), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-25 20:44:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1833 transitions. [2021-11-25 20:44:33,743 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1833 transitions. Word has length 141 [2021-11-25 20:44:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:44:33,743 INFO L470 AbstractCegarLoop]: Abstraction has 1526 states and 1833 transitions. [2021-11-25 20:44:33,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.703703703703703) internal successors, (127), 26 states have internal predecessors, (127), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 20:44:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1833 transitions. [2021-11-25 20:44:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 20:44:33,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:44:33,745 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:44:33,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-25 20:44:33,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2021-11-25 20:44:34,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-25 20:44:34,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:44:34,356 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-25 20:44:34,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:44:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1659802425, now seen corresponding path program 1 times [2021-11-25 20:44:34,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:44:34,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387108239] [2021-11-25 20:44:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:44:34,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:44:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:44:34,358 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:44:34,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-25 20:44:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:44:35,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-25 20:44:35,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:44:35,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:36,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:36,753 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:44:36,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-25 20:44:36,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:36,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:37,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:37,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,207 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:41,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,504 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:41,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,734 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:41,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,972 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:44:41,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:41,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:42,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:42,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:44:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 20:44:42,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:44:42,549 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2021-11-25 20:44:42,589 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))) is different from false [2021-11-25 20:44:42,725 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12166) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12167) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12167)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12166) .cse2 v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2021-11-25 20:44:42,880 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_12167))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_12166) .cse1 v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse6))) (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_12166) (select (select (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_12167) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6) v_ArrVal_12169)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6)))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd .cse4 (_ bv24 32)))))) is different from false [2021-11-25 20:44:43,779 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12164)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_12167))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12165) .cse0 v_ArrVal_12166) .cse1 v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (let ((.cse8 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12164))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse8))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12165) .cse6 v_ArrVal_12166) (select (select (store .cse7 .cse6 v_ArrVal_12167) |c_ULTIMATE.start_main_~user~0#1.base|) .cse8) v_ArrVal_12169))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse8)))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32)))))) is different from false [2021-11-25 20:44:45,209 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_12164))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_12167))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_12165) .cse1 v_ArrVal_12166) .cse2 v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (let ((.cse10 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse10))) (let ((.cse9 (store |c_#memory_$Pointer$.base| .cse7 v_ArrVal_12164))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse10))) (store (store (store |c_#memory_$Pointer$.offset| .cse7 v_ArrVal_12165) .cse8 v_ArrVal_12166) (select (select (store .cse9 .cse8 v_ArrVal_12167) |c_ULTIMATE.start_main_~user~0#1.base|) .cse10) v_ArrVal_12169)))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse10)))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))) is different from false [2021-11-25 20:44:47,250 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12260 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12260)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_12164))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_12167))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12261) .cse0 v_ArrVal_12165) .cse1 v_ArrVal_12166) .cse2 v_ArrVal_12169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_12168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_12166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12167 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12169 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12260 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (let ((.cse11 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12260))) (let ((.cse8 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse11))) (let ((.cse10 (store .cse12 .cse8 v_ArrVal_12164))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse11))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12261) .cse8 v_ArrVal_12165) .cse9 v_ArrVal_12166) (select (select (store .cse10 .cse9 v_ArrVal_12167) |c_ULTIMATE.start_main_~user~0#1.base|) .cse11) v_ArrVal_12169))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse11)))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd .cse7 (_ bv24 32)))))) is different from false [2021-11-25 20:44:47,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:44:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387108239] [2021-11-25 20:44:47,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387108239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:44:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [38762170] [2021-11-25 20:44:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:44:47,267 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:44:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:44:47,268 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:44:47,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f6a079-32d6-4ffe-a4b4-5afbfe05e05c/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process