./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V --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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:48:07,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:48:07,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:48:08,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:48:08,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:48:08,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:48:08,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:48:08,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:48:08,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:48:08,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:48:08,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:48:08,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:48:08,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:48:08,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:48:08,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:48:08,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:48:08,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:48:08,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:48:08,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:48:08,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:48:08,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:48:08,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:48:08,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:48:08,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:48:08,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:48:08,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:48:08,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:48:08,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:48:08,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:48:08,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:48:08,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:48:08,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:48:08,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:48:08,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:48:08,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:48:08,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:48:08,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:48:08,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:48:08,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:48:08,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:48:08,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:48:08,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:48:08,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:48:08,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:48:08,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:48:08,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:48:08,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:48:08,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:48:08,115 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:48:08,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:48:08,116 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:48:08,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:48:08,117 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:48:08,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:48:08,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:48:08,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:48:08,123 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:48:08,123 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:48:08,123 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:48:08,124 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:48:08,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:48:08,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:48:08,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:48:08,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:48:08,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:48:08,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:48:08,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:48:08,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:48:08,127 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:48:08,127 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:48:08,128 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:48:08,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:48:08,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:48:08,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:48:08,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:48:08,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:48:08,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:48:08,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:48:08,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:48:08,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:48:08,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:48:08,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:48:08,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:48:08,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:48:08,134 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_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-11-23 03:48:08,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:48:08,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:48:08,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:48:08,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:48:08,449 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:48:08,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-23 03:48:08,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/a49852e94/603f1a0a5016443b816440657331f52a/FLAG36883b491 [2021-11-23 03:48:09,114 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:48:09,114 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-23 03:48:09,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/a49852e94/603f1a0a5016443b816440657331f52a/FLAG36883b491 [2021-11-23 03:48:09,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/a49852e94/603f1a0a5016443b816440657331f52a [2021-11-23 03:48:09,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:48:09,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:48:09,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:48:09,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:48:09,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:48:09,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:09" (1/1) ... [2021-11-23 03:48:09,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44565293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:09, skipping insertion in model container [2021-11-23 03:48:09,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:09" (1/1) ... [2021-11-23 03:48:09,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:48:09,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:48:09,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:48:09,933 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) [2021-11-23 03:48:09,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78b16d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:09, skipping insertion in model container [2021-11-23 03:48:09,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:48:09,934 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 03:48:09,936 INFO L158 Benchmark]: Toolchain (without parser) took 519.96ms. Allocated memory is still 111.1MB. Free memory was 76.4MB in the beginning and 79.8MB in the end (delta: -3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:48:09,937 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:48:09,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.60ms. Allocated memory is still 111.1MB. Free memory was 76.2MB in the beginning and 79.8MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:48:09,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.60ms. Allocated memory is still 111.1MB. Free memory was 76.2MB in the beginning and 79.8MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types 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_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V --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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:48:12,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:48:12,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:48:12,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:48:12,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:48:12,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:48:12,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:48:12,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:48:12,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:48:12,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:48:12,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:48:12,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:48:12,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:48:12,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:48:12,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:48:12,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:48:12,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:48:12,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:48:12,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:48:12,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:48:12,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:48:12,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:48:12,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:48:12,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:48:12,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:48:12,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:48:12,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:48:12,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:48:12,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:48:12,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:48:12,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:48:12,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:48:12,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:48:12,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:48:12,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:48:12,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:48:12,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:48:12,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:48:12,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:48:12,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:48:12,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:48:12,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:48:12,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:48:12,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:48:12,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:48:12,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:48:12,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:48:12,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:48:12,455 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:48:12,456 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:48:12,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:48:12,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:48:12,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:48:12,459 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:48:12,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:48:12,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:48:12,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:48:12,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:48:12,461 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:48:12,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:48:12,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:48:12,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:48:12,462 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:48:12,463 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:48:12,463 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:48:12,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:48:12,463 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:48:12,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:48:12,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:48:12,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:48:12,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:48:12,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:48:12,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:48:12,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:48:12,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:48:12,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:48:12,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:48:12,466 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:48:12,467 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:48:12,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:48:12,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:48:12,467 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_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-11-23 03:48:12,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:48:12,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:48:12,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:48:12,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:48:12,856 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:48:12,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-23 03:48:12,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/f5c6fda40/b1884158a85a4db7b0c5cd47c0e83607/FLAGbc224dce1 [2021-11-23 03:48:13,665 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:48:13,668 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-23 03:48:13,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/f5c6fda40/b1884158a85a4db7b0c5cd47c0e83607/FLAGbc224dce1 [2021-11-23 03:48:13,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/data/f5c6fda40/b1884158a85a4db7b0c5cd47c0e83607 [2021-11-23 03:48:13,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:48:13,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:48:13,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:48:13,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:48:13,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:48:13,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:13" (1/1) ... [2021-11-23 03:48:13,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df8118a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:13, skipping insertion in model container [2021-11-23 03:48:13,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:13" (1/1) ... [2021-11-23 03:48:13,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:48:13,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:48:14,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:48:14,535 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 03:48:14,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:48:14,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:48:14,619 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:48:14,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:48:14,780 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:48:14,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14 WrapperNode [2021-11-23 03:48:14,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:48:14,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:48:14,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:48:14,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:48:14,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,847 INFO L137 Inliner]: procedures = 176, calls = 103, calls flagged for inlining = 31, calls inlined = 14, statements flattened = 170 [2021-11-23 03:48:14,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:48:14,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:48:14,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:48:14,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:48:14,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:48:14,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:48:14,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:48:14,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:48:14,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (1/1) ... [2021-11-23 03:48:14,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:48:14,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:14,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:48:14,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:48:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 03:48:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:48:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:48:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:48:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:48:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 03:48:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:48:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:48:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:48:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:48:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:48:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:48:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:48:15,215 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:48:15,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:48:15,887 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:48:15,895 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:48:15,896 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:48:15,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:15 BoogieIcfgContainer [2021-11-23 03:48:15,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:48:15,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:48:15,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:48:15,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:48:15,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:48:13" (1/3) ... [2021-11-23 03:48:15,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4383a6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:15, skipping insertion in model container [2021-11-23 03:48:15,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:14" (2/3) ... [2021-11-23 03:48:15,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4383a6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:15, skipping insertion in model container [2021-11-23 03:48:15,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:15" (3/3) ... [2021-11-23 03:48:15,907 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-1.i [2021-11-23 03:48:15,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:48:15,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-23 03:48:15,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:48:15,968 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 [2021-11-23 03:48:15,969 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-23 03:48:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 73 states have (on average 1.821917808219178) internal successors, (133), 123 states have internal predecessors, (133), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:48:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:48:15,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:15,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:15,997 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:48:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash -599633160, now seen corresponding path program 1 times [2021-11-23 03:48:16,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:48:16,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805171545] [2021-11-23 03:48:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:16,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:48:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:48:16,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:48:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:48:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:16,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:48:16,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:48:16,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:48:16,418 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:48:16,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805171545] [2021-11-23 03:48:16,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805171545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:48:16,421 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:48:16,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:48:16,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379351633] [2021-11-23 03:48:16,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:48:16,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:48:16,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:48:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:48:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:48:16,504 INFO L87 Difference]: Start difference. First operand has 129 states, 73 states have (on average 1.821917808219178) internal successors, (133), 123 states have internal predecessors, (133), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-23 03:48:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:16,667 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-11-23 03:48:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:48:16,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2021-11-23 03:48:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:16,679 INFO L225 Difference]: With dead ends: 129 [2021-11-23 03:48:16,679 INFO L226 Difference]: Without dead ends: 127 [2021-11-23 03:48:16,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:48:16,685 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 128 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:16,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 515 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:48:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-23 03:48:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-23 03:48:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.8055555555555556) internal successors, (130), 121 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:48:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-11-23 03:48:16,733 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 11 [2021-11-23 03:48:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:16,735 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-11-23 03:48:16,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-23 03:48:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-11-23 03:48:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:48:16,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:16,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:16,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:16,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:48:16,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:48:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash 518474697, now seen corresponding path program 1 times [2021-11-23 03:48:16,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:48:16,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608660203] [2021-11-23 03:48:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:16,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:48:16,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:48:16,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:48:16,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:48:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:17,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:48:17,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:17,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:17,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:48:17,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608660203] [2021-11-23 03:48:17,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608660203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:48:17,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:48:17,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:48:17,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288918736] [2021-11-23 03:48:17,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:48:17,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:48:17,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:48:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:48:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:48:17,279 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:17,453 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2021-11-23 03:48:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:48:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-23 03:48:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:17,458 INFO L225 Difference]: With dead ends: 127 [2021-11-23 03:48:17,460 INFO L226 Difference]: Without dead ends: 127 [2021-11-23 03:48:17,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:48:17,463 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 123 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:17,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 474 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:48:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-23 03:48:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-23 03:48:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.7916666666666667) internal successors, (129), 121 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:48:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-11-23 03:48:17,497 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 17 [2021-11-23 03:48:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:17,498 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-11-23 03:48:17,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-11-23 03:48:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:48:17,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:17,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:17,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:17,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:48:17,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:48:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash -222458304, now seen corresponding path program 1 times [2021-11-23 03:48:17,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:48:17,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239020621] [2021-11-23 03:48:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:17,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:48:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:48:17,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:48:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:48:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:17,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:48:17,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:17,869 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 [2021-11-23 03:48:18,099 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:48:18,100 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 25 treesize of output 32 [2021-11-23 03:48:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:18,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:31,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:48:31,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239020621] [2021-11-23 03:48:31,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239020621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:48:31,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1783686171] [2021-11-23 03:48:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:31,159 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:48:31,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:48:31,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:48:31,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-23 03:48:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:31,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:48:31,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:31,345 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 [2021-11-23 03:48:31,451 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:48:31,451 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 [2021-11-23 03:48:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:31,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:40,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1783686171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:48:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704424969] [2021-11-23 03:48:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:40,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:40,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:40,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:40,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:48:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:48:40,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:40,178 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 [2021-11-23 03:48:40,299 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:48:40,299 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 25 treesize of output 32 [2021-11-23 03:48:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:40,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:46,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704424969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:48:46,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:48:46,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2021-11-23 03:48:46,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539755402] [2021-11-23 03:48:46,904 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:46,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:48:46,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:48:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:48:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=167, Unknown=6, NotChecked=0, Total=210 [2021-11-23 03:48:46,906 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 03:48:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:47,224 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2021-11-23 03:48:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:48:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-11-23 03:48:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:47,227 INFO L225 Difference]: With dead ends: 130 [2021-11-23 03:48:47,227 INFO L226 Difference]: Without dead ends: 130 [2021-11-23 03:48:47,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=61, Invalid=239, Unknown=6, NotChecked=0, Total=306 [2021-11-23 03:48:47,228 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 3 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:47,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 682 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 277 Unchecked, 0.2s Time] [2021-11-23 03:48:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-23 03:48:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-23 03:48:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 123 states have internal predecessors, (131), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:48:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2021-11-23 03:48:47,242 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 22 [2021-11-23 03:48:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:47,243 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2021-11-23 03:48:47,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 03:48:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2021-11-23 03:48:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:48:47,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:47,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:47,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:47,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:47,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:47,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 03:48:47,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:48:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash -222458303, now seen corresponding path program 1 times [2021-11-23 03:48:47,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:48:47,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966407842] [2021-11-23 03:48:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:47,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:48:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:48:47,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:48:47,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:48:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:48:47,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:47,992 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 [2021-11-23 03:48:48,000 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 [2021-11-23 03:48:50,276 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:48:50,277 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 29 treesize of output 31 [2021-11-23 03:48:50,288 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:48:50,289 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 23 treesize of output 23 [2021-11-23 03:48:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:50,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:08,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2021-11-23 03:49:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:49:08,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:49:08,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966407842] [2021-11-23 03:49:08,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966407842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:49:08,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195844496] [2021-11-23 03:49:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:08,734 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:49:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:49:08,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:49:08,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-23 03:49:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:49:08,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:08,905 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 [2021-11-23 03:49:08,912 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 [2021-11-23 03:49:11,136 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:49:11,136 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 31 treesize of output 33 [2021-11-23 03:49:11,150 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:49:11,150 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 25 treesize of output 25 [2021-11-23 03:49:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:49:11,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:33,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-23 03:49:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:49:33,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195844496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:49:33,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946571482] [2021-11-23 03:49:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:33,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:49:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:49:33,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:49:33,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 03:49:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:34,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:49:34,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:34,060 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 [2021-11-23 03:49:34,072 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 [2021-11-23 03:49:34,275 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:49:34,276 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 32 treesize of output 34 [2021-11-23 03:49:34,291 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:49:34,292 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 26 treesize of output 26 [2021-11-23 03:49:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:49:34,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:54,255 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_12| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_72| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_ldv_zalloc_#t~malloc13#1.base_49| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_49|)))))) (or (exists ((|v_ldv_zalloc_~size#1_48| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ bv8 32)) (select (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_49| |v_ldv_zalloc_~size#1_48|) |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_12|)))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ bv4 32)) (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ bv8 32))))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_72|)))) (and (forall ((|v_ldv_zalloc_~size#1_71| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ bv8 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_72| |v_ldv_zalloc_~size#1_71|) |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_12|))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ bv4 32)) (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_6| (_ bv8 32)))))) is different from true [2021-11-23 03:49:54,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-23 03:49:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:49:54,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946571482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:49:54,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:49:54,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-11-23 03:49:54,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641289278] [2021-11-23 03:49:54,624 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:49:54,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 03:49:54,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:49:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 03:49:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=272, Unknown=22, NotChecked=34, Total=380 [2021-11-23 03:49:54,625 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 03:49:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:49:55,627 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2021-11-23 03:49:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:49:55,628 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 22 [2021-11-23 03:49:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:49:55,630 INFO L225 Difference]: With dead ends: 179 [2021-11-23 03:49:55,630 INFO L226 Difference]: Without dead ends: 179 [2021-11-23 03:49:55,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=68, Invalid=334, Unknown=22, NotChecked=38, Total=462 [2021-11-23 03:49:55,632 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 196 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 595 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:49:55,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 774 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 217 Invalid, 0 Unknown, 595 Unchecked, 0.7s Time] [2021-11-23 03:49:55,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-23 03:49:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 151. [2021-11-23 03:49:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 144 states have internal predecessors, (170), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:49:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2021-11-23 03:49:55,645 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 22 [2021-11-23 03:49:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:49:55,645 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2021-11-23 03:49:55,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 03:49:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2021-11-23 03:49:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:49:55,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:49:55,647 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:49:55,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:49:55,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:49:56,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:49:56,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:49:56,250 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:49:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:49:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 965934497, now seen corresponding path program 1 times [2021-11-23 03:49:56,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:49:56,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326614084] [2021-11-23 03:49:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:56,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:49:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:49:56,252 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:49:56,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:49:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:49:56,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:49:56,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:49:56,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:49:56,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326614084] [2021-11-23 03:49:56,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326614084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:49:56,427 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:49:56,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:49:56,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135780195] [2021-11-23 03:49:56,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:49:56,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:49:56,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:49:56,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:49:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:49:56,429 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:49:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:49:56,679 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2021-11-23 03:49:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:49:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-11-23 03:49:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:49:56,681 INFO L225 Difference]: With dead ends: 167 [2021-11-23 03:49:56,681 INFO L226 Difference]: Without dead ends: 167 [2021-11-23 03:49:56,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:49:56,682 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 70 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:49:56,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 160 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:49:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-23 03:49:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2021-11-23 03:49:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 148 states have internal predecessors, (175), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:49:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2021-11-23 03:49:56,710 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 24 [2021-11-23 03:49:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:49:56,711 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2021-11-23 03:49:56,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:49:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2021-11-23 03:49:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:49:56,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:49:56,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:49:56,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:49:56,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:49:56,913 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:49:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:49:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -126280059, now seen corresponding path program 1 times [2021-11-23 03:49:56,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:49:56,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218841742] [2021-11-23 03:49:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:56,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:49:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:49:56,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:49:56,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:49:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:56,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:49:56,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:57,025 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 [2021-11-23 03:49:57,066 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 23 treesize of output 19 [2021-11-23 03:49:57,106 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 27 treesize of output 15 [2021-11-23 03:49:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:49:57,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:49:57,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:49:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218841742] [2021-11-23 03:49:57,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218841742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:49:57,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:49:57,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:49:57,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775965948] [2021-11-23 03:49:57,266 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:49:57,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:49:57,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:49:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:49:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:49:57,267 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-23 03:49:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:49:57,903 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2021-11-23 03:49:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:49:57,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-23 03:49:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:49:57,905 INFO L225 Difference]: With dead ends: 155 [2021-11-23 03:49:57,905 INFO L226 Difference]: Without dead ends: 155 [2021-11-23 03:49:57,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:49:57,906 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 10 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:49:57,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 494 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:49:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-23 03:49:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-11-23 03:49:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 105 states have (on average 1.6571428571428573) internal successors, (174), 147 states have internal predecessors, (174), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:49:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2021-11-23 03:49:57,916 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 27 [2021-11-23 03:49:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:49:57,917 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2021-11-23 03:49:57,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-23 03:49:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2021-11-23 03:49:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:49:57,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:49:57,919 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:49:57,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:49:58,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:49:58,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:49:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:49:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -126280058, now seen corresponding path program 1 times [2021-11-23 03:49:58,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:49:58,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978512524] [2021-11-23 03:49:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:58,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:49:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:49:58,131 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:49:58,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:49:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:58,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:49:58,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:58,254 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 [2021-11-23 03:49:58,340 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 19 treesize of output 15 [2021-11-23 03:49:58,353 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 [2021-11-23 03:49:58,424 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 27 [2021-11-23 03:49:58,427 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 24 treesize of output 12 [2021-11-23 03:49:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:49:58,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:49:59,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:49:59,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978512524] [2021-11-23 03:49:59,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978512524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:49:59,144 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:49:59,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 03:49:59,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351998056] [2021-11-23 03:49:59,145 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:49:59,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:49:59,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:49:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:49:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:49:59,146 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:50:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:00,880 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2021-11-23 03:50:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:50:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2021-11-23 03:50:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:00,882 INFO L225 Difference]: With dead ends: 163 [2021-11-23 03:50:00,883 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 03:50:00,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:50:00,884 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 33 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:00,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 618 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 03:50:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 03:50:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 153. [2021-11-23 03:50:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.6476190476190475) internal successors, (173), 146 states have internal predecessors, (173), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:50:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2021-11-23 03:50:00,893 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 27 [2021-11-23 03:50:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:00,894 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2021-11-23 03:50:00,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:50:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2021-11-23 03:50:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:50:00,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:00,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:50:00,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-23 03:50:01,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:50:01,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:50:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash -126277696, now seen corresponding path program 1 times [2021-11-23 03:50:01,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:50:01,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071066414] [2021-11-23 03:50:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:01,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:50:01,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:50:01,112 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:50:01,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:50:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:01,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:50:01,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:50:01,266 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 18 treesize of output 14 [2021-11-23 03:50:01,293 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 20 treesize of output 8 [2021-11-23 03:50:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:50:01,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:50:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:50:01,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:50:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071066414] [2021-11-23 03:50:01,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071066414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:01,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:01,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-23 03:50:01,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393680087] [2021-11-23 03:50:01,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:01,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:50:01,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:50:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:50:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:50:01,419 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-23 03:50:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:01,716 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2021-11-23 03:50:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:50:01,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-23 03:50:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:01,718 INFO L225 Difference]: With dead ends: 150 [2021-11-23 03:50:01,718 INFO L226 Difference]: Without dead ends: 150 [2021-11-23 03:50:01,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:50:01,719 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 5 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:01,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 701 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:50:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-23 03:50:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-11-23 03:50:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 143 states have internal predecessors, (168), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:50:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2021-11-23 03:50:01,726 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 27 [2021-11-23 03:50:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:01,726 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2021-11-23 03:50:01,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-23 03:50:01,726 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2021-11-23 03:50:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:50:01,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:01,728 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:50:01,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 03:50:01,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:50:01,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:50:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1096052090, now seen corresponding path program 1 times [2021-11-23 03:50:01,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:50:01,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644747744] [2021-11-23 03:50:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:01,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:50:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:50:01,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:50:01,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:50:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:50:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:50:02,055 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 [2021-11-23 03:50:02,253 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:50:02,253 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 25 treesize of output 32 [2021-11-23 03:50:02,461 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 03:50:02,462 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 3 case distinctions, treesize of input 34 treesize of output 45 [2021-11-23 03:50:02,547 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 23 treesize of output 19 [2021-11-23 03:50:02,749 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 11 [2021-11-23 03:50:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:50:02,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:50:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:50:26,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:50:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644747744] [2021-11-23 03:50:26,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644747744] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:50:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1163101701] [2021-11-23 03:50:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:26,349 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:50:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:50:26,350 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:50:26,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-23 03:50:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:26,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:50:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:50:26,543 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 [2021-11-23 03:50:26,672 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:50:26,672 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 26 treesize of output 33 [2021-11-23 03:50:30,966 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 03:50:30,966 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 3 case distinctions, treesize of input 30 treesize of output 41 [2021-11-23 03:50:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:50:31,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:50:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:50:48,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1163101701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:50:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042266926] [2021-11-23 03:50:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:48,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:50:48,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:50:48,284 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:50:48,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 03:50:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:50:48,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:50:48,361 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 [2021-11-23 03:50:48,538 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:50:48,539 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 25 treesize of output 32 [2021-11-23 03:50:48,811 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 03:50:48,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 56 [2021-11-23 03:50:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:50:49,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:52:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:29,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042266926] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:52:29,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:52:29,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 12, 11] total 30 [2021-11-23 03:52:29,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038490217] [2021-11-23 03:52:29,955 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:52:29,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 03:52:29,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:52:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 03:52:29,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=741, Unknown=48, NotChecked=0, Total=930 [2021-11-23 03:52:29,956 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 23 states have internal predecessors, (74), 5 states have call successors, (7), 5 states have call predecessors, (7), 10 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-23 03:52:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:30,641 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2021-11-23 03:52:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:52:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 23 states have internal predecessors, (74), 5 states have call successors, (7), 5 states have call predecessors, (7), 10 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 29 [2021-11-23 03:52:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:30,643 INFO L225 Difference]: With dead ends: 153 [2021-11-23 03:52:30,643 INFO L226 Difference]: Without dead ends: 153 [2021-11-23 03:52:30,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 122 SyntacticMatches, 18 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=185, Invalid=957, Unknown=48, NotChecked=0, Total=1190 [2021-11-23 03:52:30,644 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 11 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 456 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:30,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1084 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 456 Unchecked, 0.2s Time] [2021-11-23 03:52:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-23 03:52:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-23 03:52:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.619047619047619) internal successors, (170), 145 states have internal predecessors, (170), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:52:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2021-11-23 03:52:30,652 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 29 [2021-11-23 03:52:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:30,652 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2021-11-23 03:52:30,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 23 states have internal predecessors, (74), 5 states have call successors, (7), 5 states have call predecessors, (7), 10 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-23 03:52:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2021-11-23 03:52:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:52:30,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:30,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:30,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:52:30,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-23 03:52:31,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:52:31,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:52:31,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:52:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:31,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1096052089, now seen corresponding path program 1 times [2021-11-23 03:52:31,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:52:31,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253482329] [2021-11-23 03:52:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:31,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:52:31,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:52:31,261 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:52:31,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:52:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:31,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:52:31,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:52:31,369 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 [2021-11-23 03:52:31,379 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 [2021-11-23 03:52:31,724 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:52:31,725 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 35 treesize of output 37 [2021-11-23 03:52:31,760 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:52:31,761 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 29 treesize of output 36 [2021-11-23 03:52:34,063 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:52:34,063 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 45 treesize of output 47 [2021-11-23 03:52:34,099 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 03:52:34,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-11-23 03:52:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:52:34,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:52:52,584 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|)))))) is different from false [2021-11-23 03:53:03,226 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_165| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_165|)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_165| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_161| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_165| |v_ldv_zalloc_~size#1_161|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|)))))) is different from false [2021-11-23 03:53:05,045 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:53:05,045 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 69 treesize of output 1 [2021-11-23 03:53:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-23 03:53:05,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:53:05,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253482329] [2021-11-23 03:53:05,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253482329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:53:05,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1775560712] [2021-11-23 03:53:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:05,050 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:53:05,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:53:05,051 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:53:05,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-23 03:53:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:05,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:53:05,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:53:05,269 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 [2021-11-23 03:53:05,284 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 [2021-11-23 03:53:05,508 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:53:05,508 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 37 treesize of output 39 [2021-11-23 03:53:05,561 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:53:05,562 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 31 treesize of output 38 [2021-11-23 03:53:07,884 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:53:07,884 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 46 treesize of output 48 [2021-11-23 03:53:07,928 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 03:53:07,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-11-23 03:53:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:53:08,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:54:14,436 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_178| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_20| (_ BitVec 32))) (or (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|))))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_20|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_178|)))))) (and (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_173| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_178| |v_ldv_zalloc_~size#1_173|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_20|))) (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_178| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) is different from false [2021-11-23 03:54:15,942 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:54:15,942 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 73 treesize of output 1 [2021-11-23 03:54:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 2 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 03:54:15,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1775560712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:54:15,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104127240] [2021-11-23 03:54:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:15,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:54:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:54:15,954 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:54:15,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-23 03:54:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:16,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 03:54:16,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:54:16,044 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 [2021-11-23 03:54:16,052 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 [2021-11-23 03:54:16,434 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 03:54:16,434 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 [2021-11-23 03:54:16,485 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:54:16,485 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 26 treesize of output 33 [2021-11-23 03:54:16,923 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:54:16,923 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 47 treesize of output 49 [2021-11-23 03:54:16,961 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 03:54:16,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-23 03:54:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:54:17,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:54:29,709 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_23| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_187| (_ BitVec 32))) (or (and (forall ((|v_ldv_zalloc_~size#1_181| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_187| |v_ldv_zalloc_~size#1_181|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_23|))) (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11| (_ bv12 32)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32))) (and (or (exists ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11| (_ bv12 32)) (select (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_23|)))) (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_11| (_ bv12 32))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_187|))))) is different from true [2021-11-23 03:54:41,198 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) is different from false [2021-11-23 03:55:35,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_191| (_ BitVec 32))) (or (and (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_185| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_191| |v_ldv_zalloc_~size#1_185|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))) (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_191|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_191| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))))) is different from false [2021-11-23 03:55:37,074 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:55:37,075 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 124 treesize of output 1 [2021-11-23 03:55:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-23 03:55:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104127240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:37,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:55:37,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 11, 12, 12] total 31 [2021-11-23 03:55:37,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150405549] [2021-11-23 03:55:37,081 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:55:37,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 03:55:37,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:55:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 03:55:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=514, Unknown=52, NotChecked=318, Total=992 [2021-11-23 03:55:37,084 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 22 states have internal predecessors, (58), 5 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-23 03:55:39,694 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_191| (_ BitVec 32))) (or (and (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_185| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_191| |v_ldv_zalloc_~size#1_185|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))) (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_191|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_191| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))))) (= |c_#length| |c_old(#length)|) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_178| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_20| (_ BitVec 32))) (or (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|))))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_20|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_178|)))))) (and (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_173| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_178| |v_ldv_zalloc_~size#1_173|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_20|))) (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_8| (_ bv12 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_178| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_165| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_165|)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_165| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_161| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_165| |v_ldv_zalloc_~size#1_161|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|))))))) is different from false [2021-11-23 03:55:41,719 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ldv_zalloc_#in~size#1| (select |c_#length| |c_ldv_zalloc_#t~malloc13#1.base|)) (= (_ bv0 1) (select |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base|)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ldv_zalloc_#t~malloc13#1.base|)) (_ bv1 1))) (exists ((|ldv_zalloc_~size#1| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |c_ldv_zalloc_#t~malloc13#1.base| |ldv_zalloc_~size#1|))) (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32)) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|)))))) (= (store |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from false [2021-11-23 03:55:43,747 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#res#1.base|)))) (= (select |c_#length| |c_ldv_zalloc_#res#1.base|) |c_ldv_zalloc_#in~size#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ldv_zalloc_#res#1.base|))) (_ bv1 1))) (= (store |c_old(#valid)| |c_ldv_zalloc_#res#1.base| (_ bv1 1)) |c_#valid|) (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32)) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))) (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_16|)))))) (exists ((|ldv_zalloc_~size#1| (_ BitVec 32))) (= (store |c_old(#length)| |c_ldv_zalloc_#res#1.base| |ldv_zalloc_~size#1|) |c_#length|))) is different from false [2021-11-23 03:55:46,011 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ldv_zalloc_#in~size#1| (select |c_#length| |c_ldv_zalloc_#t~malloc13#1.base|)) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#res#1.base|)))) (= (select |c_#length| |c_ldv_zalloc_#res#1.base|) |c_ldv_zalloc_#in~size#1|) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ldv_zalloc_#t~malloc13#1.base|)) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ldv_zalloc_#res#1.base|))) (_ bv1 1))) (= (store |c_old(#valid)| |c_ldv_zalloc_#res#1.base| (_ bv1 1)) |c_#valid|) (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32)) (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32)) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) (exists ((|ldv_zalloc_~size#1| (_ BitVec 32))) (= (store |c_old(#length)| |c_ldv_zalloc_#res#1.base| |ldv_zalloc_~size#1|) |c_#length|))) is different from false [2021-11-23 03:55:48,034 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#res#1.base|)))) (= (select |c_#length| |c_ldv_zalloc_#res#1.base|) |c_ldv_zalloc_#in~size#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ldv_zalloc_#res#1.base|))) (_ bv1 1))) (= (store |c_old(#valid)| |c_ldv_zalloc_#res#1.base| (_ bv1 1)) |c_#valid|) (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32)) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_160|))))))))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32))) (forall ((|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|)))) (exists ((|v_ldv_zalloc_#t~malloc13#1.base_160| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_164| (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)))) (exists ((|v_ldv_zalloc_~size#1_160| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_156| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_12| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_164| |v_ldv_zalloc_~size#1_160|) |v_ldv_zalloc_#t~malloc13#1.base_160| |v_ldv_zalloc_~size#1_156|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_24|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_164| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_160|)))))))))))) (exists ((|ldv_zalloc_~size#1| (_ BitVec 32))) (= (store |c_old(#length)| |c_ldv_zalloc_#res#1.base| |ldv_zalloc_~size#1|) |c_#length|))) is different from false [2021-11-23 03:55:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:48,909 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2021-11-23 03:55:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:55:48,911 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 22 states have internal predecessors, (58), 5 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 29 [2021-11-23 03:55:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:48,913 INFO L225 Difference]: With dead ends: 185 [2021-11-23 03:55:48,913 INFO L226 Difference]: Without dead ends: 185 [2021-11-23 03:55:48,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 150.6s TimeCoverageRelationStatistics Valid=137, Invalid=606, Unknown=57, NotChecked=682, Total=1482 [2021-11-23 03:55:48,915 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 140 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1156 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:48,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1126 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 298 Invalid, 0 Unknown, 1156 Unchecked, 1.0s Time] [2021-11-23 03:55:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-23 03:55:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 155. [2021-11-23 03:55:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 108 states have (on average 1.6111111111111112) internal successors, (174), 147 states have internal predecessors, (174), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:55:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2021-11-23 03:55:48,920 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 29 [2021-11-23 03:55:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:48,921 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2021-11-23 03:55:48,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 22 states have internal predecessors, (58), 5 states have call successors, (9), 8 states have call predecessors, (9), 10 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-23 03:55:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2021-11-23 03:55:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 03:55:48,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:48,924 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:48,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:55:49,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-23 03:55:49,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:55:49,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:55:49,525 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:55:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1039070521, now seen corresponding path program 1 times [2021-11-23 03:55:49,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:55:49,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738044271] [2021-11-23 03:55:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:49,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:55:49,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:55:49,528 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:55:49,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:55:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:49,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:55:49,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:55:49,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:55:49,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:55:49,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738044271] [2021-11-23 03:55:49,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738044271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:49,744 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:49,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:55:49,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850717310] [2021-11-23 03:55:49,744 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:49,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:55:49,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:55:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:55:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:55:49,746 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:55:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:50,087 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2021-11-23 03:55:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:55:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-11-23 03:55:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:50,089 INFO L225 Difference]: With dead ends: 171 [2021-11-23 03:55:50,089 INFO L226 Difference]: Without dead ends: 171 [2021-11-23 03:55:50,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:55:50,090 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 109 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:50,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 238 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:55:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-23 03:55:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2021-11-23 03:55:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 108 states have (on average 1.6018518518518519) internal successors, (173), 146 states have internal predecessors, (173), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:55:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2021-11-23 03:55:50,098 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 31 [2021-11-23 03:55:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:50,098 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2021-11-23 03:55:50,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:55:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2021-11-23 03:55:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 03:55:50,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:50,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:50,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:55:50,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:55:50,309 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:55:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1039070520, now seen corresponding path program 1 times [2021-11-23 03:55:50,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:55:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951697316] [2021-11-23 03:55:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:50,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:55:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:55:50,311 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:55:50,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:55:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:50,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 03:55:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:50,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:50,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:55:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:51,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:55:51,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951697316] [2021-11-23 03:55:51,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951697316] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:51,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058064984] [2021-11-23 03:55:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:51,240 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:55:51,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:55:51,249 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:55:51,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-23 03:55:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:51,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:55:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:51,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:51,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:55:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:51,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058064984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:51,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030910553] [2021-11-23 03:55:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:51,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:55:51,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:55:51,766 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:55:51,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 03:55:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:51,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 03:55:51,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:51,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:51,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:55:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:52,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030910553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:52,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:55:52,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 13 [2021-11-23 03:55:52,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011978000] [2021-11-23 03:55:52,130 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:55:52,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:55:52,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:55:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:55:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:55:52,132 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 03:55:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:53,207 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2021-11-23 03:55:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:55:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2021-11-23 03:55:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:53,210 INFO L225 Difference]: With dead ends: 176 [2021-11-23 03:55:53,210 INFO L226 Difference]: Without dead ends: 176 [2021-11-23 03:55:53,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:55:53,211 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 582 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:53,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 619 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:55:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-23 03:55:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 149. [2021-11-23 03:55:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 141 states have internal predecessors, (166), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:55:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2021-11-23 03:55:53,219 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 31 [2021-11-23 03:55:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:53,220 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2021-11-23 03:55:53,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 03:55:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2021-11-23 03:55:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:55:53,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:53,226 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:53,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:55:53,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-23 03:55:53,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-23 03:55:53,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 03:55:53,840 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:55:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357432, now seen corresponding path program 1 times [2021-11-23 03:55:53,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:55:53,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539186937] [2021-11-23 03:55:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:53,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:55:53,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:55:53,842 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:55:53,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:55:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:53,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 03:55:53,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:54,243 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 21 treesize of output 17 [2021-11-23 03:55:54,336 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 20 treesize of output 12 [2021-11-23 03:55:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:54,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:55:54,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:55:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539186937] [2021-11-23 03:55:54,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539186937] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:55:54,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:55:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2021-11-23 03:55:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123673992] [2021-11-23 03:55:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:54,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:55:54,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:55:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:55:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:54,781 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:55:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:55,891 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-11-23 03:55:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:55:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-11-23 03:55:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:55,893 INFO L225 Difference]: With dead ends: 165 [2021-11-23 03:55:55,893 INFO L226 Difference]: Without dead ends: 165 [2021-11-23 03:55:55,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:55:55,894 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 127 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:55,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 437 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:55:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-23 03:55:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2021-11-23 03:55:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 105 states have (on average 1.5714285714285714) internal successors, (165), 140 states have internal predecessors, (165), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:55:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2021-11-23 03:55:55,901 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 33 [2021-11-23 03:55:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2021-11-23 03:55:55,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:55:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2021-11-23 03:55:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:55:55,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:55,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:55,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-23 03:55:56,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:55:56,127 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:55:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357431, now seen corresponding path program 1 times [2021-11-23 03:55:56,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:55:56,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961566873] [2021-11-23 03:55:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:56,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:55:56,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:55:56,130 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:55:56,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 03:55:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:56,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 03:55:56,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:56,668 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 19 treesize of output 15 [2021-11-23 03:55:56,680 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 [2021-11-23 03:55:56,817 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 23 [2021-11-23 03:55:56,820 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 20 treesize of output 12 [2021-11-23 03:55:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:56,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:57,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:55:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:58,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:55:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961566873] [2021-11-23 03:55:58,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961566873] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [217814997] [2021-11-23 03:55:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:58,210 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:55:58,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:55:58,211 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:55:58,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-23 03:55:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:58,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 03:55:58,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:58,555 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 19 treesize of output 15 [2021-11-23 03:55:58,564 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 [2021-11-23 03:55:58,595 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 31 treesize of output 23 [2021-11-23 03:55:58,599 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 20 treesize of output 12 [2021-11-23 03:55:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:58,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:58,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:55:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:59,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [217814997] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570190241] [2021-11-23 03:55:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:59,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:55:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:55:59,027 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:55:59,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 03:55:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:59,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 03:55:59,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:55:59,349 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 19 treesize of output 15 [2021-11-23 03:55:59,363 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 [2021-11-23 03:55:59,411 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 23 [2021-11-23 03:55:59,416 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 20 treesize of output 12 [2021-11-23 03:55:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:59,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:55:59,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:55:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:55:59,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570190241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:55:59,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:55:59,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12, 10, 12, 10] total 21 [2021-11-23 03:55:59,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173664101] [2021-11-23 03:55:59,921 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:55:59,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 03:55:59,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:55:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 03:55:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:55:59,922 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 19 states have internal predecessors, (53), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 03:56:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:02,311 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-11-23 03:56:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:56:02,314 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 19 states have internal predecessors, (53), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2021-11-23 03:56:02,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:02,316 INFO L225 Difference]: With dead ends: 173 [2021-11-23 03:56:02,316 INFO L226 Difference]: Without dead ends: 173 [2021-11-23 03:56:02,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:56:02,317 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 728 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:02,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 815 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:56:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-23 03:56:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2021-11-23 03:56:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 134 states have internal predecessors, (156), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:56:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 164 transitions. [2021-11-23 03:56:02,323 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 164 transitions. Word has length 33 [2021-11-23 03:56:02,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:02,324 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 164 transitions. [2021-11-23 03:56:02,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 19 states have internal predecessors, (53), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 03:56:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 164 transitions. [2021-11-23 03:56:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:56:02,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:02,325 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:02,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-23 03:56:02,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-23 03:56:02,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-23 03:56:02,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 03:56:02,938 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:56:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1120570930, now seen corresponding path program 1 times [2021-11-23 03:56:02,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:56:02,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799826353] [2021-11-23 03:56:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:02,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:56:02,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:56:02,940 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:56:02,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 03:56:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:03,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 03:56:03,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:56:03,081 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 [2021-11-23 03:56:03,406 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:56:03,406 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 25 treesize of output 32 [2021-11-23 03:56:03,799 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 03:56:03,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 52 [2021-11-23 03:56:03,988 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 31 treesize of output 27 [2021-11-23 03:56:04,597 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-23 03:56:04,598 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 1 case distinctions, treesize of input 75 treesize of output 47 [2021-11-23 03:56:04,687 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 [2021-11-23 03:56:04,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:56:04,698 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 66 treesize of output 57 [2021-11-23 03:56:05,043 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 113 treesize of output 105 [2021-11-23 03:56:05,465 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:56:05,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 62 [2021-11-23 03:56:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:56:05,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:56:18,685 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_1))))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))))))))))))))) is different from false [2021-11-23 03:57:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:57:28,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:57:28,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799826353] [2021-11-23 03:57:28,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799826353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:57:28,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485374847] [2021-11-23 03:57:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:28,982 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:57:28,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:57:28,983 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:57:28,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-23 03:57:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:29,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-23 03:57:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:57:29,197 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 [2021-11-23 03:57:29,376 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:57:29,376 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 28 treesize of output 35 [2021-11-23 03:57:29,659 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 03:57:29,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 54 [2021-11-23 03:57:29,807 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 31 treesize of output 27 [2021-11-23 03:57:30,166 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-23 03:57:30,166 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 1 case distinctions, treesize of input 75 treesize of output 47 [2021-11-23 03:57:30,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:57:30,291 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 68 treesize of output 59 [2021-11-23 03:57:30,333 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 [2021-11-23 03:57:30,540 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 113 treesize of output 105 [2021-11-23 03:57:30,787 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:57:30,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 62 [2021-11-23 03:57:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:57:31,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:58:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:58:35,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [485374847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:58:35,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006704279] [2021-11-23 03:58:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:35,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:58:35,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:58:35,772 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:58:35,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-23 03:58:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:35,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-23 03:58:35,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:58:35,871 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 [2021-11-23 03:58:36,073 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:58:36,074 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 27 treesize of output 34 [2021-11-23 03:58:36,320 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 03:58:36,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 53 [2021-11-23 03:58:36,545 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 31 treesize of output 27 [2021-11-23 03:58:37,019 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-23 03:58:37,019 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 1 case distinctions, treesize of input 75 treesize of output 47 [2021-11-23 03:58:37,197 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 [2021-11-23 03:58:37,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:58:37,220 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 66 treesize of output 57 [2021-11-23 03:58:37,377 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 113 treesize of output 105 [2021-11-23 03:58:37,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:58:37,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 62 [2021-11-23 03:58:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:58:37,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:58:40,130 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_3)))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))))))))))) (_ bv1 1)))) is different from false [2021-11-23 03:59:10,711 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_299| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_299|)))) (and (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_27| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_299| (_ bv1 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_27|)))))))))))))))) (_ bv1 1))) (exists ((|v_ULTIMATE.start_entry_point_#t~ret55#1.base_70| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret55#1.base_70| (_ bv1 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_27|)))))))))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret55#1.base_70|))))))) (or (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_299| (_ bv1 1)) v_DerPreprocessor_1))))))))))))))) (_ bv1 1)))) (and (exists ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_299| (_ bv1 1)) v_DerPreprocessor_1)))))))))))))))))))))))))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_299|))))))))) is different from true [2021-11-23 03:59:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:59:11,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006704279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:59:11,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:59:11,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 20, 17, 20, 17] total 39 [2021-11-23 03:59:11,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551920972] [2021-11-23 03:59:11,444 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:59:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 03:59:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:59:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 03:59:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1190, Unknown=28, NotChecked=216, Total=1560 [2021-11-23 03:59:11,447 INFO L87 Difference]: Start difference. First operand 142 states and 164 transitions. Second operand has 40 states, 39 states have (on average 1.564102564102564) internal successors, (61), 32 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 03:59:14,018 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_ldv_zalloc_#t~malloc13#1.base_299| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_299|)))) (and (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_27| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_299| (_ bv1 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_27|)))))))))))))))) (_ bv1 1))) (exists ((|v_ULTIMATE.start_entry_point_#t~ret55#1.base_70| (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret55#1.base_70| (_ bv1 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_27|)))))))))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret55#1.base_70|))))))) (or (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_299| (_ bv1 1)) v_DerPreprocessor_1))))))))))))))) (_ bv1 1)))) (and (exists ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_299| (_ bv1 1)) v_DerPreprocessor_1)))))))))))))))))))))))))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_299|)))))))))) is different from false [2021-11-23 03:59:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:15,532 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2021-11-23 03:59:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 03:59:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.564102564102564) internal successors, (61), 32 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2021-11-23 03:59:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:15,534 INFO L225 Difference]: With dead ends: 141 [2021-11-23 03:59:15,534 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 03:59:15,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 136 SyntacticMatches, 26 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 176.2s TimeCoverageRelationStatistics Valid=159, Invalid=1388, Unknown=29, NotChecked=316, Total=1892 [2021-11-23 03:59:15,536 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 20 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 876 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:15,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1652 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 876 Unchecked, 1.4s Time] [2021-11-23 03:59:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 03:59:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-23 03:59:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.5346534653465347) internal successors, (155), 133 states have internal predecessors, (155), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:59:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2021-11-23 03:59:15,546 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 34 [2021-11-23 03:59:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:15,547 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2021-11-23 03:59:15,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.564102564102564) internal successors, (61), 32 states have internal predecessors, (61), 4 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 03:59:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2021-11-23 03:59:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:59:15,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:15,548 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:59:15,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-23 03:59:15,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 03:59:15,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-23 03:59:16,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:59:16,151 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-23 03:59:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:16,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1120570929, now seen corresponding path program 1 times [2021-11-23 03:59:16,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:59:16,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81906516] [2021-11-23 03:59:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:16,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:59:16,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:59:16,153 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:59:16,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 03:59:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:59:16,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-23 03:59:16,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:59:16,306 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 [2021-11-23 03:59:16,632 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:59:16,632 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 26 treesize of output 33 [2021-11-23 03:59:16,868 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 [2021-11-23 03:59:17,140 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:59:17,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 47 [2021-11-23 03:59:17,312 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 [2021-11-23 03:59:17,326 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 27 treesize of output 23 [2021-11-23 03:59:17,870 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-23 03:59:17,870 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 1 case distinctions, treesize of input 139 treesize of output 93 [2021-11-23 03:59:17,899 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-23 03:59:17,899 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 1 case distinctions, treesize of input 90 treesize of output 74 [2021-11-23 03:59:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:59:17,997 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 63 treesize of output 54 [2021-11-23 03:59:18,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:59:18,004 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 86 treesize of output 85 [2021-11-23 03:59:18,771 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-23 03:59:18,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-23 03:59:18,798 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-23 03:59:18,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-23 03:59:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:59:18,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:59:37,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-11-23 03:59:40,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2021-11-23 03:59:51,961 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_309| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_309|)))) (let ((.cse1 (bvadd (_ bv16 32) |c_ldv_zalloc_#res#1.offset|))) (let ((.cse0 (bvule .cse1 (_ bv9 32)))) (and (or (and (= |v_ldv_zalloc_#t~malloc13#1.base_309| |c_ldv_zalloc_#res#1.base|) .cse0) (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32))) (or (exists ((|v_ldv_zalloc_#t~malloc13#1.base_309| (_ BitVec 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |c_ldv_zalloc_#res#1.base| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_309|)))))) .cse0) (or (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#res#1.base|)))) .cse0) (bvule (bvadd (_ bv15 32) |c_ldv_zalloc_#res#1.offset|) .cse1)))))) is different from false [2021-11-23 03:59:54,271 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_zalloc_#t~malloc13#1.base_309| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_309|)))) (let ((.cse1 (bvadd (_ bv16 32) |c_ldv_zalloc_#t~malloc13#1.offset|))) (let ((.cse0 (bvule .cse1 (_ bv9 32)))) (and (or (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base|)))) .cse0) (bvule (bvadd |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv15 32)) .cse1) (or (exists ((|v_ldv_zalloc_#t~malloc13#1.base_309| (_ BitVec 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_309|)))))) .cse0) (or (and .cse0 (= |c_ldv_zalloc_#t~malloc13#1.base| |v_ldv_zalloc_#t~malloc13#1.base_309|)) (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32)))))))) is different from false [2021-11-23 04:00:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-23 04:00:08,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 04:00:08,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81906516] [2021-11-23 04:00:08,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81906516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 04:00:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839159852] [2021-11-23 04:00:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:08,255 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 04:00:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 04:00:08,256 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 04:00:08,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-23 04:00:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:08,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-23 04:00:08,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 04:00:08,538 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 [2021-11-23 04:00:08,726 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 04:00:08,726 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 27 treesize of output 34 [2021-11-23 04:00:08,892 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 [2021-11-23 04:00:09,061 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 04:00:09,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 50 [2021-11-23 04:00:09,113 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 27 treesize of output 23 [2021-11-23 04:00:09,139 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 [2021-11-23 04:00:09,728 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-23 04:00:09,729 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 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-23 04:00:09,768 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-23 04:00:09,768 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 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-23 04:00:09,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 04:00:09,868 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 63 treesize of output 54 [2021-11-23 04:00:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 04:00:09,875 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 86 treesize of output 85 [2021-11-23 04:00:10,112 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-23 04:00:10,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-23 04:00:10,136 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-23 04:00:10,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-23 04:00:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 04:00:10,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 04:01:07,651 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse1 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_7))))) (store .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3)))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse8)) (.cse7 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse6 (store (select |c_#memory_$Pointer$.offset| .cse6) .cse7 v_DerPreprocessor_7)))) (store .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse8)) (select |c_#length| (select (select (let ((.cse9 (store |c_#memory_$Pointer$.base| .cse6 (store (select |c_#memory_$Pointer$.base| .cse6) .cse7 v_DerPreprocessor_6)))) (store .cse9 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse9 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse5 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse8))))))) is different from false [2021-11-23 04:01:12,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 72 [2021-11-23 04:01:40,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 139 [2021-11-23 04:02:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:03,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839159852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 04:02:03,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549617446] [2021-11-23 04:02:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:03,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:02:03,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 04:02:03,890 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 04:02:03,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd4429a-ac74-43a8-8e18-65d54949bb13/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-23 04:02:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:04,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-23 04:02:04,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 04:02:04,013 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 [2021-11-23 04:02:04,190 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 04:02:04,190 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 26 treesize of output 33 [2021-11-23 04:02:04,366 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 [2021-11-23 04:02:04,487 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 04:02:04,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 48 [2021-11-23 04:02:04,537 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 [2021-11-23 04:02:04,549 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 27 treesize of output 23 [2021-11-23 04:02:04,846 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-23 04:02:04,846 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 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-23 04:02:04,881 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-23 04:02:04,882 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 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-23 04:02:04,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 04:02:04,979 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 63 treesize of output 54 [2021-11-23 04:02:05,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 04:02:05,009 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 86 treesize of output 85 [2021-11-23 04:02:05,260 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-23 04:02:05,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-23 04:02:05,286 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-23 04:02:05,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-23 04:02:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 04:02:05,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 04:02:07,538 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_9 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_9)))) (store .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_9 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse4 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (bvule (bvadd (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse4 v_DerPreprocessor_9)))) (store .cse2 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse2 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse5) (_ bv8 32)) (select |c_#length| (select (select (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse4 v_DerPreprocessor_8)))) (store .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse3 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse5)))))) is different from false