./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 12:50:32,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 12:50:32,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 12:50:32,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 12:50:32,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 12:50:32,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 12:50:32,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 12:50:32,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 12:50:32,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 12:50:32,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 12:50:32,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 12:50:32,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 12:50:32,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 12:50:32,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 12:50:32,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 12:50:32,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 12:50:32,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 12:50:32,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 12:50:32,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 12:50:32,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 12:50:32,478 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 12:50:32,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 12:50:32,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 12:50:32,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 12:50:32,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 12:50:32,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 12:50:32,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 12:50:32,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 12:50:32,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 12:50:32,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 12:50:32,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 12:50:32,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 12:50:32,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 12:50:32,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 12:50:32,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 12:50:32,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 12:50:32,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 12:50:32,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 12:50:32,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 12:50:32,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 12:50:32,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 12:50:32,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 12:50:32,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 12:50:32,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 12:50:32,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 12:50:32,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 12:50:32,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 12:50:32,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 12:50:32,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 12:50:32,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 12:50:32,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 12:50:32,535 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 12:50:32,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 12:50:32,536 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 12:50:32,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 12:50:32,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 12:50:32,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 12:50:32,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 12:50:32,537 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 12:50:32,537 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 12:50:32,537 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 12:50:32,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 12:50:32,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 12:50:32,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 12:50:32,538 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 12:50:32,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 12:50:32,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 12:50:32,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 12:50:32,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 12:50:32,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 12:50:32,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 12:50:32,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 12:50:32,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 12:50:32,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2022-07-20 12:50:32,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 12:50:32,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 12:50:32,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 12:50:32,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 12:50:32,788 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 12:50:32,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-07-20 12:50:32,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76edc5deb/b32c7a27c8ab43379a10f516d8ca3922/FLAGe38adf006 [2022-07-20 12:50:33,364 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 12:50:33,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-07-20 12:50:33,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76edc5deb/b32c7a27c8ab43379a10f516d8ca3922/FLAGe38adf006 [2022-07-20 12:50:33,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76edc5deb/b32c7a27c8ab43379a10f516d8ca3922 [2022-07-20 12:50:33,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 12:50:33,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 12:50:33,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 12:50:33,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 12:50:33,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 12:50:33,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:50:33" (1/1) ... [2022-07-20 12:50:33,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321e8dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:33, skipping insertion in model container [2022-07-20 12:50:33,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:50:33" (1/1) ... [2022-07-20 12:50:33,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 12:50:33,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 12:50:34,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-07-20 12:50:34,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 12:50:34,137 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-20 12:50:34,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6974d38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:34, skipping insertion in model container [2022-07-20 12:50:34,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 12:50:34,138 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-20 12:50:34,140 INFO L158 Benchmark]: Toolchain (without parser) took 478.93ms. Allocated memory is still 125.8MB. Free memory was 91.7MB in the beginning and 94.6MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-20 12:50:34,141 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 12:50:34,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.91ms. Allocated memory is still 125.8MB. Free memory was 91.7MB in the beginning and 94.6MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-20 12:50:34,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.91ms. Allocated memory is still 125.8MB. Free memory was 91.7MB in the beginning and 94.6MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 12:50:35,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 12:50:35,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 12:50:35,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 12:50:35,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 12:50:35,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 12:50:35,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 12:50:35,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 12:50:35,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 12:50:35,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 12:50:35,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 12:50:35,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 12:50:35,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 12:50:35,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 12:50:35,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 12:50:35,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 12:50:35,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 12:50:35,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 12:50:35,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 12:50:35,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 12:50:35,964 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 12:50:35,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 12:50:35,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 12:50:35,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 12:50:35,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 12:50:35,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 12:50:35,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 12:50:35,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 12:50:35,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 12:50:35,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 12:50:35,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 12:50:35,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 12:50:35,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 12:50:35,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 12:50:35,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 12:50:35,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 12:50:35,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 12:50:35,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 12:50:35,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 12:50:35,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 12:50:35,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 12:50:35,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 12:50:35,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 12:50:36,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 12:50:36,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 12:50:36,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 12:50:36,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 12:50:36,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 12:50:36,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 12:50:36,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 12:50:36,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 12:50:36,034 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 12:50:36,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 12:50:36,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 12:50:36,036 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 12:50:36,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 12:50:36,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 12:50:36,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 12:50:36,037 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 12:50:36,037 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 12:50:36,037 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 12:50:36,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 12:50:36,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 12:50:36,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 12:50:36,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 12:50:36,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 12:50:36,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 12:50:36,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 12:50:36,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 12:50:36,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 12:50:36,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 12:50:36,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 12:50:36,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 12:50:36,040 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 12:50:36,040 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 12:50:36,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 12:50:36,040 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2022-07-20 12:50:36,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 12:50:36,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 12:50:36,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 12:50:36,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 12:50:36,357 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 12:50:36,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-07-20 12:50:36,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5726875d6/88fcb20ecc444a3fbefbd3920baa79cf/FLAG00e53dd07 [2022-07-20 12:50:36,967 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 12:50:36,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2022-07-20 12:50:36,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5726875d6/88fcb20ecc444a3fbefbd3920baa79cf/FLAG00e53dd07 [2022-07-20 12:50:37,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5726875d6/88fcb20ecc444a3fbefbd3920baa79cf [2022-07-20 12:50:37,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 12:50:37,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 12:50:37,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 12:50:37,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 12:50:37,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 12:50:37,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:37,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4924ff01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37, skipping insertion in model container [2022-07-20 12:50:37,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:37,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 12:50:37,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 12:50:37,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-07-20 12:50:37,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 12:50:37,802 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 12:50:37,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 12:50:37,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-07-20 12:50:37,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 12:50:37,896 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 12:50:37,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2022-07-20 12:50:37,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 12:50:37,993 INFO L208 MainTranslator]: Completed translation [2022-07-20 12:50:37,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37 WrapperNode [2022-07-20 12:50:37,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 12:50:37,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 12:50:37,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 12:50:37,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 12:50:38,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,082 INFO L137 Inliner]: procedures = 180, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 628 [2022-07-20 12:50:38,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 12:50:38,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 12:50:38,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 12:50:38,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 12:50:38,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 12:50:38,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 12:50:38,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 12:50:38,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 12:50:38,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (1/1) ... [2022-07-20 12:50:38,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 12:50:38,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 12:50:38,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 12:50:38,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 12:50:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 12:50:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 12:50:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-20 12:50:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-20 12:50:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 12:50:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 12:50:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 12:50:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 12:50:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 12:50:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 12:50:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 12:50:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 12:50:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 12:50:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 12:50:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 12:50:38,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 12:50:38,469 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 12:50:38,470 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 12:50:38,473 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 12:50:40,921 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 12:50:40,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 12:50:40,937 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2022-07-20 12:50:40,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:50:40 BoogieIcfgContainer [2022-07-20 12:50:40,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 12:50:40,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 12:50:40,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 12:50:40,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 12:50:40,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:50:37" (1/3) ... [2022-07-20 12:50:40,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af5adcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:50:40, skipping insertion in model container [2022-07-20 12:50:40,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:50:37" (2/3) ... [2022-07-20 12:50:40,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af5adcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:50:40, skipping insertion in model container [2022-07-20 12:50:40,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:50:40" (3/3) ... [2022-07-20 12:50:40,948 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-1.i [2022-07-20 12:50:40,960 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 12:50:40,960 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2022-07-20 12:50:41,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 12:50:41,039 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59b3235e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b622de8 [2022-07-20 12:50:41,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2022-07-20 12:50:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 325 states have (on average 2.230769230769231) internal successors, (725), 662 states have internal predecessors, (725), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 12:50:41,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:41,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 12:50:41,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:41,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:41,058 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-07-20 12:50:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015488490] [2022-07-20 12:50:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:41,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:41,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:41,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:41,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 12:50:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:41,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 12:50:41,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:41,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:41,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:41,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015488490] [2022-07-20 12:50:41,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015488490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:41,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:41,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 12:50:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101756000] [2022-07-20 12:50:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 12:50:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 12:50:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 12:50:41,255 INFO L87 Difference]: Start difference. First operand has 668 states, 325 states have (on average 2.230769230769231) internal successors, (725), 662 states have internal predecessors, (725), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:41,326 INFO L93 Difference]: Finished difference Result 659 states and 706 transitions. [2022-07-20 12:50:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 12:50:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-20 12:50:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:41,345 INFO L225 Difference]: With dead ends: 659 [2022-07-20 12:50:41,346 INFO L226 Difference]: Without dead ends: 657 [2022-07-20 12:50:41,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 12:50:41,352 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:41,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 12:50:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-07-20 12:50:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-07-20 12:50:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 320 states have (on average 2.11875) internal successors, (678), 651 states have internal predecessors, (678), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 704 transitions. [2022-07-20 12:50:41,429 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 704 transitions. Word has length 5 [2022-07-20 12:50:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:41,429 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 704 transitions. [2022-07-20 12:50:41,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 704 transitions. [2022-07-20 12:50:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 12:50:41,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:41,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 12:50:41,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:41,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:41,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-07-20 12:50:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979131464] [2022-07-20 12:50:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:41,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:41,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:41,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 12:50:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:41,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 12:50:41,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:41,754 INFO L390 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 [2022-07-20 12:50:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:41,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:41,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:41,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979131464] [2022-07-20 12:50:41,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979131464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:41,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:41,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 12:50:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932441347] [2022-07-20 12:50:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:41,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 12:50:41,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 12:50:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:41,781 INFO L87 Difference]: Start difference. First operand 657 states and 704 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:42,734 INFO L93 Difference]: Finished difference Result 615 states and 663 transitions. [2022-07-20 12:50:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 12:50:42,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-20 12:50:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:42,738 INFO L225 Difference]: With dead ends: 615 [2022-07-20 12:50:42,738 INFO L226 Difference]: Without dead ends: 615 [2022-07-20 12:50:42,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:42,740 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 596 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:42,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 351 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 12:50:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-20 12:50:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 608. [2022-07-20 12:50:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 320 states have (on average 1.965625) internal successors, (629), 602 states have internal predecessors, (629), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 655 transitions. [2022-07-20 12:50:42,757 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 655 transitions. Word has length 5 [2022-07-20 12:50:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:42,757 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 655 transitions. [2022-07-20 12:50:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 655 transitions. [2022-07-20 12:50:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 12:50:42,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:42,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 12:50:42,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:42,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:42,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-07-20 12:50:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:42,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554926120] [2022-07-20 12:50:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:42,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:42,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:42,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:42,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 12:50:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:43,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 12:50:43,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:43,056 INFO L390 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 [2022-07-20 12:50:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:43,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:43,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554926120] [2022-07-20 12:50:43,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554926120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:43,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 12:50:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383800888] [2022-07-20 12:50:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 12:50:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 12:50:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:43,077 INFO L87 Difference]: Start difference. First operand 608 states and 655 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:44,117 INFO L93 Difference]: Finished difference Result 675 states and 726 transitions. [2022-07-20 12:50:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 12:50:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-20 12:50:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:44,120 INFO L225 Difference]: With dead ends: 675 [2022-07-20 12:50:44,120 INFO L226 Difference]: Without dead ends: 675 [2022-07-20 12:50:44,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:44,121 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 254 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:44,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 752 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-20 12:50:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-07-20 12:50:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 630. [2022-07-20 12:50:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 352 states have (on average 1.9460227272727273) internal successors, (685), 624 states have internal predecessors, (685), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 711 transitions. [2022-07-20 12:50:44,135 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 711 transitions. Word has length 5 [2022-07-20 12:50:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:44,135 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 711 transitions. [2022-07-20 12:50:44,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 711 transitions. [2022-07-20 12:50:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-20 12:50:44,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:44,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-20 12:50:44,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-20 12:50:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:44,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1156735106, now seen corresponding path program 1 times [2022-07-20 12:50:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235829397] [2022-07-20 12:50:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:44,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:44,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:44,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:44,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 12:50:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:44,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 12:50:44,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:44,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:44,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235829397] [2022-07-20 12:50:44,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235829397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:44,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:44,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 12:50:44,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458062902] [2022-07-20 12:50:44,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:44,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 12:50:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 12:50:44,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:44,425 INFO L87 Difference]: Start difference. First operand 630 states and 711 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:44,500 INFO L93 Difference]: Finished difference Result 1211 states and 1353 transitions. [2022-07-20 12:50:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 12:50:44,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-20 12:50:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:44,510 INFO L225 Difference]: With dead ends: 1211 [2022-07-20 12:50:44,510 INFO L226 Difference]: Without dead ends: 1211 [2022-07-20 12:50:44,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:44,511 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 569 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:44,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1505 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 12:50:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-07-20 12:50:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 631. [2022-07-20 12:50:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 353 states have (on average 1.9433427762039661) internal successors, (686), 625 states have internal predecessors, (686), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 712 transitions. [2022-07-20 12:50:44,529 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 712 transitions. Word has length 6 [2022-07-20 12:50:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:44,530 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 712 transitions. [2022-07-20 12:50:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 712 transitions. [2022-07-20 12:50:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-20 12:50:44,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:44,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:44,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:44,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:44,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:44,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-07-20 12:50:44,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:44,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557712518] [2022-07-20 12:50:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:44,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:44,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:44,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 12:50:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:44,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 12:50:44,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:44,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:44,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:44,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557712518] [2022-07-20 12:50:44,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557712518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:44,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:44,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 12:50:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324105799] [2022-07-20 12:50:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 12:50:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 12:50:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:44,866 INFO L87 Difference]: Start difference. First operand 631 states and 712 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:44,898 INFO L93 Difference]: Finished difference Result 595 states and 675 transitions. [2022-07-20 12:50:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 12:50:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-20 12:50:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:44,901 INFO L225 Difference]: With dead ends: 595 [2022-07-20 12:50:44,901 INFO L226 Difference]: Without dead ends: 595 [2022-07-20 12:50:44,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:44,902 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 563 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:44,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 627 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 12:50:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-20 12:50:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 589. [2022-07-20 12:50:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 335 states have (on average 1.9194029850746268) internal successors, (643), 583 states have internal predecessors, (643), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 669 transitions. [2022-07-20 12:50:44,913 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 669 transitions. Word has length 11 [2022-07-20 12:50:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:44,913 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 669 transitions. [2022-07-20 12:50:44,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 669 transitions. [2022-07-20 12:50:44,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 12:50:44,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:44,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:44,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:45,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:45,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-07-20 12:50:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:45,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147521402] [2022-07-20 12:50:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:45,127 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:45,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 12:50:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:45,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 12:50:45,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:45,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:45,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:45,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147521402] [2022-07-20 12:50:45,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147521402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:45,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:45,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 12:50:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725097801] [2022-07-20 12:50:45,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 12:50:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 12:50:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:45,244 INFO L87 Difference]: Start difference. First operand 589 states and 669 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:45,301 INFO L93 Difference]: Finished difference Result 574 states and 647 transitions. [2022-07-20 12:50:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 12:50:45,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-20 12:50:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:45,304 INFO L225 Difference]: With dead ends: 574 [2022-07-20 12:50:45,304 INFO L226 Difference]: Without dead ends: 574 [2022-07-20 12:50:45,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:45,306 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 534 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:45,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1127 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 12:50:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-07-20 12:50:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 567. [2022-07-20 12:50:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 327 states have (on average 1.8776758409785932) internal successors, (614), 561 states have internal predecessors, (614), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 640 transitions. [2022-07-20 12:50:45,316 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 640 transitions. Word has length 13 [2022-07-20 12:50:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:45,317 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 640 transitions. [2022-07-20 12:50:45,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 640 transitions. [2022-07-20 12:50:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 12:50:45,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:45,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:45,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:45,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:45,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-07-20 12:50:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513339788] [2022-07-20 12:50:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:45,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:45,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:45,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:45,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 12:50:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:45,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 12:50:45,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:45,643 INFO L390 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 [2022-07-20 12:50:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:45,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:45,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:45,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513339788] [2022-07-20 12:50:45,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513339788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:45,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:45,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 12:50:45,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669738492] [2022-07-20 12:50:45,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:45,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 12:50:45,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 12:50:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:45,702 INFO L87 Difference]: Start difference. First operand 567 states and 640 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:46,615 INFO L93 Difference]: Finished difference Result 611 states and 705 transitions. [2022-07-20 12:50:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 12:50:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-20 12:50:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:46,619 INFO L225 Difference]: With dead ends: 611 [2022-07-20 12:50:46,619 INFO L226 Difference]: Without dead ends: 611 [2022-07-20 12:50:46,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:46,619 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 960 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:46,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 385 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 12:50:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-07-20 12:50:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 563. [2022-07-20 12:50:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 327 states have (on average 1.8654434250764527) internal successors, (610), 557 states have internal predecessors, (610), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 636 transitions. [2022-07-20 12:50:46,633 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 636 transitions. Word has length 27 [2022-07-20 12:50:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:46,633 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 636 transitions. [2022-07-20 12:50:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 636 transitions. [2022-07-20 12:50:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 12:50:46,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:46,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:46,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-20 12:50:46,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:46,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-07-20 12:50:46,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:46,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710039624] [2022-07-20 12:50:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:46,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:46,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:46,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:46,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 12:50:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:46,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 12:50:46,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:46,957 INFO L390 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 [2022-07-20 12:50:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:47,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:47,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:47,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710039624] [2022-07-20 12:50:47,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710039624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:47,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:47,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 12:50:47,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125444012] [2022-07-20 12:50:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:47,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 12:50:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 12:50:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:47,080 INFO L87 Difference]: Start difference. First operand 563 states and 636 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:48,373 INFO L93 Difference]: Finished difference Result 645 states and 708 transitions. [2022-07-20 12:50:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 12:50:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-20 12:50:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:48,376 INFO L225 Difference]: With dead ends: 645 [2022-07-20 12:50:48,376 INFO L226 Difference]: Without dead ends: 645 [2022-07-20 12:50:48,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:48,377 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 351 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:48,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 923 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-20 12:50:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-20 12:50:48,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 559. [2022-07-20 12:50:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 327 states have (on average 1.853211009174312) internal successors, (606), 553 states have internal predecessors, (606), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 632 transitions. [2022-07-20 12:50:48,402 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 632 transitions. Word has length 27 [2022-07-20 12:50:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:48,402 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 632 transitions. [2022-07-20 12:50:48,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 632 transitions. [2022-07-20 12:50:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-20 12:50:48,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:48,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:48,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:48,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:48,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-07-20 12:50:48,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:48,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272169975] [2022-07-20 12:50:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:48,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:48,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 12:50:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:48,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 12:50:48,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:48,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:48,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:48,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272169975] [2022-07-20 12:50:48,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272169975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:48,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:48,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 12:50:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284353964] [2022-07-20 12:50:48,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 12:50:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 12:50:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:48,794 INFO L87 Difference]: Start difference. First operand 559 states and 632 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:48,834 INFO L93 Difference]: Finished difference Result 559 states and 628 transitions. [2022-07-20 12:50:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 12:50:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-20 12:50:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:48,837 INFO L225 Difference]: With dead ends: 559 [2022-07-20 12:50:48,837 INFO L226 Difference]: Without dead ends: 559 [2022-07-20 12:50:48,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:48,838 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 510 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:48,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1105 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 12:50:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-07-20 12:50:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 553. [2022-07-20 12:50:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 321 states have (on average 1.8566978193146417) internal successors, (596), 547 states have internal predecessors, (596), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 622 transitions. [2022-07-20 12:50:48,848 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 622 transitions. Word has length 42 [2022-07-20 12:50:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 622 transitions. [2022-07-20 12:50:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 622 transitions. [2022-07-20 12:50:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-20 12:50:48,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:48,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:48,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:49,061 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-07-20 12:50:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:49,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850840864] [2022-07-20 12:50:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:49,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:49,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:49,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:49,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 12:50:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:49,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 12:50:49,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:49,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:49,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:49,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850840864] [2022-07-20 12:50:49,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850840864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:49,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:49,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 12:50:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764349525] [2022-07-20 12:50:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:49,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 12:50:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 12:50:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:49,415 INFO L87 Difference]: Start difference. First operand 553 states and 622 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:49,468 INFO L93 Difference]: Finished difference Result 599 states and 668 transitions. [2022-07-20 12:50:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 12:50:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-20 12:50:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:49,471 INFO L225 Difference]: With dead ends: 599 [2022-07-20 12:50:49,471 INFO L226 Difference]: Without dead ends: 599 [2022-07-20 12:50:49,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 12:50:49,472 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 67 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:49,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1012 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 12:50:49,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-20 12:50:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-07-20 12:50:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 367 states have (on average 1.7493188010899183) internal successors, (642), 593 states have internal predecessors, (642), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 668 transitions. [2022-07-20 12:50:49,483 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 668 transitions. Word has length 50 [2022-07-20 12:50:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:49,483 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 668 transitions. [2022-07-20 12:50:49,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 668 transitions. [2022-07-20 12:50:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 12:50:49,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:49,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:49,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:49,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-07-20 12:50:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:49,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308471565] [2022-07-20 12:50:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:49,699 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:49,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 12:50:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:49,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 12:50:49,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:49,940 INFO L390 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 [2022-07-20 12:50:49,950 INFO L390 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 [2022-07-20 12:50:50,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 12:50:50,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-20 12:50:50,282 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-20 12:50:50,283 INFO L390 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 11 treesize of output 11 [2022-07-20 12:50:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:50,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:50,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:50,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308471565] [2022-07-20 12:50:50,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308471565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:50,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:50,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 12:50:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929962331] [2022-07-20 12:50:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:50,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 12:50:50,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 12:50:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:50,300 INFO L87 Difference]: Start difference. First operand 599 states and 668 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:51,148 INFO L93 Difference]: Finished difference Result 568 states and 638 transitions. [2022-07-20 12:50:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 12:50:51,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-20 12:50:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:51,151 INFO L225 Difference]: With dead ends: 568 [2022-07-20 12:50:51,151 INFO L226 Difference]: Without dead ends: 568 [2022-07-20 12:50:51,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:51,152 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 827 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:51,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 260 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 12:50:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-20 12:50:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 529. [2022-07-20 12:50:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 335 states have (on average 1.6059701492537313) internal successors, (538), 523 states have internal predecessors, (538), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 564 transitions. [2022-07-20 12:50:51,161 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 564 transitions. Word has length 53 [2022-07-20 12:50:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:51,162 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 564 transitions. [2022-07-20 12:50:51,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 564 transitions. [2022-07-20 12:50:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 12:50:51,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:51,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:51,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:51,376 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-07-20 12:50:51,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:51,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873685279] [2022-07-20 12:50:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:51,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:51,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:51,378 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:51,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 12:50:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:51,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 12:50:51,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:51,570 INFO L390 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 [2022-07-20 12:50:51,580 INFO L390 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 [2022-07-20 12:50:51,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-20 12:50:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:51,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:51,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:51,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873685279] [2022-07-20 12:50:51,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873685279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:51,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:51,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 12:50:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633390980] [2022-07-20 12:50:51,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 12:50:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 12:50:51,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:51,611 INFO L87 Difference]: Start difference. First operand 529 states and 564 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:52,534 INFO L93 Difference]: Finished difference Result 528 states and 563 transitions. [2022-07-20 12:50:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 12:50:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-20 12:50:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:52,537 INFO L225 Difference]: With dead ends: 528 [2022-07-20 12:50:52,537 INFO L226 Difference]: Without dead ends: 528 [2022-07-20 12:50:52,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 12:50:52,538 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 4 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:52,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1325 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 12:50:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-20 12:50:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-07-20 12:50:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 335 states have (on average 1.6029850746268657) internal successors, (537), 522 states have internal predecessors, (537), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 563 transitions. [2022-07-20 12:50:52,558 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 563 transitions. Word has length 58 [2022-07-20 12:50:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:52,559 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 563 transitions. [2022-07-20 12:50:52,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 563 transitions. [2022-07-20 12:50:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 12:50:52,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:52,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:52,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-20 12:50:52,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:52,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-07-20 12:50:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:52,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217743070] [2022-07-20 12:50:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:52,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:52,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:52,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 12:50:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:52,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 12:50:52,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:52,968 INFO L390 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 [2022-07-20 12:50:52,983 INFO L390 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 [2022-07-20 12:50:52,989 INFO L390 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 [2022-07-20 12:50:53,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-20 12:50:53,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-20 12:50:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:53,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:53,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:53,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217743070] [2022-07-20 12:50:53,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217743070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:53,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:53,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 12:50:53,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319212925] [2022-07-20 12:50:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:53,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 12:50:53,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 12:50:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:53,047 INFO L87 Difference]: Start difference. First operand 528 states and 563 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:54,163 INFO L93 Difference]: Finished difference Result 527 states and 562 transitions. [2022-07-20 12:50:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 12:50:54,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-20 12:50:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:54,166 INFO L225 Difference]: With dead ends: 527 [2022-07-20 12:50:54,166 INFO L226 Difference]: Without dead ends: 527 [2022-07-20 12:50:54,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 12:50:54,167 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:54,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1335 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 12:50:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-20 12:50:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2022-07-20 12:50:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 334 states have (on average 1.6047904191616766) internal successors, (536), 521 states have internal predecessors, (536), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-20 12:50:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 562 transitions. [2022-07-20 12:50:54,176 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 562 transitions. Word has length 58 [2022-07-20 12:50:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:54,176 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 562 transitions. [2022-07-20 12:50:54,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 12:50:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 562 transitions. [2022-07-20 12:50:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 12:50:54,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:54,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:54,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:54,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:54,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash -624458498, now seen corresponding path program 1 times [2022-07-20 12:50:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:54,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678313090] [2022-07-20 12:50:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:54,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:54,391 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:54,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 12:50:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:54,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 12:50:54,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:54,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 12:50:54,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:54,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678313090] [2022-07-20 12:50:54,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678313090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 12:50:54,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 12:50:54,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 12:50:54,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741482789] [2022-07-20 12:50:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 12:50:54,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 12:50:54,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 12:50:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 12:50:54,602 INFO L87 Difference]: Start difference. First operand 527 states and 562 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 12:50:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:54,632 INFO L93 Difference]: Finished difference Result 530 states and 566 transitions. [2022-07-20 12:50:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 12:50:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2022-07-20 12:50:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:54,634 INFO L225 Difference]: With dead ends: 530 [2022-07-20 12:50:54,635 INFO L226 Difference]: Without dead ends: 530 [2022-07-20 12:50:54,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 12:50:54,635 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:54,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1531 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 12:50:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-07-20 12:50:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2022-07-20 12:50:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 336 states have (on average 1.6041666666666667) internal successors, (539), 524 states have internal predecessors, (539), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-20 12:50:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 566 transitions. [2022-07-20 12:50:54,645 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 566 transitions. Word has length 66 [2022-07-20 12:50:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:54,646 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 566 transitions. [2022-07-20 12:50:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 12:50:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 566 transitions. [2022-07-20 12:50:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-20 12:50:54,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:54,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:54,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-20 12:50:54,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:54,859 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash -594716233, now seen corresponding path program 1 times [2022-07-20 12:50:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600404027] [2022-07-20 12:50:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:50:54,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:54,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:54,862 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:54,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 12:50:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:50:55,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 12:50:55,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:55,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:50:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:55,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:55,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600404027] [2022-07-20 12:50:55,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600404027] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 12:50:55,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 12:50:55,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-20 12:50:55,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306229466] [2022-07-20 12:50:55,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 12:50:55,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 12:50:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 12:50:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 12:50:55,155 INFO L87 Difference]: Start difference. First operand 530 states and 566 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:50:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:55,295 INFO L93 Difference]: Finished difference Result 542 states and 583 transitions. [2022-07-20 12:50:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 12:50:55,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-07-20 12:50:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:55,298 INFO L225 Difference]: With dead ends: 542 [2022-07-20 12:50:55,298 INFO L226 Difference]: Without dead ends: 542 [2022-07-20 12:50:55,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-20 12:50:55,299 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 23 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:55,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1535 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 12:50:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-20 12:50:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2022-07-20 12:50:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 345 states have (on average 1.6057971014492753) internal successors, (554), 533 states have internal predecessors, (554), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-20 12:50:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 581 transitions. [2022-07-20 12:50:55,309 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 581 transitions. Word has length 67 [2022-07-20 12:50:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:55,310 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 581 transitions. [2022-07-20 12:50:55,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:50:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 581 transitions. [2022-07-20 12:50:55,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-20 12:50:55,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:55,311 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:55,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:55,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 133393214, now seen corresponding path program 2 times [2022-07-20 12:50:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:55,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706144723] [2022-07-20 12:50:55,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 12:50:55,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:55,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:55,526 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:55,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 12:50:55,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 12:50:55,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 12:50:55,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 12:50:55,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:55,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:50:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:56,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:56,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706144723] [2022-07-20 12:50:56,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706144723] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 12:50:56,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 12:50:56,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-20 12:50:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691392456] [2022-07-20 12:50:56,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 12:50:56,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 12:50:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 12:50:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-20 12:50:56,031 INFO L87 Difference]: Start difference. First operand 540 states and 581 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:50:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:50:56,520 INFO L93 Difference]: Finished difference Result 561 states and 609 transitions. [2022-07-20 12:50:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-20 12:50:56,521 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-07-20 12:50:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:50:56,523 INFO L225 Difference]: With dead ends: 561 [2022-07-20 12:50:56,523 INFO L226 Difference]: Without dead ends: 557 [2022-07-20 12:50:56,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-07-20 12:50:56,524 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 63 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 12:50:56,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3079 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 12:50:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-20 12:50:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 549. [2022-07-20 12:50:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 354 states have (on average 1.5988700564971752) internal successors, (566), 542 states have internal predecessors, (566), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-20 12:50:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 593 transitions. [2022-07-20 12:50:56,548 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 593 transitions. Word has length 70 [2022-07-20 12:50:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:50:56,549 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 593 transitions. [2022-07-20 12:50:56,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:50:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 593 transitions. [2022-07-20 12:50:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-20 12:50:56,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:50:56,550 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:50:56,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 12:50:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:50:56,763 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:50:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:50:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash 419670174, now seen corresponding path program 3 times [2022-07-20 12:50:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:50:56,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007378687] [2022-07-20 12:50:56,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 12:50:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:50:56,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:50:56,765 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:50:56,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 12:50:57,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-20 12:50:57,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 12:50:57,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 12:50:57,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:50:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:57,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:50:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:50:57,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:50:57,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007378687] [2022-07-20 12:50:57,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007378687] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 12:50:57,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 12:50:57,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-20 12:50:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565170404] [2022-07-20 12:50:57,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 12:50:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-20 12:50:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:50:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-20 12:50:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-20 12:50:57,994 INFO L87 Difference]: Start difference. First operand 549 states and 593 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:51:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:51:00,293 INFO L93 Difference]: Finished difference Result 591 states and 655 transitions. [2022-07-20 12:51:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-20 12:51:00,294 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-07-20 12:51:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:51:00,296 INFO L225 Difference]: With dead ends: 591 [2022-07-20 12:51:00,296 INFO L226 Difference]: Without dead ends: 585 [2022-07-20 12:51:00,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 12:51:00,298 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 196 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 6209 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 12:51:00,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 6209 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 12:51:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-07-20 12:51:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 567. [2022-07-20 12:51:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 372 states have (on average 1.5833333333333333) internal successors, (589), 560 states have internal predecessors, (589), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-20 12:51:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 616 transitions. [2022-07-20 12:51:00,309 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 616 transitions. Word has length 76 [2022-07-20 12:51:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:51:00,310 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 616 transitions. [2022-07-20 12:51:00,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:51:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 616 transitions. [2022-07-20 12:51:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-20 12:51:00,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:51:00,311 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:51:00,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-20 12:51:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:51:00,526 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:51:00,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:51:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1934068574, now seen corresponding path program 4 times [2022-07-20 12:51:00,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:51:00,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550741774] [2022-07-20 12:51:00,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 12:51:00,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:51:00,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:51:00,530 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:51:00,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 12:51:00,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 12:51:00,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 12:51:00,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-20 12:51:00,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:51:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:51:01,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:51:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 12:51:02,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:51:02,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550741774] [2022-07-20 12:51:02,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550741774] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 12:51:02,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 12:51:02,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-20 12:51:02,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916311982] [2022-07-20 12:51:02,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 12:51:02,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-20 12:51:02,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:51:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-20 12:51:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-07-20 12:51:02,400 INFO L87 Difference]: Start difference. First operand 567 states and 616 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:51:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:51:10,995 INFO L93 Difference]: Finished difference Result 647 states and 728 transitions. [2022-07-20 12:51:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-20 12:51:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2022-07-20 12:51:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:51:10,997 INFO L225 Difference]: With dead ends: 647 [2022-07-20 12:51:10,998 INFO L226 Difference]: Without dead ends: 643 [2022-07-20 12:51:11,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-07-20 12:51:11,002 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 393 mSDsluCounter, 13692 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 14225 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 12:51:11,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 14225 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 12:51:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-07-20 12:51:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 601. [2022-07-20 12:51:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 406 states have (on average 1.564039408866995) internal successors, (635), 594 states have internal predecessors, (635), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-20 12:51:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 662 transitions. [2022-07-20 12:51:11,014 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 662 transitions. Word has length 88 [2022-07-20 12:51:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:51:11,015 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 662 transitions. [2022-07-20 12:51:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 12:51:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 662 transitions. [2022-07-20 12:51:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 12:51:11,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:51:11,016 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:51:11,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-20 12:51:11,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 12:51:11,230 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:51:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:51:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1476884034, now seen corresponding path program 5 times [2022-07-20 12:51:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:51:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837390167] [2022-07-20 12:51:11,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 12:51:11,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:51:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:51:11,233 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:51:11,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-20 12:51:12,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-20 12:51:12,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 12:51:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-20 12:51:12,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:51:12,495 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-20 12:51:12,496 INFO L390 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 21 [2022-07-20 12:51:12,739 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-20 12:51:12,739 INFO L390 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 26 treesize of output 43 [2022-07-20 12:51:12,795 INFO L390 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 [2022-07-20 12:51:12,921 INFO L390 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 43 treesize of output 25 [2022-07-20 12:51:13,417 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1573 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1573)))) is different from true [2022-07-20 12:51:13,501 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1576 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1576)))) is different from true [2022-07-20 12:51:13,910 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590) |c_#memory_$Pointer$.base|))) is different from true [2022-07-20 12:51:13,923 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591)))) is different from true [2022-07-20 12:51:14,249 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_11 (_ BitVec 32))) (and (not (= v_arrayElimCell_11 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_11)) (_ bv1 1))))) (exists ((v_ArrVal_1602 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1602)))) is different from true [2022-07-20 12:51:14,371 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 12:51:14,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 54 [2022-07-20 12:51:14,426 INFO L390 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 52 treesize of output 28 [2022-07-20 12:51:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 741 trivial. 210 not checked. [2022-07-20 12:51:14,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:51:14,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:51:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837390167] [2022-07-20 12:51:14,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837390167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 12:51:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [258142237] [2022-07-20 12:51:14,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 12:51:14,768 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-20 12:51:14,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-20 12:51:14,770 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-20 12:51:14,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-07-20 12:52:35,348 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-20 12:52:35,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 12:52:35,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-20 12:52:35,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:52:35,573 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-20 12:52:35,573 INFO L390 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 17 [2022-07-20 12:52:35,786 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-20 12:52:35,787 INFO L390 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 24 treesize of output 41 [2022-07-20 12:52:35,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 12:52:36,010 INFO L390 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 32 treesize of output 14 [2022-07-20 12:52:38,339 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 12:52:38,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-07-20 12:52:38,395 INFO L390 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 41 treesize of output 17 [2022-07-20 12:52:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-20 12:52:38,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:52:38,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [258142237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 12:52:38,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 12:52:38,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2022-07-20 12:52:38,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716980090] [2022-07-20 12:52:38,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 12:52:38,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-20 12:52:38,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 12:52:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-20 12:52:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=336, Unknown=32, NotChecked=210, Total=650 [2022-07-20 12:52:38,661 INFO L87 Difference]: Start difference. First operand 601 states and 662 transitions. Second operand has 23 states, 20 states have (on average 7.05) internal successors, (141), 22 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 12:52:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 12:52:42,676 INFO L93 Difference]: Finished difference Result 1084 states and 1182 transitions. [2022-07-20 12:52:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-20 12:52:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.05) internal successors, (141), 22 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2022-07-20 12:52:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 12:52:42,681 INFO L225 Difference]: With dead ends: 1084 [2022-07-20 12:52:42,681 INFO L226 Difference]: Without dead ends: 1080 [2022-07-20 12:52:42,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 118 SyntacticMatches, 87 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=189, Invalid=832, Unknown=55, NotChecked=330, Total=1406 [2022-07-20 12:52:42,682 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 912 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 9606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6767 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-20 12:52:42,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 3563 Invalid, 9606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2802 Invalid, 0 Unknown, 6767 Unchecked, 3.4s Time] [2022-07-20 12:52:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-07-20 12:52:42,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 793. [2022-07-20 12:52:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 596 states have (on average 1.511744966442953) internal successors, (901), 783 states have internal predecessors, (901), 15 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (16), 6 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-20 12:52:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 932 transitions. [2022-07-20 12:52:42,698 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 932 transitions. Word has length 110 [2022-07-20 12:52:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 12:52:42,699 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 932 transitions. [2022-07-20 12:52:42,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.05) internal successors, (141), 22 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 12:52:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 932 transitions. [2022-07-20 12:52:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 12:52:42,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 12:52:42,700 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 12:52:42,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-20 12:52:42,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-07-20 12:52:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-20 12:52:43,120 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2022-07-20 12:52:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 12:52:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1476884033, now seen corresponding path program 1 times [2022-07-20 12:52:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 12:52:43,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683820938] [2022-07-20 12:52:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:52:43,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 12:52:43,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 12:52:43,123 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 12:52:43,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-20 12:52:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 12:52:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 110 conjunts are in the unsatisfiable core [2022-07-20 12:52:43,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 12:52:43,859 INFO L390 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 [2022-07-20 12:52:43,991 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-20 12:52:43,991 INFO L390 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 11 treesize of output 11 [2022-07-20 12:52:43,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-20 12:52:44,015 INFO L390 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 [2022-07-20 12:52:44,022 INFO L390 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 [2022-07-20 12:52:44,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-20 12:52:44,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-20 12:52:44,181 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2459 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2459) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2458)))) is different from true [2022-07-20 12:52:44,190 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2460 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2460))) (exists ((v_ArrVal_2461 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2461) |c_#memory_$Pointer$.base|))) is different from true [2022-07-20 12:52:44,225 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2465) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2464 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2464)))) is different from true [2022-07-20 12:52:44,367 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2476 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2476))) (exists ((v_ArrVal_2477 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2477)))) is different from true [2022-07-20 12:52:44,404 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2481 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2481))) (exists ((v_ArrVal_2480 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2480) |c_#memory_$Pointer$.base|))) is different from true [2022-07-20 12:52:44,441 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2484 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2484) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2485 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2485)))) is different from true [2022-07-20 12:52:44,477 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2489 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2489) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2488 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2488) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,487 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2490 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2490))) (exists ((v_ArrVal_2491 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2491)))) is different from true [2022-07-20 12:52:44,497 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2493) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2492 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2492)))) is different from true [2022-07-20 12:52:44,557 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2499))) (exists ((v_ArrVal_2498 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2498)))) is different from true [2022-07-20 12:52:44,566 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2500))) (exists ((v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2501) |c_#memory_$Pointer$.base|))) is different from true [2022-07-20 12:52:44,582 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2503 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2503))) (exists ((v_ArrVal_2502 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2502)))) is different from true [2022-07-20 12:52:44,647 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508)))) is different from true [2022-07-20 12:52:44,657 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,694 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2514 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2514))) (exists ((v_ArrVal_2515 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2515)))) is different from true [2022-07-20 12:52:44,704 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2516 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2516) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2517 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2517)))) is different from true [2022-07-20 12:52:44,713 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2519))) (exists ((v_ArrVal_2518 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2518)))) is different from true [2022-07-20 12:52:44,721 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2520 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2520))) (exists ((v_ArrVal_2521 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2521)))) is different from true [2022-07-20 12:52:44,728 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2523 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2523))) (exists ((v_ArrVal_2522 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2522) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,738 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2525 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2525))) (exists ((v_ArrVal_2524 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2524) |c_#memory_$Pointer$.base|))) is different from true [2022-07-20 12:52:44,748 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526))) (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527)))) is different from true [2022-07-20 12:52:44,763 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,799 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2532 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2532) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2533 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2533) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,834 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536)))) is different from true [2022-07-20 12:52:44,845 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2539 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2539))) (exists ((v_ArrVal_2538 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2538) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,855 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-20 12:52:44,910 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-20 12:52:44,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-20 12:52:44,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-20 12:52:44,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-07-20 12:52:44,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-20 12:52:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 153 trivial. 819 not checked. [2022-07-20 12:52:44,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 12:52:45,783 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2634) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32)))))) is different from false [2022-07-20 12:52:45,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 12:52:45,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683820938] [2022-07-20 12:52:45,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683820938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 12:52:45,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1504791020] [2022-07-20 12:52:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 12:52:45,790 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-20 12:52:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-20 12:52:45,792 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-20 12:52:45,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process