./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_SAX_test5-2.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 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:54:20,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:54:20,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:54:20,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:54:20,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:54:20,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:54:20,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:54:20,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:54:20,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:54:20,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:54:20,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:54:20,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:54:20,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:54:20,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:54:20,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:54:20,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:54:20,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:54:20,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:54:20,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:54:20,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:54:20,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:54:20,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:54:20,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:54:20,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:54:20,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:54:20,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:54:20,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:54:20,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:54:20,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:54:20,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:54:20,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:54:20,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:54:20,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:54:20,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:54:20,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:54:20,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:54:21,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:54:21,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:54:21,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:54:21,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:54:21,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:54:21,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 08:54:21,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:54:21,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:54:21,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:54:21,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:54:21,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:54:21,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:54:21,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:54:21,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:54:21,030 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:54:21,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:54:21,031 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:54:21,032 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:54:21,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:54:21,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:54:21,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:54:21,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:54:21,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:54:21,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:54:21,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:54:21,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:54:21,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:54:21,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:54:21,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 08:54:21,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 08:54:21,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:54:21,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 [2021-12-16 08:54:21,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:54:21,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:54:21,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:54:21,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:54:21,283 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:54:21,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2021-12-16 08:54:21,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fd9c0ad/a8d8bd3425ca4ed891d6ff3d8108fd1d/FLAG2058108c8 [2021-12-16 08:54:21,808 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:54:21,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2021-12-16 08:54:21,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fd9c0ad/a8d8bd3425ca4ed891d6ff3d8108fd1d/FLAG2058108c8 [2021-12-16 08:54:22,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fd9c0ad/a8d8bd3425ca4ed891d6ff3d8108fd1d [2021-12-16 08:54:22,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:54:22,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:54:22,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:54:22,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:54:22,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:54:22,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:54:22" (1/1) ... [2021-12-16 08:54:22,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277f9bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:22, skipping insertion in model container [2021-12-16 08:54:22,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:54:22" (1/1) ... [2021-12-16 08:54:22,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:54:22,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:54:22,492 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_SAX_test5-2.i[33021,33034] [2021-12-16 08:54:22,619 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_SAX_test5-2.i[49681,49694] [2021-12-16 08:54:22,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:54:22,650 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-16 08:54:22,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ffd69c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:22, skipping insertion in model container [2021-12-16 08:54:22,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:54:22,652 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 08:54:22,654 INFO L158 Benchmark]: Toolchain (without parser) took 529.89ms. Allocated memory is still 107.0MB. Free memory was 69.3MB in the beginning and 69.0MB in the end (delta: 270.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 08:54:22,655 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 78.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 08:54:22,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.04ms. Allocated memory is still 107.0MB. Free memory was 69.1MB in the beginning and 69.0MB in the end (delta: 121.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 08:54:22,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 78.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.04ms. Allocated memory is still 107.0MB. Free memory was 69.1MB in the beginning and 69.0MB in the end (delta: 121.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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_SAX_test5-2.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 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:54:24,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:54:24,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:54:24,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:54:24,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:54:24,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:54:24,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:54:24,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:54:24,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:54:24,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:54:24,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:54:24,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:54:24,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:54:24,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:54:24,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:54:24,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:54:24,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:54:24,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:54:24,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:54:24,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:54:24,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:54:24,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:54:24,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:54:24,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:54:24,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:54:24,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:54:24,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:54:24,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:54:24,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:54:24,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:54:24,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:54:24,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:54:24,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:54:24,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:54:24,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:54:24,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:54:24,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:54:24,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:54:24,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:54:24,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:54:24,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:54:24,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 08:54:24,175 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:54:24,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:54:24,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:54:24,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:54:24,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:54:24,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:54:24,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:54:24,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:54:24,179 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:54:24,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:54:24,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:54:24,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:54:24,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:54:24,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:54:24,181 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 08:54:24,181 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 08:54:24,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:54:24,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:54:24,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:54:24,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:54:24,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:54:24,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:54:24,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:54:24,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:54:24,182 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 08:54:24,182 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 08:54:24,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:54:24,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 08:54:24,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 [2021-12-16 08:54:24,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:54:24,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:54:24,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:54:24,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:54:24,456 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:54:24,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2021-12-16 08:54:24,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a663ffc0/9057941755d24cf2beb615596b016760/FLAG8a53c63c8 [2021-12-16 08:54:24,972 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:54:24,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2021-12-16 08:54:24,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a663ffc0/9057941755d24cf2beb615596b016760/FLAG8a53c63c8 [2021-12-16 08:54:24,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a663ffc0/9057941755d24cf2beb615596b016760 [2021-12-16 08:54:25,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:54:25,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:54:25,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:54:25,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:54:25,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:54:25,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6c8c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25, skipping insertion in model container [2021-12-16 08:54:25,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:54:25,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:54:25,398 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_SAX_test5-2.i[33021,33034] [2021-12-16 08:54:25,540 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_SAX_test5-2.i[49681,49694] [2021-12-16 08:54:25,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:54:25,575 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 08:54:25,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:54:25,608 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_SAX_test5-2.i[33021,33034] [2021-12-16 08:54:25,676 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_SAX_test5-2.i[49681,49694] [2021-12-16 08:54:25,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:54:25,693 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 08:54:25,719 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_SAX_test5-2.i[33021,33034] [2021-12-16 08:54:25,753 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_SAX_test5-2.i[49681,49694] [2021-12-16 08:54:25,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:54:25,797 INFO L208 MainTranslator]: Completed translation [2021-12-16 08:54:25,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25 WrapperNode [2021-12-16 08:54:25,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:54:25,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 08:54:25,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 08:54:25,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 08:54:25,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,905 INFO L137 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1578 [2021-12-16 08:54:25,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 08:54:25,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 08:54:25,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 08:54:25,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 08:54:25,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:25,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 08:54:26,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 08:54:26,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 08:54:26,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 08:54:26,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (1/1) ... [2021-12-16 08:54:26,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:54:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:54:26,035 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) [2021-12-16 08:54:26,040 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 [2021-12-16 08:54:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 08:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 08:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 08:54:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 08:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 08:54:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 08:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 08:54:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 08:54:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 08:54:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 08:54:26,323 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 08:54:26,324 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 08:54:26,327 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 08:54:30,322 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 08:54:30,332 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 08:54:30,332 INFO L301 CfgBuilder]: Removed 92 assume(true) statements. [2021-12-16 08:54:30,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:54:30 BoogieIcfgContainer [2021-12-16 08:54:30,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 08:54:30,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 08:54:30,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 08:54:30,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 08:54:30,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:54:25" (1/3) ... [2021-12-16 08:54:30,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2bd908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:54:30, skipping insertion in model container [2021-12-16 08:54:30,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:54:25" (2/3) ... [2021-12-16 08:54:30,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2bd908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:54:30, skipping insertion in model container [2021-12-16 08:54:30,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:54:30" (3/3) ... [2021-12-16 08:54:30,350 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-2.i [2021-12-16 08:54:30,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 08:54:30,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2021-12-16 08:54:30,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 08:54:30,385 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 08:54:30,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2021-12-16 08:54:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:54:30,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:30,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:54:30,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-12-16 08:54:30,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:30,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010368163] [2021-12-16 08:54:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:30,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:30,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:30,428 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) [2021-12-16 08:54:30,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 08:54:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:30,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 08:54:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:30,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:30,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010368163] [2021-12-16 08:54:30,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010368163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:30,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:30,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:54:30,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613060955] [2021-12-16 08:54:30,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:30,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 08:54:30,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 08:54:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 08:54:30,659 INFO L87 Difference]: Start difference. First operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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) [2021-12-16 08:54:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:30,721 INFO L93 Difference]: Finished difference Result 1637 states and 1731 transitions. [2021-12-16 08:54:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 08:54:30,723 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 [2021-12-16 08:54:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:30,739 INFO L225 Difference]: With dead ends: 1637 [2021-12-16 08:54:30,740 INFO L226 Difference]: Without dead ends: 1635 [2021-12-16 08:54:30,741 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:30,743 INFO L933 BasicCegarLoop]: 1731 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, 1731 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 [2021-12-16 08:54:30,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:54:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-12-16 08:54:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2021-12-16 08:54:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 804 states have (on average 2.123134328358209) internal successors, (1707), 1626 states have internal predecessors, (1707), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1729 transitions. [2021-12-16 08:54:30,816 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1729 transitions. Word has length 5 [2021-12-16 08:54:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:30,817 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 1729 transitions. [2021-12-16 08:54:30,817 INFO L471 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) [2021-12-16 08:54:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1729 transitions. [2021-12-16 08:54:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:54:30,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:30,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:54:30,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:31,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:31,024 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-12-16 08:54:31,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:31,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287012324] [2021-12-16 08:54:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:31,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:31,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:31,028 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) [2021-12-16 08:54:31,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 08:54:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:31,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:54:31,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:31,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:31,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:31,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:31,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287012324] [2021-12-16 08:54:31,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287012324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:31,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:31,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:54:31,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78233036] [2021-12-16 08:54:31,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:31,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:54:31,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:54:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:54:31,272 INFO L87 Difference]: Start difference. First operand 1635 states and 1729 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) [2021-12-16 08:54:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:33,278 INFO L93 Difference]: Finished difference Result 1891 states and 2028 transitions. [2021-12-16 08:54:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:54:33,279 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 [2021-12-16 08:54:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:33,284 INFO L225 Difference]: With dead ends: 1891 [2021-12-16 08:54:33,284 INFO L226 Difference]: Without dead ends: 1891 [2021-12-16 08:54:33,285 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:33,286 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1369 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:33,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1533 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 08:54:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-12-16 08:54:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1620. [2021-12-16 08:54:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 880 states have (on average 1.9897727272727272) internal successors, (1751), 1611 states have internal predecessors, (1751), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1773 transitions. [2021-12-16 08:54:33,322 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1773 transitions. Word has length 5 [2021-12-16 08:54:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:33,322 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 1773 transitions. [2021-12-16 08:54:33,323 INFO L471 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) [2021-12-16 08:54:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1773 transitions. [2021-12-16 08:54:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:54:33,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:33,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:54:33,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-16 08:54:33,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:33,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:33,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-12-16 08:54:33,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:33,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987365154] [2021-12-16 08:54:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:33,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:33,534 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) [2021-12-16 08:54:33,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 08:54:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:33,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:54:33,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:33,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:33,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:33,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:33,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987365154] [2021-12-16 08:54:33,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987365154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:33,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:33,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:54:33,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736888785] [2021-12-16 08:54:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:33,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:54:33,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:54:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:54:33,679 INFO L87 Difference]: Start difference. First operand 1620 states and 1773 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) [2021-12-16 08:54:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:36,414 INFO L93 Difference]: Finished difference Result 2140 states and 2343 transitions. [2021-12-16 08:54:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:54:36,414 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 [2021-12-16 08:54:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:36,419 INFO L225 Difference]: With dead ends: 2140 [2021-12-16 08:54:36,420 INFO L226 Difference]: Without dead ends: 2140 [2021-12-16 08:54:36,420 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:36,421 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 741 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:36,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 2268 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 08:54:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-16 08:54:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1776. [2021-12-16 08:54:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1046 states have (on average 1.9665391969407267) internal successors, (2057), 1767 states have internal predecessors, (2057), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2079 transitions. [2021-12-16 08:54:36,445 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2079 transitions. Word has length 5 [2021-12-16 08:54:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:36,445 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 2079 transitions. [2021-12-16 08:54:36,445 INFO L471 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) [2021-12-16 08:54:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2079 transitions. [2021-12-16 08:54:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 08:54:36,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:36,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 08:54:36,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:36,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:36,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-12-16 08:54:36,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:36,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887115877] [2021-12-16 08:54:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:36,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:36,654 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) [2021-12-16 08:54:36,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 08:54:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:36,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:54:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:36,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:36,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:36,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887115877] [2021-12-16 08:54:36,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887115877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:36,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:36,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:54:36,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345826918] [2021-12-16 08:54:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:36,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:54:36,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:54:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:54:36,773 INFO L87 Difference]: Start difference. First operand 1776 states and 2079 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) [2021-12-16 08:54:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:36,857 INFO L93 Difference]: Finished difference Result 3336 states and 3931 transitions. [2021-12-16 08:54:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:54:36,860 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 [2021-12-16 08:54:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:36,868 INFO L225 Difference]: With dead ends: 3336 [2021-12-16 08:54:36,869 INFO L226 Difference]: Without dead ends: 3336 [2021-12-16 08:54:36,869 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:36,870 INFO L933 BasicCegarLoop]: 1854 mSDtfsCounter, 1377 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:36,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 3471 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:54:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-12-16 08:54:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 1778. [2021-12-16 08:54:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2081 transitions. [2021-12-16 08:54:36,913 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2081 transitions. Word has length 6 [2021-12-16 08:54:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:36,913 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 2081 transitions. [2021-12-16 08:54:36,913 INFO L471 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) [2021-12-16 08:54:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2081 transitions. [2021-12-16 08:54:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 08:54:36,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:36,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:36,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:37,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:37,129 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-12-16 08:54:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648711346] [2021-12-16 08:54:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:37,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:37,131 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) [2021-12-16 08:54:37,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 08:54:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:37,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:54:37,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:37,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:37,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648711346] [2021-12-16 08:54:37,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648711346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:37,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:37,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:54:37,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554749915] [2021-12-16 08:54:37,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:37,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:54:37,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:37,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:54:37,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:54:37,294 INFO L87 Difference]: Start difference. First operand 1778 states and 2081 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) [2021-12-16 08:54:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:37,329 INFO L93 Difference]: Finished difference Result 1742 states and 2044 transitions. [2021-12-16 08:54:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:54:37,330 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 [2021-12-16 08:54:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:37,333 INFO L225 Difference]: With dead ends: 1742 [2021-12-16 08:54:37,333 INFO L226 Difference]: Without dead ends: 1742 [2021-12-16 08:54:37,334 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:37,335 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1550 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:37,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 1608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:54:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-12-16 08:54:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1736. [2021-12-16 08:54:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1030 states have (on average 1.9572815533980583) internal successors, (2016), 1727 states have internal predecessors, (2016), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2038 transitions. [2021-12-16 08:54:37,360 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2038 transitions. Word has length 11 [2021-12-16 08:54:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:37,360 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 2038 transitions. [2021-12-16 08:54:37,360 INFO L471 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) [2021-12-16 08:54:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2038 transitions. [2021-12-16 08:54:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 08:54:37,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:37,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:37,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:37,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:37,570 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-12-16 08:54:37,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:37,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508311432] [2021-12-16 08:54:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:37,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:37,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:37,573 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) [2021-12-16 08:54:37,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 08:54:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:37,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:54:37,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:37,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:37,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:37,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508311432] [2021-12-16 08:54:37,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508311432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:37,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:37,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:37,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337346812] [2021-12-16 08:54:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:37,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:37,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:37,738 INFO L87 Difference]: Start difference. First operand 1736 states and 2038 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) [2021-12-16 08:54:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:37,792 INFO L93 Difference]: Finished difference Result 1721 states and 2016 transitions. [2021-12-16 08:54:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:54:37,793 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 [2021-12-16 08:54:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:37,797 INFO L225 Difference]: With dead ends: 1721 [2021-12-16 08:54:37,797 INFO L226 Difference]: Without dead ends: 1721 [2021-12-16 08:54:37,797 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:37,798 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1521 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:37,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 3091 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:54:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-12-16 08:54:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1714. [2021-12-16 08:54:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1022 states have (on average 1.9442270058708415) internal successors, (1987), 1705 states have internal predecessors, (1987), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2009 transitions. [2021-12-16 08:54:37,820 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2009 transitions. Word has length 13 [2021-12-16 08:54:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:37,820 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2009 transitions. [2021-12-16 08:54:37,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2009 transitions. [2021-12-16 08:54:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 08:54:37,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:37,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:37,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:38,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:38,028 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:38,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-12-16 08:54:38,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:38,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300080624] [2021-12-16 08:54:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:38,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:38,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:38,031 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) [2021-12-16 08:54:38,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 08:54:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:38,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:54:38,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:38,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:38,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:38,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:38,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300080624] [2021-12-16 08:54:38,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300080624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:38,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:38,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:54:38,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509592806] [2021-12-16 08:54:38,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:38,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:38,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:38,249 INFO L87 Difference]: Start difference. First operand 1714 states and 2009 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) [2021-12-16 08:54:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:41,193 INFO L93 Difference]: Finished difference Result 2759 states and 3092 transitions. [2021-12-16 08:54:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:54:41,194 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 [2021-12-16 08:54:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:41,200 INFO L225 Difference]: With dead ends: 2759 [2021-12-16 08:54:41,200 INFO L226 Difference]: Without dead ends: 2759 [2021-12-16 08:54:41,200 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:41,201 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 3206 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:41,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3214 Valid, 1886 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-16 08:54:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-12-16 08:54:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 1710. [2021-12-16 08:54:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1022 states have (on average 1.9403131115459882) internal successors, (1983), 1701 states have internal predecessors, (1983), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2005 transitions. [2021-12-16 08:54:41,221 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2005 transitions. Word has length 27 [2021-12-16 08:54:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:41,222 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 2005 transitions. [2021-12-16 08:54:41,222 INFO L471 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) [2021-12-16 08:54:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2005 transitions. [2021-12-16 08:54:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 08:54:41,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:41,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:41,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:41,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:41,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-12-16 08:54:41,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328839039] [2021-12-16 08:54:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:41,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:41,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:41,432 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) [2021-12-16 08:54:41,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 08:54:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 08:54:41,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:41,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:41,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:41,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328839039] [2021-12-16 08:54:41,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328839039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:41,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:41,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:54:41,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183288791] [2021-12-16 08:54:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:41,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:41,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:41,725 INFO L87 Difference]: Start difference. First operand 1710 states and 2005 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) [2021-12-16 08:54:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:45,183 INFO L93 Difference]: Finished difference Result 2278 states and 2483 transitions. [2021-12-16 08:54:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:54:45,183 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 [2021-12-16 08:54:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:45,188 INFO L225 Difference]: With dead ends: 2278 [2021-12-16 08:54:45,188 INFO L226 Difference]: Without dead ends: 2278 [2021-12-16 08:54:45,189 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:45,189 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 1501 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:45,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1501 Valid, 2603 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-16 08:54:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2021-12-16 08:54:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1706. [2021-12-16 08:54:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1022 states have (on average 1.936399217221135) internal successors, (1979), 1697 states have internal predecessors, (1979), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2001 transitions. [2021-12-16 08:54:45,210 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2001 transitions. Word has length 27 [2021-12-16 08:54:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:45,210 INFO L470 AbstractCegarLoop]: Abstraction has 1706 states and 2001 transitions. [2021-12-16 08:54:45,210 INFO L471 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) [2021-12-16 08:54:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2001 transitions. [2021-12-16 08:54:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 08:54:45,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:45,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:45,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:45,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:45,419 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-12-16 08:54:45,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:45,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417359458] [2021-12-16 08:54:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:45,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:45,421 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) [2021-12-16 08:54:45,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 08:54:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:45,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:54:45,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:45,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:45,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:45,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417359458] [2021-12-16 08:54:45,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417359458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:45,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:45,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:45,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051987539] [2021-12-16 08:54:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:45,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:45,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:45,686 INFO L87 Difference]: Start difference. First operand 1706 states and 2001 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) [2021-12-16 08:54:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:45,725 INFO L93 Difference]: Finished difference Result 1706 states and 1997 transitions. [2021-12-16 08:54:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:54:45,728 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 [2021-12-16 08:54:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:45,732 INFO L225 Difference]: With dead ends: 1706 [2021-12-16 08:54:45,732 INFO L226 Difference]: Without dead ends: 1706 [2021-12-16 08:54:45,732 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:45,733 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 1497 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:45,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 3069 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:54:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-12-16 08:54:45,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1700. [2021-12-16 08:54:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1016 states have (on average 1.937992125984252) internal successors, (1969), 1691 states have internal predecessors, (1969), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 1991 transitions. [2021-12-16 08:54:45,750 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 1991 transitions. Word has length 42 [2021-12-16 08:54:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:45,751 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 1991 transitions. [2021-12-16 08:54:45,751 INFO L471 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) [2021-12-16 08:54:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 1991 transitions. [2021-12-16 08:54:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-16 08:54:45,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:45,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:45,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:45,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:45,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:45,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-12-16 08:54:45,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:45,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660768274] [2021-12-16 08:54:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:45,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:45,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:45,966 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) [2021-12-16 08:54:45,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 08:54:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:46,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:54:46,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:46,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:46,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660768274] [2021-12-16 08:54:46,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660768274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:46,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:46,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:54:46,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088580822] [2021-12-16 08:54:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:46,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:54:46,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:54:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:54:46,384 INFO L87 Difference]: Start difference. First operand 1700 states and 1991 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) [2021-12-16 08:54:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:46,546 INFO L93 Difference]: Finished difference Result 1941 states and 2241 transitions. [2021-12-16 08:54:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:54:46,546 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 [2021-12-16 08:54:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:46,551 INFO L225 Difference]: With dead ends: 1941 [2021-12-16 08:54:46,551 INFO L226 Difference]: Without dead ends: 1941 [2021-12-16 08:54:46,551 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:46,552 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 269 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:46,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 3012 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 08:54:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-12-16 08:54:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1746. [2021-12-16 08:54:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1062 states have (on average 1.8973634651600753) internal successors, (2015), 1737 states have internal predecessors, (2015), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2037 transitions. [2021-12-16 08:54:46,570 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2037 transitions. Word has length 50 [2021-12-16 08:54:46,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:46,570 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 2037 transitions. [2021-12-16 08:54:46,571 INFO L471 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) [2021-12-16 08:54:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2037 transitions. [2021-12-16 08:54:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 08:54:46,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:46,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:46,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:46,782 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-12-16 08:54:46,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:46,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453945654] [2021-12-16 08:54:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:46,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:46,784 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) [2021-12-16 08:54:46,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 08:54:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:47,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:54:47,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:47,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:47,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:47,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:54:47,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:54:47,385 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:54:47,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:54:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:47,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:47,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:47,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453945654] [2021-12-16 08:54:47,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453945654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:47,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:47,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:54:47,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028458265] [2021-12-16 08:54:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:47,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:47,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:47,398 INFO L87 Difference]: Start difference. First operand 1746 states and 2037 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) [2021-12-16 08:54:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:50,119 INFO L93 Difference]: Finished difference Result 1933 states and 2208 transitions. [2021-12-16 08:54:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:54:50,120 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 [2021-12-16 08:54:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:50,124 INFO L225 Difference]: With dead ends: 1933 [2021-12-16 08:54:50,125 INFO L226 Difference]: Without dead ends: 1933 [2021-12-16 08:54:50,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:50,125 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 1569 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:50,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 984 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 08:54:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2021-12-16 08:54:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1496. [2021-12-16 08:54:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 896 states have (on average 1.8013392857142858) internal successors, (1614), 1487 states have internal predecessors, (1614), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1636 transitions. [2021-12-16 08:54:50,142 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1636 transitions. Word has length 53 [2021-12-16 08:54:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:50,142 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 1636 transitions. [2021-12-16 08:54:50,142 INFO L471 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) [2021-12-16 08:54:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1636 transitions. [2021-12-16 08:54:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 08:54:50,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:50,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:50,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:50,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:50,353 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-12-16 08:54:50,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:50,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671460845] [2021-12-16 08:54:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:50,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:50,355 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) [2021-12-16 08:54:50,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 08:54:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:50,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:54:50,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:50,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:50,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:54:50,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 08:54:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:50,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:50,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:50,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671460845] [2021-12-16 08:54:50,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671460845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:50,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:50,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:50,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923275355] [2021-12-16 08:54:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:50,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:54:50,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:54:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:54:50,676 INFO L87 Difference]: Start difference. First operand 1496 states and 1636 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) [2021-12-16 08:54:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:53,228 INFO L93 Difference]: Finished difference Result 1495 states and 1635 transitions. [2021-12-16 08:54:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:54:53,228 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 [2021-12-16 08:54:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:53,232 INFO L225 Difference]: With dead ends: 1495 [2021-12-16 08:54:53,232 INFO L226 Difference]: Without dead ends: 1495 [2021-12-16 08:54:53,232 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:53,233 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 4 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:53,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3704 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 08:54:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-12-16 08:54:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1495. [2021-12-16 08:54:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 896 states have (on average 1.8002232142857142) internal successors, (1613), 1486 states have internal predecessors, (1613), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1635 transitions. [2021-12-16 08:54:53,246 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1635 transitions. Word has length 58 [2021-12-16 08:54:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:53,247 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 1635 transitions. [2021-12-16 08:54:53,247 INFO L471 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) [2021-12-16 08:54:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1635 transitions. [2021-12-16 08:54:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 08:54:53,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:53,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:53,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-16 08:54:53,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:53,456 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-12-16 08:54:53,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:53,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105744654] [2021-12-16 08:54:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:53,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:53,458 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) [2021-12-16 08:54:53,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 08:54:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:53,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 08:54:53,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:53,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:53,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:54:53,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:54:53,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 08:54:53,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 08:54:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:53,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:53,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:53,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105744654] [2021-12-16 08:54:53,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105744654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:53,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:53,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:53,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319053185] [2021-12-16 08:54:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:53,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:54:53,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:54:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:54:53,849 INFO L87 Difference]: Start difference. First operand 1495 states and 1635 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) [2021-12-16 08:54:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:57,145 INFO L93 Difference]: Finished difference Result 1494 states and 1634 transitions. [2021-12-16 08:54:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:54:57,146 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 [2021-12-16 08:54:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:57,149 INFO L225 Difference]: With dead ends: 1494 [2021-12-16 08:54:57,149 INFO L226 Difference]: Without dead ends: 1494 [2021-12-16 08:54:57,150 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:57,150 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 2 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:57,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3750 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-16 08:54:57,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-12-16 08:54:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2021-12-16 08:54:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 895 states have (on average 1.8011173184357543) internal successors, (1612), 1485 states have internal predecessors, (1612), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:54:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1634 transitions. [2021-12-16 08:54:57,169 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1634 transitions. Word has length 58 [2021-12-16 08:54:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:57,170 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1634 transitions. [2021-12-16 08:54:57,170 INFO L471 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) [2021-12-16 08:54:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1634 transitions. [2021-12-16 08:54:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 08:54:57,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:57,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:57,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:57,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:57,380 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:57,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2015085822, now seen corresponding path program 1 times [2021-12-16 08:54:57,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:57,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249343573] [2021-12-16 08:54:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:57,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:57,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:57,384 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) [2021-12-16 08:54:57,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 08:54:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:57,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:54:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:57,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:57,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:57,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249343573] [2021-12-16 08:54:57,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249343573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:57,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:57,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:57,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016193309] [2021-12-16 08:54:57,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:57,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:57,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:57,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:57,704 INFO L87 Difference]: Start difference. First operand 1494 states and 1634 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) [2021-12-16 08:54:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:57,745 INFO L93 Difference]: Finished difference Result 1497 states and 1639 transitions. [2021-12-16 08:54:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:54:57,746 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 [2021-12-16 08:54:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:57,750 INFO L225 Difference]: With dead ends: 1497 [2021-12-16 08:54:57,750 INFO L226 Difference]: Without dead ends: 1497 [2021-12-16 08:54:57,750 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:57,751 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 2 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4336 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:57,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4336 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:54:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-12-16 08:54:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1497. [2021-12-16 08:54:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 897 states have (on average 1.8004459308807135) internal successors, (1615), 1488 states have internal predecessors, (1615), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:54:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1639 transitions. [2021-12-16 08:54:57,767 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1639 transitions. Word has length 66 [2021-12-16 08:54:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:57,767 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 1639 transitions. [2021-12-16 08:54:57,768 INFO L471 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) [2021-12-16 08:54:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1639 transitions. [2021-12-16 08:54:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 08:54:57,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:57,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:57,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:57,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:57,977 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:57,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1745990217, now seen corresponding path program 1 times [2021-12-16 08:54:57,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:57,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702352890] [2021-12-16 08:54:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:57,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:57,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:57,980 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) [2021-12-16 08:54:57,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 08:54:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:58,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:54:58,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:58,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:54:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:58,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:58,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702352890] [2021-12-16 08:54:58,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702352890] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:54:58,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:54:58,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 08:54:58,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620120174] [2021-12-16 08:54:58,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:54:58,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 08:54:58,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 08:54:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 08:54:58,429 INFO L87 Difference]: Start difference. First operand 1497 states and 1639 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) [2021-12-16 08:54:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:58,564 INFO L93 Difference]: Finished difference Result 1509 states and 1657 transitions. [2021-12-16 08:54:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 08:54:58,564 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 [2021-12-16 08:54:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:58,567 INFO L225 Difference]: With dead ends: 1509 [2021-12-16 08:54:58,568 INFO L226 Difference]: Without dead ends: 1509 [2021-12-16 08:54:58,568 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:54:58,568 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 20 mSDsluCounter, 4327 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5775 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:58,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 5775 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:54:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-12-16 08:54:58,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1507. [2021-12-16 08:54:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 906 states have (on average 1.7991169977924946) internal successors, (1630), 1497 states have internal predecessors, (1630), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:54:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1654 transitions. [2021-12-16 08:54:58,583 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1654 transitions. Word has length 67 [2021-12-16 08:54:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:58,584 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1654 transitions. [2021-12-16 08:54:58,584 INFO L471 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) [2021-12-16 08:54:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1654 transitions. [2021-12-16 08:54:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-16 08:54:58,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:58,585 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:58,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:58,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:58,808 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:54:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash 483699518, now seen corresponding path program 2 times [2021-12-16 08:54:58,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:58,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951517272] [2021-12-16 08:54:58,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:54:58,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:58,810 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) [2021-12-16 08:54:58,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-16 08:54:59,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:54:59,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:54:59,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:54:59,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:59,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:54:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:59,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:59,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951517272] [2021-12-16 08:54:59,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951517272] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:54:59,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:54:59,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-16 08:54:59,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719544067] [2021-12-16 08:54:59,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:54:59,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 08:54:59,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 08:54:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-16 08:54:59,547 INFO L87 Difference]: Start difference. First operand 1507 states and 1654 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) [2021-12-16 08:55:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:55:00,079 INFO L93 Difference]: Finished difference Result 1528 states and 1686 transitions. [2021-12-16 08:55:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 08:55:00,079 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 [2021-12-16 08:55:00,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:55:00,082 INFO L225 Difference]: With dead ends: 1528 [2021-12-16 08:55:00,082 INFO L226 Difference]: Without dead ends: 1524 [2021-12-16 08:55:00,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2021-12-16 08:55:00,083 INFO L933 BasicCegarLoop]: 1451 mSDtfsCounter, 43 mSDsluCounter, 12993 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 14444 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 08:55:00,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 14444 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 08:55:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-12-16 08:55:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1516. [2021-12-16 08:55:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 915 states have (on average 1.794535519125683) internal successors, (1642), 1506 states have internal predecessors, (1642), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:55:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1666 transitions. [2021-12-16 08:55:00,099 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1666 transitions. Word has length 70 [2021-12-16 08:55:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:55:00,099 INFO L470 AbstractCegarLoop]: Abstraction has 1516 states and 1666 transitions. [2021-12-16 08:55:00,099 INFO L471 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) [2021-12-16 08:55:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1666 transitions. [2021-12-16 08:55:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-16 08:55:00,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:55:00,100 INFO L514 BasicCegarLoop]: 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] [2021-12-16 08:55:00,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-16 08:55:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:55:00,304 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:55:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:55:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash 436758686, now seen corresponding path program 3 times [2021-12-16 08:55:00,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:55:00,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056950761] [2021-12-16 08:55:00,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:55:00,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:55:00,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:55:00,306 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) [2021-12-16 08:55:00,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-16 08:55:00,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 08:55:00,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:55:00,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 08:55:00,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:55:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:55:01,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:55:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:55:01,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:55:01,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056950761] [2021-12-16 08:55:01,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056950761] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:55:01,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:55:01,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-16 08:55:01,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884373631] [2021-12-16 08:55:01,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:55:01,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 08:55:01,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:55:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 08:55:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-12-16 08:55:01,782 INFO L87 Difference]: Start difference. First operand 1516 states and 1666 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) [2021-12-16 08:55:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:55:04,438 INFO L93 Difference]: Finished difference Result 1558 states and 1742 transitions. [2021-12-16 08:55:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-16 08:55:04,438 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 [2021-12-16 08:55:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:55:04,441 INFO L225 Difference]: With dead ends: 1558 [2021-12-16 08:55:04,442 INFO L226 Difference]: Without dead ends: 1552 [2021-12-16 08:55:04,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 08:55:04,443 INFO L933 BasicCegarLoop]: 1455 mSDtfsCounter, 138 mSDsluCounter, 17387 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 18842 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:55:04,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 18842 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 08:55:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-12-16 08:55:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1534. [2021-12-16 08:55:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 933 states have (on average 1.7845659163987138) internal successors, (1665), 1524 states have internal predecessors, (1665), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:55:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1689 transitions. [2021-12-16 08:55:04,459 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1689 transitions. Word has length 76 [2021-12-16 08:55:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:55:04,459 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 1689 transitions. [2021-12-16 08:55:04,459 INFO L471 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) [2021-12-16 08:55:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1689 transitions. [2021-12-16 08:55:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-16 08:55:04,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:55:04,460 INFO L514 BasicCegarLoop]: 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] [2021-12-16 08:55:04,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-16 08:55:04,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:55:04,672 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:55:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:55:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash -357348514, now seen corresponding path program 4 times [2021-12-16 08:55:04,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:55:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86156783] [2021-12-16 08:55:04,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 08:55:04,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:55:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:55:04,674 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) [2021-12-16 08:55:04,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-16 08:55:04,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 08:55:04,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:55:05,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 08:55:05,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:55:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:55:05,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:55:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:55:06,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:55:06,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86156783] [2021-12-16 08:55:06,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86156783] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:55:06,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:55:06,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-12-16 08:55:06,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164867971] [2021-12-16 08:55:06,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:55:06,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-16 08:55:06,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:55:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-16 08:55:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 08:55:06,706 INFO L87 Difference]: Start difference. First operand 1534 states and 1689 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) [2021-12-16 08:55:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:55:17,593 INFO L93 Difference]: Finished difference Result 1614 states and 1822 transitions. [2021-12-16 08:55:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-12-16 08:55:17,593 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 [2021-12-16 08:55:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:55:17,596 INFO L225 Difference]: With dead ends: 1614 [2021-12-16 08:55:17,596 INFO L226 Difference]: Without dead ends: 1610 [2021-12-16 08:55:17,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2021-12-16 08:55:17,599 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 409 mSDsluCounter, 39413 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 40881 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:55:17,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 40881 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 3178 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 08:55:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-12-16 08:55:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1568. [2021-12-16 08:55:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 967 states have (on average 1.7693898655635987) internal successors, (1711), 1558 states have internal predecessors, (1711), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:55:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1735 transitions. [2021-12-16 08:55:17,617 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1735 transitions. Word has length 88 [2021-12-16 08:55:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:55:17,617 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 1735 transitions. [2021-12-16 08:55:17,617 INFO L471 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) [2021-12-16 08:55:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1735 transitions. [2021-12-16 08:55:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-16 08:55:17,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:55:17,618 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:55:17,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-16 08:55:17,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:55:17,842 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-16 08:55:17,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:55:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 182176190, now seen corresponding path program 5 times [2021-12-16 08:55:17,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:55:17,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512626132] [2021-12-16 08:55:17,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:55:17,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:55:17,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:55:17,843 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) [2021-12-16 08:55:17,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-16 08:55:18,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-12-16 08:55:18,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:55:18,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-16 08:55:19,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:55:19,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:55:19,142 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-16 08:55:19,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-12-16 08:55:19,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:55:19,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-16 08:55:20,072 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621)))) is different from true [2021-12-16 08:55:20,856 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 08:55:20,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-16 08:55:20,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-12-16 08:55:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2021-12-16 08:55:20,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:55:21,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:55:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512626132] [2021-12-16 08:55:21,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512626132] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:55:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [970735000] [2021-12-16 08:55:21,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:55:21,173 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-16 08:55:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-16 08:55:21,174 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) [2021-12-16 08:55:21,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process