./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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_BER_test7-2.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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:44:59,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:44:59,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:44:59,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:44:59,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:00,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:00,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:00,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:00,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:00,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:00,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:00,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:00,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:00,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:00,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:00,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:00,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:00,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:00,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:00,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:00,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:00,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:00,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:00,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:00,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:00,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:00,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:00,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:00,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:00,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:00,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:00,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:00,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:00,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:00,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:00,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:00,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:00,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:00,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:00,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:00,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:00,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:45:00,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:00,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:00,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:00,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:00,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:00,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:00,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:00,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:00,096 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:00,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:00,097 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:00,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:00,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:00,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:00,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:00,098 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:00,099 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:00,099 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:00,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:00,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:00,099 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:00,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:00,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:00,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:00,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:00,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:00,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:00,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:00,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:45:00,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:45:00,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:00,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2021-12-15 16:45:00,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:00,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:00,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:00,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:00,391 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:00,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-12-15 16:45:00,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf5281d5/f6c282babcec4954a537cd7d63fd5d44/FLAG7f35bc6cc [2021-12-15 16:45:00,994 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:00,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-12-15 16:45:01,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf5281d5/f6c282babcec4954a537cd7d63fd5d44/FLAG7f35bc6cc [2021-12-15 16:45:01,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf5281d5/f6c282babcec4954a537cd7d63fd5d44 [2021-12-15 16:45:01,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:01,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:01,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:01,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:01,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:01,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:01" (1/1) ... [2021-12-15 16:45:01,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d56525e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:01, skipping insertion in model container [2021-12-15 16:45:01,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:01" (1/1) ... [2021-12-15 16:45:01,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:01,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:01,904 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_BER_test7-2.i[33021,33034] [2021-12-15 16:45:02,013 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_BER_test7-2.i[44124,44137] [2021-12-15 16:45:02,014 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_BER_test7-2.i[44245,44258] [2021-12-15 16:45:02,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:02,036 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) [2021-12-15 16:45:02,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3490a3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:02, skipping insertion in model container [2021-12-15 16:45:02,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:02,037 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:45:02,039 INFO L158 Benchmark]: Toolchain (without parser) took 562.54ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.0MB in the beginning and 64.1MB in the end (delta: -19.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 16:45:02,040 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 30.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:02,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.73ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 64.1MB in the end (delta: -19.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 16:45:02,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 30.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.73ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 64.1MB in the end (delta: -19.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_BER_test7-2.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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:03,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:03,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:03,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:03,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:03,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:03,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:03,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:03,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:03,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:03,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:03,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:03,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:03,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:03,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:03,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:03,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:03,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:03,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:03,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:03,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:03,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:03,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:03,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:03,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:03,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:03,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:03,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:03,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:03,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:03,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:03,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:03,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:03,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:03,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:03,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:03,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:03,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:03,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:03,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:03,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:03,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:45:04,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:04,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:04,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:04,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:04,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:04,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:04,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:04,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:04,040 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:04,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:04,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:04,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:04,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:04,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:04,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:04,042 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:04,043 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:04,043 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:04,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:04,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:04,044 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:45:04,044 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:45:04,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:04,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:04,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:04,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:04,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:04,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:04,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:04,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:04,052 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:45:04,052 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:45:04,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:04,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:45:04,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2021-12-15 16:45:04,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:04,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:04,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:04,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:04,420 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:04,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-12-15 16:45:04,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0463e31/7d538f5ae27b45d7b3a7d30e8a89a7ad/FLAG95acd4941 [2021-12-15 16:45:05,103 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:05,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-12-15 16:45:05,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0463e31/7d538f5ae27b45d7b3a7d30e8a89a7ad/FLAG95acd4941 [2021-12-15 16:45:05,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0463e31/7d538f5ae27b45d7b3a7d30e8a89a7ad [2021-12-15 16:45:05,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:05,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:05,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:05,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:05,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:05,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:05" (1/1) ... [2021-12-15 16:45:05,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b95fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:05, skipping insertion in model container [2021-12-15 16:45:05,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:05" (1/1) ... [2021-12-15 16:45:05,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:05,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:05,804 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_BER_test7-2.i[33021,33034] [2021-12-15 16:45:05,925 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_BER_test7-2.i[44124,44137] [2021-12-15 16:45:05,932 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_BER_test7-2.i[44245,44258] [2021-12-15 16:45:05,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:05,974 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:45:05,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:06,009 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_BER_test7-2.i[33021,33034] [2021-12-15 16:45:06,052 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_BER_test7-2.i[44124,44137] [2021-12-15 16:45:06,053 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_BER_test7-2.i[44245,44258] [2021-12-15 16:45:06,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:06,068 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:45:06,098 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_BER_test7-2.i[33021,33034] [2021-12-15 16:45:06,177 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_BER_test7-2.i[44124,44137] [2021-12-15 16:45:06,178 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_BER_test7-2.i[44245,44258] [2021-12-15 16:45:06,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:06,225 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:45:06,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06 WrapperNode [2021-12-15 16:45:06,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:06,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:06,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:45:06,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:45:06,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,326 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-12-15 16:45:06,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:06,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:45:06,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:45:06,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:45:06,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:45:06,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:45:06,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:45:06,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:45:06,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (1/1) ... [2021-12-15 16:45:06,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:06,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:45:06,504 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) [2021-12-15 16:45:06,520 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 [2021-12-15 16:45:06,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:45:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:45:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:45:06,547 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:45:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:45:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:45:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:45:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:45:06,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:45:06,819 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:45:06,821 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:45:06,824 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:45:11,149 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:45:11,160 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:45:11,161 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-15 16:45:11,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:45:11 BoogieIcfgContainer [2021-12-15 16:45:11,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:45:11,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:45:11,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:45:11,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:45:11,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:45:05" (1/3) ... [2021-12-15 16:45:11,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b97da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:45:11, skipping insertion in model container [2021-12-15 16:45:11,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:06" (2/3) ... [2021-12-15 16:45:11,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b97da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:45:11, skipping insertion in model container [2021-12-15 16:45:11,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:45:11" (3/3) ... [2021-12-15 16:45:11,171 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2021-12-15 16:45:11,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:45:11,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-12-15 16:45:11,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:45:11,217 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 [2021-12-15 16:45:11,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-12-15 16:45:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:45:11,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:11,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:45:11,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-12-15 16:45:11,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:11,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761371246] [2021-12-15 16:45:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:11,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:11,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:11,277 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) [2021-12-15 16:45:11,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 16:45:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:11,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:11,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:11,524 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 [2021-12-15 16:45:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:11,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:11,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:11,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761371246] [2021-12-15 16:45:11,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761371246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:11,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:11,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:11,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198710433] [2021-12-15 16:45:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:11,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:11,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:11,583 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:13,793 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-12-15 16:45:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-15 16:45:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:13,812 INFO L225 Difference]: With dead ends: 1417 [2021-12-15 16:45:13,813 INFO L226 Difference]: Without dead ends: 1415 [2021-12-15 16:45:13,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:13,817 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:13,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-15 16:45:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-12-15 16:45:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-12-15 16:45:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-12-15 16:45:13,895 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-12-15 16:45:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:13,896 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-12-15 16:45:13,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-12-15 16:45:13,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:45:13,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:13,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:45:13,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 16:45:14,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:14,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:14,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:14,107 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-12-15 16:45:14,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:14,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444493980] [2021-12-15 16:45:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:14,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:14,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:14,109 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) [2021-12-15 16:45:14,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 16:45:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:14,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:14,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:14,243 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 [2021-12-15 16:45:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:14,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:14,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:14,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444493980] [2021-12-15 16:45:14,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444493980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:14,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:14,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:14,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863907629] [2021-12-15 16:45:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:14,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:14,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:14,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:14,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:14,266 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:17,121 INFO L93 Difference]: Finished difference Result 1819 states and 1926 transitions. [2021-12-15 16:45:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-15 16:45:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:17,128 INFO L225 Difference]: With dead ends: 1819 [2021-12-15 16:45:17,128 INFO L226 Difference]: Without dead ends: 1819 [2021-12-15 16:45:17,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:17,129 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 629 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:17,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1690 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-15 16:45:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-12-15 16:45:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1431. [2021-12-15 16:45:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 812 states have (on average 2.0985221674876846) internal successors, (1704), 1426 states have internal predecessors, (1704), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1710 transitions. [2021-12-15 16:45:17,164 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1710 transitions. Word has length 3 [2021-12-15 16:45:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 1710 transitions. [2021-12-15 16:45:17,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1710 transitions. [2021-12-15 16:45:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 16:45:17,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:17,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:17,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-15 16:45:17,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:17,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-12-15 16:45:17,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:17,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795963043] [2021-12-15 16:45:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:17,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:17,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:17,377 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) [2021-12-15 16:45:17,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 16:45:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:17,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:45:17,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:17,536 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 [2021-12-15 16:45:17,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:45:17,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 16:45:17,631 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 [2021-12-15 16:45:17,659 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 16:45:17,660 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 [2021-12-15 16:45:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:17,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:17,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:17,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795963043] [2021-12-15 16:45:17,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795963043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:17,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:17,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:17,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800862608] [2021-12-15 16:45:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:17,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:17,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:17,692 INFO L87 Difference]: Start difference. First operand 1431 states and 1710 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-15 16:45:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:20,911 INFO L93 Difference]: Finished difference Result 1609 states and 1899 transitions. [2021-12-15 16:45:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:20,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-15 16:45:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:20,918 INFO L225 Difference]: With dead ends: 1609 [2021-12-15 16:45:20,918 INFO L226 Difference]: Without dead ends: 1609 [2021-12-15 16:45:20,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:20,920 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1450 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:20,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 507 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-15 16:45:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-12-15 16:45:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1219. [2021-12-15 16:45:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 610 states have (on average 2.09672131147541) internal successors, (1279), 1214 states have internal predecessors, (1279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1285 transitions. [2021-12-15 16:45:20,949 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1285 transitions. Word has length 7 [2021-12-15 16:45:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:20,949 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1285 transitions. [2021-12-15 16:45:20,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-15 16:45:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1285 transitions. [2021-12-15 16:45:20,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:45:20,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:20,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:20,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:21,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:21,162 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-12-15 16:45:21,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:21,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413861632] [2021-12-15 16:45:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:21,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:21,165 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) [2021-12-15 16:45:21,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 16:45:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:21,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:21,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:21,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:45:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:21,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:21,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:21,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413861632] [2021-12-15 16:45:21,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413861632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:21,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:21,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:21,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479488724] [2021-12-15 16:45:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:21,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:21,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:21,327 INFO L87 Difference]: Start difference. First operand 1219 states and 1285 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:23,229 INFO L93 Difference]: Finished difference Result 1548 states and 1643 transitions. [2021-12-15 16:45:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 16:45:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:23,236 INFO L225 Difference]: With dead ends: 1548 [2021-12-15 16:45:23,236 INFO L226 Difference]: Without dead ends: 1548 [2021-12-15 16:45:23,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:23,238 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 973 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:23,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1476 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-15 16:45:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-12-15 16:45:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1172. [2021-12-15 16:45:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 610 states have (on average 2.019672131147541) internal successors, (1232), 1167 states have internal predecessors, (1232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1238 transitions. [2021-12-15 16:45:23,260 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1238 transitions. Word has length 8 [2021-12-15 16:45:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:23,260 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1238 transitions. [2021-12-15 16:45:23,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1238 transitions. [2021-12-15 16:45:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:45:23,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:23,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:23,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:23,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:23,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:23,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-12-15 16:45:23,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:23,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143726589] [2021-12-15 16:45:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:23,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:23,473 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) [2021-12-15 16:45:23,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 16:45:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:23,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:23,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:23,611 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 [2021-12-15 16:45:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:23,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:23,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:23,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143726589] [2021-12-15 16:45:23,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143726589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:23,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:23,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:23,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141650560] [2021-12-15 16:45:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:23,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:23,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:23,637 INFO L87 Difference]: Start difference. First operand 1172 states and 1238 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:26,068 INFO L93 Difference]: Finished difference Result 1627 states and 1725 transitions. [2021-12-15 16:45:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:26,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 16:45:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:26,073 INFO L225 Difference]: With dead ends: 1627 [2021-12-15 16:45:26,073 INFO L226 Difference]: Without dead ends: 1627 [2021-12-15 16:45:26,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:26,074 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 674 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:26,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1855 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-15 16:45:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-12-15 16:45:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1194. [2021-12-15 16:45:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 642 states have (on average 2.0062305295950154) internal successors, (1288), 1189 states have internal predecessors, (1288), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1294 transitions. [2021-12-15 16:45:26,101 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1294 transitions. Word has length 8 [2021-12-15 16:45:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1294 transitions. [2021-12-15 16:45:26,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1294 transitions. [2021-12-15 16:45:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:45:26,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:26,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:26,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:26,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:26,312 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-12-15 16:45:26,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:26,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184762224] [2021-12-15 16:45:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:26,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:26,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:26,315 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) [2021-12-15 16:45:26,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 16:45:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:26,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:45:26,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:26,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:26,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:26,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184762224] [2021-12-15 16:45:26,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184762224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:26,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:26,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:26,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660882637] [2021-12-15 16:45:26,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:26,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:26,517 INFO L87 Difference]: Start difference. First operand 1194 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:27,275 INFO L93 Difference]: Finished difference Result 1841 states and 1984 transitions. [2021-12-15 16:45:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 16:45:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 16:45:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:27,281 INFO L225 Difference]: With dead ends: 1841 [2021-12-15 16:45:27,282 INFO L226 Difference]: Without dead ends: 1841 [2021-12-15 16:45:27,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:27,283 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 754 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:27,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3645 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 16:45:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-12-15 16:45:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1439. [2021-12-15 16:45:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 887 states have (on average 1.9706877113866967) internal successors, (1748), 1434 states have internal predecessors, (1748), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1754 transitions. [2021-12-15 16:45:27,321 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1754 transitions. Word has length 11 [2021-12-15 16:45:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:27,322 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1754 transitions. [2021-12-15 16:45:27,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1754 transitions. [2021-12-15 16:45:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:45:27,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:27,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:27,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:27,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:27,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-12-15 16:45:27,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:27,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196344210] [2021-12-15 16:45:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:27,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:27,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:27,538 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) [2021-12-15 16:45:27,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 16:45:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:27,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:27,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:27,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:27,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196344210] [2021-12-15 16:45:27,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196344210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:27,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:27,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:27,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459129070] [2021-12-15 16:45:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:27,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:27,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:27,714 INFO L87 Difference]: Start difference. First operand 1439 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-12-15 16:45:27,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:27,744 INFO L93 Difference]: Finished difference Result 1601 states and 1902 transitions. [2021-12-15 16:45:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:27,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2021-12-15 16:45:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:27,751 INFO L225 Difference]: With dead ends: 1601 [2021-12-15 16:45:27,751 INFO L226 Difference]: Without dead ends: 1601 [2021-12-15 16:45:27,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:27,753 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 583 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1998 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 [2021-12-15 16:45:27,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1998 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-12-15 16:45:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1379. [2021-12-15 16:45:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 851 states have (on average 1.9529964747356052) internal successors, (1662), 1374 states have internal predecessors, (1662), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1668 transitions. [2021-12-15 16:45:27,783 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1668 transitions. Word has length 13 [2021-12-15 16:45:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:27,784 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 1668 transitions. [2021-12-15 16:45:27,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-12-15 16:45:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1668 transitions. [2021-12-15 16:45:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 16:45:27,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:27,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:27,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:27,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:27,994 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:27,995 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-12-15 16:45:27,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:27,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145959045] [2021-12-15 16:45:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:27,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:27,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:27,997 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) [2021-12-15 16:45:27,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-15 16:45:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:28,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:28,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:28,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:28,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145959045] [2021-12-15 16:45:28,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145959045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:28,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:28,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:28,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846324293] [2021-12-15 16:45:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:28,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:28,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:28,175 INFO L87 Difference]: Start difference. First operand 1379 states and 1668 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-12-15 16:45:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:28,256 INFO L93 Difference]: Finished difference Result 1573 states and 1846 transitions. [2021-12-15 16:45:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-12-15 16:45:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:28,261 INFO L225 Difference]: With dead ends: 1573 [2021-12-15 16:45:28,261 INFO L226 Difference]: Without dead ends: 1573 [2021-12-15 16:45:28,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:28,262 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 554 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:28,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3083 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:28,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-12-15 16:45:28,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1349. [2021-12-15 16:45:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 835 states have (on average 1.9209580838323352) internal successors, (1604), 1344 states have internal predecessors, (1604), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1610 transitions. [2021-12-15 16:45:28,296 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1610 transitions. Word has length 15 [2021-12-15 16:45:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:28,296 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1610 transitions. [2021-12-15 16:45:28,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-12-15 16:45:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1610 transitions. [2021-12-15 16:45:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 16:45:28,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:28,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:28,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-15 16:45:28,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:28,510 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-12-15 16:45:28,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:28,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941411922] [2021-12-15 16:45:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:28,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:28,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:28,512 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) [2021-12-15 16:45:28,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-15 16:45:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:28,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 16:45:28,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:28,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:45:28,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:45:28,725 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-12-15 16:45:28,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 36 [2021-12-15 16:45:28,766 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-15 16:45:28,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-12-15 16:45:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:28,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:28,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:28,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941411922] [2021-12-15 16:45:28,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941411922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:28,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:28,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:28,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954074324] [2021-12-15 16:45:28,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:28,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:28,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:28,809 INFO L87 Difference]: Start difference. First operand 1349 states and 1610 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-15 16:45:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:29,948 INFO L93 Difference]: Finished difference Result 1785 states and 2105 transitions. [2021-12-15 16:45:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-12-15 16:45:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:29,952 INFO L225 Difference]: With dead ends: 1785 [2021-12-15 16:45:29,952 INFO L226 Difference]: Without dead ends: 1785 [2021-12-15 16:45:29,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:29,953 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 422 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:29,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 3244 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 39 Unchecked, 1.1s Time] [2021-12-15 16:45:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-12-15 16:45:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1348. [2021-12-15 16:45:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2021-12-15 16:45:29,980 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 16 [2021-12-15 16:45:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:29,980 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2021-12-15 16:45:29,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-15 16:45:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2021-12-15 16:45:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 16:45:29,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:29,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:30,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:30,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:30,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-12-15 16:45:30,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:30,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622955541] [2021-12-15 16:45:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:30,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:30,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:30,208 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) [2021-12-15 16:45:30,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-15 16:45:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:30,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:30,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:30,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:30,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622955541] [2021-12-15 16:45:30,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622955541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:30,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:30,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:30,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681928029] [2021-12-15 16:45:30,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:30,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:30,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:30,386 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-15 16:45:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:30,410 INFO L93 Difference]: Finished difference Result 1288 states and 1522 transitions. [2021-12-15 16:45:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-12-15 16:45:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:30,415 INFO L225 Difference]: With dead ends: 1288 [2021-12-15 16:45:30,415 INFO L226 Difference]: Without dead ends: 1288 [2021-12-15 16:45:30,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:30,416 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1087 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1125 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 [2021-12-15 16:45:30,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 1125 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-12-15 16:45:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-12-15 16:45:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 798 states have (on average 1.899749373433584) internal successors, (1516), 1283 states have internal predecessors, (1516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1522 transitions. [2021-12-15 16:45:30,439 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1522 transitions. Word has length 18 [2021-12-15 16:45:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:30,439 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1522 transitions. [2021-12-15 16:45:30,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-15 16:45:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1522 transitions. [2021-12-15 16:45:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 16:45:30,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:30,441 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] [2021-12-15 16:45:30,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:30,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:30,660 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-12-15 16:45:30,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:30,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477566759] [2021-12-15 16:45:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:30,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:30,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:30,662 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) [2021-12-15 16:45:30,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-15 16:45:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:30,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:30,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:30,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:30,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477566759] [2021-12-15 16:45:30,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477566759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:30,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:30,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:30,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686458457] [2021-12-15 16:45:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:30,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:30,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:30,874 INFO L87 Difference]: Start difference. First operand 1288 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-12-15 16:45:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:30,948 INFO L93 Difference]: Finished difference Result 1260 states and 1466 transitions. [2021-12-15 16:45:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-12-15 16:45:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:30,953 INFO L225 Difference]: With dead ends: 1260 [2021-12-15 16:45:30,953 INFO L226 Difference]: Without dead ends: 1260 [2021-12-15 16:45:30,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:30,954 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1058 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:30,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 2131 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-12-15 16:45:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2021-12-15 16:45:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 782 states have (on average 1.8644501278772379) internal successors, (1458), 1253 states have internal predecessors, (1458), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1464 transitions. [2021-12-15 16:45:30,974 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1464 transitions. Word has length 20 [2021-12-15 16:45:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:30,975 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 1464 transitions. [2021-12-15 16:45:30,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-12-15 16:45:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1464 transitions. [2021-12-15 16:45:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 16:45:30,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:30,976 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] [2021-12-15 16:45:30,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:31,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:31,191 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-12-15 16:45:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:31,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942806352] [2021-12-15 16:45:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:31,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:31,194 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) [2021-12-15 16:45:31,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-15 16:45:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:31,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:31,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:31,395 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 [2021-12-15 16:45:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:45:31,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:31,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942806352] [2021-12-15 16:45:31,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942806352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:31,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:31,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:31,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105657224] [2021-12-15 16:45:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:31,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:31,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:31,473 INFO L87 Difference]: Start difference. First operand 1258 states and 1464 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-15 16:45:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:31,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:31,625 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 104 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:31,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 68 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:31,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-15 16:45:31,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:45:31,828 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 16:45:31,830 INFO L158 Benchmark]: Toolchain (without parser) took 26458.98ms. Allocated memory was 48.2MB in the beginning and 136.3MB in the end (delta: 88.1MB). Free memory was 31.9MB in the beginning and 77.6MB in the end (delta: -45.7MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2021-12-15 16:45:31,830 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:31,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 852.23ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 31.8MB in the beginning and 33.1MB in the end (delta: -1.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-12-15 16:45:31,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.08ms. Allocated memory is still 60.8MB. Free memory was 33.1MB in the beginning and 25.6MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 16:45:31,831 INFO L158 Benchmark]: Boogie Preprocessor took 143.76ms. Allocated memory is still 60.8MB. Free memory was 25.6MB in the beginning and 30.1MB in the end (delta: -4.5MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-12-15 16:45:31,831 INFO L158 Benchmark]: RCFGBuilder took 4690.89ms. Allocated memory was 60.8MB in the beginning and 113.2MB in the end (delta: 52.4MB). Free memory was 30.1MB in the beginning and 54.3MB in the end (delta: -24.3MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2021-12-15 16:45:31,832 INFO L158 Benchmark]: TraceAbstraction took 20663.76ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 53.6MB in the beginning and 77.6MB in the end (delta: -24.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:31,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 852.23ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 31.8MB in the beginning and 33.1MB in the end (delta: -1.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.08ms. Allocated memory is still 60.8MB. Free memory was 33.1MB in the beginning and 25.6MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 143.76ms. Allocated memory is still 60.8MB. Free memory was 25.6MB in the beginning and 30.1MB in the end (delta: -4.5MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * RCFGBuilder took 4690.89ms. Allocated memory was 60.8MB in the beginning and 113.2MB in the end (delta: 52.4MB). Free memory was 30.1MB in the beginning and 54.3MB in the end (delta: -24.3MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20663.76ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 53.6MB in the beginning and 77.6MB in the end (delta: -24.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:45:31,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable