./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:53:18,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:53:18,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:53:18,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:53:18,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:53:18,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:53:18,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:53:18,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:53:18,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:53:18,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:53:18,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:53:18,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:53:18,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:53:18,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:53:18,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:53:18,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:53:18,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:53:18,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:53:18,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:53:18,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:53:18,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:53:18,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:53:18,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:53:18,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:53:18,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:53:18,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:53:18,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:53:18,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:53:18,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:53:18,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:53:18,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:53:18,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:53:18,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:53:18,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:53:18,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:53:18,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:53:18,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:53:18,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:53:18,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:53:18,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:53:18,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:53:18,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 08:53:18,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:53:18,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:53:18,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:53:18,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:53:18,145 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:53:18,145 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:53:18,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:53:18,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:53:18,146 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:53:18,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:53:18,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:53:18,147 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:53:18,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:53:18,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:53:18,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:53:18,148 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:53:18,148 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:53:18,148 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:53:18,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:53:18,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:53:18,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:53:18,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:53:18,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:53:18,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:53:18,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:53:18,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:53:18,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:53:18,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:53:18,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 08:53:18,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 08:53:18,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:53:18,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-12-16 08:53:18,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:53:18,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:53:18,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:53:18,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:53:18,389 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:53:18,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-12-16 08:53:18,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f281e8c53/6d5080001c9f4348b3cd016ea8ff56a8/FLAGf07514085 [2021-12-16 08:53:18,901 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:53:18,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-12-16 08:53:18,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f281e8c53/6d5080001c9f4348b3cd016ea8ff56a8/FLAGf07514085 [2021-12-16 08:53:19,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f281e8c53/6d5080001c9f4348b3cd016ea8ff56a8 [2021-12-16 08:53:19,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:53:19,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:53:19,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:53:19,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:53:19,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:53:19,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:53:19" (1/1) ... [2021-12-16 08:53:19,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac82d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:19, skipping insertion in model container [2021-12-16 08:53:19,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:53:19" (1/1) ... [2021-12-16 08:53:19,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:53:19,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:53:19,589 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_OAT_test9-2.i[33021,33034] [2021-12-16 08:53:19,751 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_OAT_test9-2.i[84583,84596] [2021-12-16 08:53:19,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:53:19,765 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-16 08:53:19,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66ca1864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:19, skipping insertion in model container [2021-12-16 08:53:19,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:53:19,766 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 08:53:19,768 INFO L158 Benchmark]: Toolchain (without parser) took 558.60ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 58.2MB in the beginning and 79.8MB in the end (delta: -21.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 08:53:19,768 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 08:53:19,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.91ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 58.2MB in the beginning and 79.8MB in the end (delta: -21.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 08:53:19,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.91ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 58.2MB in the beginning and 79.8MB in the end (delta: -21.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_OAT_test9-2.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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:53:21,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:53:21,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:53:21,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:53:21,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:53:21,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:53:21,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:53:21,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:53:21,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:53:21,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:53:21,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:53:21,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:53:21,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:53:21,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:53:21,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:53:21,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:53:21,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:53:21,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:53:21,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:53:21,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:53:21,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:53:21,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:53:21,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:53:21,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:53:21,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:53:21,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:53:21,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:53:21,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:53:21,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:53:21,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:53:21,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:53:21,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:53:21,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:53:21,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:53:21,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:53:21,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:53:21,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:53:21,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:53:21,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:53:21,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:53:21,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:53:21,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 08:53:21,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:53:21,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:53:21,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:53:21,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:53:21,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:53:21,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:53:21,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:53:21,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:53:21,453 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:53:21,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:53:21,454 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:53:21,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:53:21,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:53:21,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:53:21,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:53:21,454 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 08:53:21,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:53:21,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:53:21,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:53:21,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:53:21,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:53:21,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:53:21,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:53:21,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:53:21,463 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 08:53:21,463 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 08:53:21,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:53:21,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 08:53:21,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-12-16 08:53:21,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:53:21,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:53:21,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:53:21,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:53:21,737 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:53:21,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-12-16 08:53:21,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c70c7eaf/8ab78310ae394808b1382206282c8552/FLAGfcd8af7d9 [2021-12-16 08:53:22,315 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:53:22,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-12-16 08:53:22,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c70c7eaf/8ab78310ae394808b1382206282c8552/FLAGfcd8af7d9 [2021-12-16 08:53:22,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c70c7eaf/8ab78310ae394808b1382206282c8552 [2021-12-16 08:53:22,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:53:22,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:53:22,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:53:22,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:53:22,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:53:22,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:53:22" (1/1) ... [2021-12-16 08:53:22,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7338b8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:22, skipping insertion in model container [2021-12-16 08:53:22,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:53:22" (1/1) ... [2021-12-16 08:53:22,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:53:22,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:53:23,003 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_OAT_test9-2.i[33021,33034] [2021-12-16 08:53:23,210 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_OAT_test9-2.i[84583,84596] [2021-12-16 08:53:23,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:53:23,228 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 08:53:23,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:53:23,275 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_OAT_test9-2.i[33021,33034] [2021-12-16 08:53:23,334 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_OAT_test9-2.i[84583,84596] [2021-12-16 08:53:23,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:53:23,346 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 08:53:23,361 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_OAT_test9-2.i[33021,33034] [2021-12-16 08:53:23,427 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_OAT_test9-2.i[84583,84596] [2021-12-16 08:53:23,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:53:23,461 INFO L208 MainTranslator]: Completed translation [2021-12-16 08:53:23,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23 WrapperNode [2021-12-16 08:53:23,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:53:23,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 08:53:23,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 08:53:23,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 08:53:23,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,623 INFO L137 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3034 [2021-12-16 08:53:23,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 08:53:23,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 08:53:23,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 08:53:23,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 08:53:23,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 08:53:23,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 08:53:23,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 08:53:23,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 08:53:23,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (1/1) ... [2021-12-16 08:53:23,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:53:23,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:53:23,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 08:53:23,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 08:53:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 08:53:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 08:53:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 08:53:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 08:53:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 08:53:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 08:53:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 08:53:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 08:53:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 08:53:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 08:53:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 08:53:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 08:53:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 08:53:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 08:53:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 08:53:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 08:53:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 08:53:24,025 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 08:53:24,027 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 08:53:24,029 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 08:53:27,794 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 08:53:27,810 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 08:53:27,811 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-12-16 08:53:27,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:53:27 BoogieIcfgContainer [2021-12-16 08:53:27,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 08:53:27,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 08:53:27,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 08:53:27,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 08:53:27,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:53:22" (1/3) ... [2021-12-16 08:53:27,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9456f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:53:27, skipping insertion in model container [2021-12-16 08:53:27,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:53:23" (2/3) ... [2021-12-16 08:53:27,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9456f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:53:27, skipping insertion in model container [2021-12-16 08:53:27,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:53:27" (3/3) ... [2021-12-16 08:53:27,820 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-2.i [2021-12-16 08:53:27,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 08:53:27,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-12-16 08:53:27,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 08:53:27,859 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 08:53:27,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-12-16 08:53:27,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-16 08:53:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 08:53:27,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:27,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 08:53:27,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-12-16 08:53:27,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:27,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822695516] [2021-12-16 08:53:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:27,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:27,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:27,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:27,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 08:53:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:28,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:53:28,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:28,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:28,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:28,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:28,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822695516] [2021-12-16 08:53:28,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822695516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:28,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:28,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:53:28,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593464542] [2021-12-16 08:53:28,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:28,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:28,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:28,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:28,172 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2021-12-16 08:53:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:30,211 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2021-12-16 08:53:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:30,213 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 [2021-12-16 08:53:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:30,234 INFO L225 Difference]: With dead ends: 2235 [2021-12-16 08:53:30,235 INFO L226 Difference]: Without dead ends: 2233 [2021-12-16 08:53:30,236 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 [2021-12-16 08:53:30,238 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:30,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 08:53:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-12-16 08:53:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2021-12-16 08:53:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-16 08:53:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2021-12-16 08:53:30,486 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2021-12-16 08:53:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:30,486 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2021-12-16 08:53:30,486 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) [2021-12-16 08:53:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2021-12-16 08:53:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 08:53:30,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:30,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 08:53:30,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:30,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:30,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-12-16 08:53:30,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:30,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631339151] [2021-12-16 08:53:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:30,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:30,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:30,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:30,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 08:53:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:30,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:53:30,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:30,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:30,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:30,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:30,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631339151] [2021-12-16 08:53:30,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631339151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:30,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:30,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:53:30,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425196025] [2021-12-16 08:53:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:30,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:30,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:30,839 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 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) [2021-12-16 08:53:33,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:33,400 INFO L93 Difference]: Finished difference Result 3463 states and 5553 transitions. [2021-12-16 08:53:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:33,401 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 [2021-12-16 08:53:33,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:33,415 INFO L225 Difference]: With dead ends: 3463 [2021-12-16 08:53:33,415 INFO L226 Difference]: Without dead ends: 3463 [2021-12-16 08:53:33,415 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 [2021-12-16 08:53:33,417 INFO L933 BasicCegarLoop]: 3417 mSDtfsCounter, 1440 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:33,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1940 Valid, 5500 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 08:53:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2021-12-16 08:53:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3177. [2021-12-16 08:53:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 1655 states have (on average 2.015105740181269) internal successors, (3335), 3171 states have internal predecessors, (3335), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5341 transitions. [2021-12-16 08:53:33,621 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5341 transitions. Word has length 3 [2021-12-16 08:53:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:33,621 INFO L470 AbstractCegarLoop]: Abstraction has 3177 states and 5341 transitions. [2021-12-16 08:53:33,621 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) [2021-12-16 08:53:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5341 transitions. [2021-12-16 08:53:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 08:53:33,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:33,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:33,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:33,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:33,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-12-16 08:53:33,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364322946] [2021-12-16 08:53:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:33,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:33,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:33,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 08:53:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:33,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:53:33,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:33,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:33,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:53:34,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:53:34,068 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:53:34,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:53:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:34,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:34,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364322946] [2021-12-16 08:53:34,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364322946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:34,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:34,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:34,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372482725] [2021-12-16 08:53:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:34,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:34,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:34,095 INFO L87 Difference]: Start difference. First operand 3177 states and 5341 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) [2021-12-16 08:53:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:37,699 INFO L93 Difference]: Finished difference Result 3344 states and 5516 transitions. [2021-12-16 08:53:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:53:37,700 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 [2021-12-16 08:53:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:37,712 INFO L225 Difference]: With dead ends: 3344 [2021-12-16 08:53:37,712 INFO L226 Difference]: Without dead ends: 3344 [2021-12-16 08:53:37,712 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 [2021-12-16 08:53:37,715 INFO L933 BasicCegarLoop]: 2363 mSDtfsCounter, 4223 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:37,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4726 Valid, 2444 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-16 08:53:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2021-12-16 08:53:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2044. [2021-12-16 08:53:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1032 states have (on average 2.0300387596899223) internal successors, (2095), 2038 states have internal predecessors, (2095), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-16 08:53:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3101 transitions. [2021-12-16 08:53:37,908 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3101 transitions. Word has length 7 [2021-12-16 08:53:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:37,909 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 3101 transitions. [2021-12-16 08:53:37,909 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) [2021-12-16 08:53:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3101 transitions. [2021-12-16 08:53:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:53:37,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:37,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:37,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:38,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:38,119 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-12-16 08:53:38,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:38,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161683325] [2021-12-16 08:53:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:38,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:38,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:38,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:38,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 08:53:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:38,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:53:38,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:38,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:38,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:38,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:38,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161683325] [2021-12-16 08:53:38,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161683325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:38,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:38,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:53:38,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764655727] [2021-12-16 08:53:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:38,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:38,274 INFO L87 Difference]: Start difference. First operand 2044 states and 3101 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) [2021-12-16 08:53:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:40,122 INFO L93 Difference]: Finished difference Result 3210 states and 5288 transitions. [2021-12-16 08:53:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:40,123 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 [2021-12-16 08:53:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:40,135 INFO L225 Difference]: With dead ends: 3210 [2021-12-16 08:53:40,135 INFO L226 Difference]: Without dead ends: 3210 [2021-12-16 08:53:40,136 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 [2021-12-16 08:53:40,137 INFO L933 BasicCegarLoop]: 4866 mSDtfsCounter, 1804 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 7123 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:40,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2307 Valid, 7123 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 08:53:40,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-12-16 08:53:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 1997. [2021-12-16 08:53:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1032 states have (on average 1.9844961240310077) internal successors, (2048), 1991 states have internal predecessors, (2048), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-16 08:53:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3054 transitions. [2021-12-16 08:53:40,326 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3054 transitions. Word has length 8 [2021-12-16 08:53:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:40,326 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 3054 transitions. [2021-12-16 08:53:40,326 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) [2021-12-16 08:53:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3054 transitions. [2021-12-16 08:53:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:53:40,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:40,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:40,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:40,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:40,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:40,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-12-16 08:53:40,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:40,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608191381] [2021-12-16 08:53:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:40,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:40,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:40,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:40,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 08:53:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:40,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:53:40,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:40,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:40,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:40,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608191381] [2021-12-16 08:53:40,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608191381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:40,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:40,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:53:40,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550723278] [2021-12-16 08:53:40,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:40,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:40,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:40,674 INFO L87 Difference]: Start difference. First operand 1997 states and 3054 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) [2021-12-16 08:53:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:43,021 INFO L93 Difference]: Finished difference Result 3275 states and 5356 transitions. [2021-12-16 08:53:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:43,022 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 [2021-12-16 08:53:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:43,035 INFO L225 Difference]: With dead ends: 3275 [2021-12-16 08:53:43,036 INFO L226 Difference]: Without dead ends: 3275 [2021-12-16 08:53:43,036 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 [2021-12-16 08:53:43,036 INFO L933 BasicCegarLoop]: 5058 mSDtfsCounter, 1489 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7481 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:43,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 7481 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 08:53:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2021-12-16 08:53:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2019. [2021-12-16 08:53:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1064 states have (on average 1.9774436090225564) internal successors, (2104), 2013 states have internal predecessors, (2104), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-16 08:53:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3110 transitions. [2021-12-16 08:53:43,231 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3110 transitions. Word has length 8 [2021-12-16 08:53:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:43,232 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 3110 transitions. [2021-12-16 08:53:43,232 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) [2021-12-16 08:53:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3110 transitions. [2021-12-16 08:53:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 08:53:43,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:43,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:43,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:43,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:43,441 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2021-12-16 08:53:43,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:43,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334317690] [2021-12-16 08:53:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:43,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:43,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:43,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 08:53:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:43,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:53:43,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:43,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:43,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:43,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334317690] [2021-12-16 08:53:43,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334317690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:43,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:43,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:43,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789830281] [2021-12-16 08:53:43,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:43,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:43,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:43,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:43,606 INFO L87 Difference]: Start difference. First operand 2019 states and 3110 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:53:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:43,826 INFO L93 Difference]: Finished difference Result 3486 states and 5612 transitions. [2021-12-16 08:53:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 08:53:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:43,840 INFO L225 Difference]: With dead ends: 3486 [2021-12-16 08:53:43,840 INFO L226 Difference]: Without dead ends: 3486 [2021-12-16 08:53:43,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:43,841 INFO L933 BasicCegarLoop]: 3606 mSDtfsCounter, 1560 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6493 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:43,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 6493 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 08:53:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2021-12-16 08:53:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3193. [2021-12-16 08:53:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 1738 states have (on average 1.9568469505178365) internal successors, (3401), 3187 states have internal predecessors, (3401), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 5407 transitions. [2021-12-16 08:53:44,045 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 5407 transitions. Word has length 11 [2021-12-16 08:53:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:44,045 INFO L470 AbstractCegarLoop]: Abstraction has 3193 states and 5407 transitions. [2021-12-16 08:53:44,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:53:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 5407 transitions. [2021-12-16 08:53:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 08:53:44,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:44,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:44,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:44,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:44,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-12-16 08:53:44,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:44,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473702828] [2021-12-16 08:53:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:44,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:44,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:44,258 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:44,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 08:53:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:44,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:53:44,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:44,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:44,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:44,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473702828] [2021-12-16 08:53:44,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473702828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:44,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:44,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:44,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633705414] [2021-12-16 08:53:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:44,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:44,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:44,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:44,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:44,403 INFO L87 Difference]: Start difference. First operand 3193 states and 5407 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) [2021-12-16 08:53:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:44,449 INFO L93 Difference]: Finished difference Result 3347 states and 5547 transitions. [2021-12-16 08:53:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:44,449 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 [2021-12-16 08:53:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:44,461 INFO L225 Difference]: With dead ends: 3347 [2021-12-16 08:53:44,462 INFO L226 Difference]: Without dead ends: 3347 [2021-12-16 08:53:44,462 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 [2021-12-16 08:53:44,463 INFO L933 BasicCegarLoop]: 3202 mSDtfsCounter, 1394 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:44,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1894 Valid, 4519 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:53:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-12-16 08:53:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3133. [2021-12-16 08:53:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 1702 states have (on average 1.9477085781433607) internal successors, (3315), 3127 states have internal predecessors, (3315), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 5321 transitions. [2021-12-16 08:53:44,660 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 5321 transitions. Word has length 13 [2021-12-16 08:53:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:44,661 INFO L470 AbstractCegarLoop]: Abstraction has 3133 states and 5321 transitions. [2021-12-16 08:53:44,661 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) [2021-12-16 08:53:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 5321 transitions. [2021-12-16 08:53:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 08:53:44,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:44,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:44,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:44,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:44,870 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2021-12-16 08:53:44,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:44,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032317648] [2021-12-16 08:53:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:44,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:44,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:44,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 08:53:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:44,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:53:45,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:53:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 08:53:45,056 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-12-16 08:53:45,056 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 [2021-12-16 08:53:45,091 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-16 08:53:45,092 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 [2021-12-16 08:53:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:45,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:45,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:45,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032317648] [2021-12-16 08:53:45,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032317648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:45,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:45,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:53:45,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067930639] [2021-12-16 08:53:45,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:45,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:45,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:45,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:45,118 INFO L87 Difference]: Start difference. First operand 3133 states and 5321 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:53:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:47,203 INFO L93 Difference]: Finished difference Result 5450 states and 9669 transitions. [2021-12-16 08:53:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:53:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-12-16 08:53:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:47,217 INFO L225 Difference]: With dead ends: 5450 [2021-12-16 08:53:47,218 INFO L226 Difference]: Without dead ends: 5450 [2021-12-16 08:53:47,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:53:47,218 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 1330 mSDsluCounter, 5812 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 9273 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:47,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 9273 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 674 Invalid, 0 Unknown, 37 Unchecked, 2.0s Time] [2021-12-16 08:53:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2021-12-16 08:53:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 3132. [2021-12-16 08:53:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2021-12-16 08:53:47,564 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 14 [2021-12-16 08:53:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:47,565 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2021-12-16 08:53:47,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:53:47,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2021-12-16 08:53:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 08:53:47,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:47,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:47,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:47,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:47,773 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-12-16 08:53:47,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:47,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603889451] [2021-12-16 08:53:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:47,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:47,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:47,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:47,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 08:53:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:53:47,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:47,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:47,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:47,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603889451] [2021-12-16 08:53:47,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603889451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:47,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:47,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:47,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856827067] [2021-12-16 08:53:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:53:47,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:53:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:53:47,951 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 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) [2021-12-16 08:53:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:48,004 INFO L93 Difference]: Finished difference Result 3072 states and 5233 transitions. [2021-12-16 08:53:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:53:48,005 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 [2021-12-16 08:53:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:48,016 INFO L225 Difference]: With dead ends: 3072 [2021-12-16 08:53:48,016 INFO L226 Difference]: Without dead ends: 3072 [2021-12-16 08:53:48,016 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 [2021-12-16 08:53:48,018 INFO L933 BasicCegarLoop]: 2954 mSDtfsCounter, 1933 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:48,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 3481 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:53:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-16 08:53:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2021-12-16 08:53:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 1665 states have (on average 1.9381381381381382) internal successors, (3227), 3066 states have internal predecessors, (3227), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 5233 transitions. [2021-12-16 08:53:48,229 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 5233 transitions. Word has length 18 [2021-12-16 08:53:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:48,230 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 5233 transitions. [2021-12-16 08:53:48,230 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) [2021-12-16 08:53:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 5233 transitions. [2021-12-16 08:53:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 08:53:48,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:48,231 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] [2021-12-16 08:53:48,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:48,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:48,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-12-16 08:53:48,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:48,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144991660] [2021-12-16 08:53:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:48,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:48,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:48,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 08:53:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:48,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:53:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:48,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:48,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144991660] [2021-12-16 08:53:48,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144991660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:48,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:48,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:53:48,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71389759] [2021-12-16 08:53:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:48,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:48,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:48,622 INFO L87 Difference]: Start difference. First operand 3072 states and 5233 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) [2021-12-16 08:53:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:48,689 INFO L93 Difference]: Finished difference Result 3044 states and 5177 transitions. [2021-12-16 08:53:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:53:48,690 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 [2021-12-16 08:53:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:48,696 INFO L225 Difference]: With dead ends: 3044 [2021-12-16 08:53:48,696 INFO L226 Difference]: Without dead ends: 3044 [2021-12-16 08:53:48,696 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 [2021-12-16 08:53:48,697 INFO L933 BasicCegarLoop]: 2909 mSDtfsCounter, 1904 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:48,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 6338 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:53:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2021-12-16 08:53:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3042. [2021-12-16 08:53:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 1649 states have (on average 1.9217707701637357) internal successors, (3169), 3036 states have internal predecessors, (3169), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5175 transitions. [2021-12-16 08:53:48,878 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5175 transitions. Word has length 20 [2021-12-16 08:53:48,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:48,879 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 5175 transitions. [2021-12-16 08:53:48,879 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) [2021-12-16 08:53:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5175 transitions. [2021-12-16 08:53:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:53:48,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:48,879 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] [2021-12-16 08:53:48,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:49,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:49,087 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-12-16 08:53:49,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:49,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451980794] [2021-12-16 08:53:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:49,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:49,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:49,088 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:49,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 08:53:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:49,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:53:49,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:49,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:49,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:49,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:49,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451980794] [2021-12-16 08:53:49,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451980794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:49,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:49,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:49,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130778938] [2021-12-16 08:53:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:49,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:49,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:49,283 INFO L87 Difference]: Start difference. First operand 3042 states and 5175 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) [2021-12-16 08:53:52,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:52,457 INFO L93 Difference]: Finished difference Result 5473 states and 9671 transitions. [2021-12-16 08:53:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:53:52,459 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 34 [2021-12-16 08:53:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:52,472 INFO L225 Difference]: With dead ends: 5473 [2021-12-16 08:53:52,472 INFO L226 Difference]: Without dead ends: 5473 [2021-12-16 08:53:52,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:53:52,473 INFO L933 BasicCegarLoop]: 2988 mSDtfsCounter, 3442 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 6502 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:52,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3442 Valid, 6502 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-16 08:53:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2021-12-16 08:53:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 3038. [2021-12-16 08:53:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 1649 states have (on average 1.9169193450576107) internal successors, (3161), 3032 states have internal predecessors, (3161), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 5167 transitions. [2021-12-16 08:53:52,836 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 5167 transitions. Word has length 34 [2021-12-16 08:53:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:52,837 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 5167 transitions. [2021-12-16 08:53:52,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-16 08:53:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 5167 transitions. [2021-12-16 08:53:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:53:52,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:52,838 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] [2021-12-16 08:53:52,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:53,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:53,055 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-12-16 08:53:53,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280874919] [2021-12-16 08:53:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:53,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:53,058 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:53,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 08:53:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:53,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 08:53:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:53,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:53,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:53,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:53,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280874919] [2021-12-16 08:53:53,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280874919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:53,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:53,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778313978] [2021-12-16 08:53:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:53,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:53,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:53,376 INFO L87 Difference]: Start difference. First operand 3038 states and 5167 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) [2021-12-16 08:53:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:57,481 INFO L93 Difference]: Finished difference Result 5530 states and 9693 transitions. [2021-12-16 08:53:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:53:57,481 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 34 [2021-12-16 08:53:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:57,492 INFO L225 Difference]: With dead ends: 5530 [2021-12-16 08:53:57,492 INFO L226 Difference]: Without dead ends: 5530 [2021-12-16 08:53:57,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:53:57,494 INFO L933 BasicCegarLoop]: 5152 mSDtfsCounter, 2908 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10082 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:57,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2908 Valid, 10082 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 08:53:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-12-16 08:53:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 3034. [2021-12-16 08:53:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 1649 states have (on average 1.9120679199514858) internal successors, (3153), 3028 states have internal predecessors, (3153), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5159 transitions. [2021-12-16 08:53:57,824 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5159 transitions. Word has length 34 [2021-12-16 08:53:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:57,824 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 5159 transitions. [2021-12-16 08:53:57,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-16 08:53:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5159 transitions. [2021-12-16 08:53:57,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 08:53:57,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:57,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:57,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:58,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:58,033 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-12-16 08:53:58,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:58,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597941193] [2021-12-16 08:53:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:58,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:58,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:58,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 08:53:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:53:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:58,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:58,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:58,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597941193] [2021-12-16 08:53:58,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597941193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:58,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:58,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:53:58,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346532886] [2021-12-16 08:53:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:58,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:58,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:58,304 INFO L87 Difference]: Start difference. First operand 3034 states and 5159 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:53:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:53:58,352 INFO L93 Difference]: Finished difference Result 3022 states and 5139 transitions. [2021-12-16 08:53:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:53:58,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-12-16 08:53:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:53:58,358 INFO L225 Difference]: With dead ends: 3022 [2021-12-16 08:53:58,359 INFO L226 Difference]: Without dead ends: 3022 [2021-12-16 08:53:58,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:53:58,360 INFO L933 BasicCegarLoop]: 2903 mSDtfsCounter, 1880 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 6316 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:53:58,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2383 Valid, 6316 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:53:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-12-16 08:53:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 3022. [2021-12-16 08:53:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1637 states have (on average 1.9138668295662797) internal successors, (3133), 3016 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:53:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5139 transitions. [2021-12-16 08:53:58,560 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5139 transitions. Word has length 52 [2021-12-16 08:53:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:53:58,561 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5139 transitions. [2021-12-16 08:53:58,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:53:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5139 transitions. [2021-12-16 08:53:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 08:53:58,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:53:58,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:53:58,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-16 08:53:58,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:53:58,771 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:53:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:53:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-12-16 08:53:58,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:53:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580622345] [2021-12-16 08:53:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:53:58,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:53:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:53:58,774 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:53:58,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 08:53:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:53:59,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:53:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:53:59,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:59,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:53:59,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:53:59,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:53:59,461 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:53:59,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:53:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:53:59,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:53:59,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:53:59,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580622345] [2021-12-16 08:53:59,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580622345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:53:59,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:53:59,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:53:59,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781666855] [2021-12-16 08:53:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:53:59,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:53:59,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:53:59,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:53:59,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:53:59,477 INFO L87 Difference]: Start difference. First operand 3022 states and 5139 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:02,952 INFO L93 Difference]: Finished difference Result 5224 states and 9400 transitions. [2021-12-16 08:54:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:54:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-12-16 08:54:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:02,964 INFO L225 Difference]: With dead ends: 5224 [2021-12-16 08:54:02,964 INFO L226 Difference]: Without dead ends: 5224 [2021-12-16 08:54:02,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:02,965 INFO L933 BasicCegarLoop]: 2951 mSDtfsCounter, 4397 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5400 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:02,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5400 Valid, 4163 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-16 08:54:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2021-12-16 08:54:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 2952. [2021-12-16 08:54:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8872274143302181) internal successors, (3029), 2946 states have internal predecessors, (3029), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:54:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2021-12-16 08:54:03,295 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 60 [2021-12-16 08:54:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:03,296 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2021-12-16 08:54:03,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2021-12-16 08:54:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 08:54:03,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:03,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:03,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-16 08:54:03,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:03,508 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-12-16 08:54:03,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:03,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603657817] [2021-12-16 08:54:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:03,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:03,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:03,514 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:03,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 08:54:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:03,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:54:03,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:03,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:03,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:54:03,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 08:54:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:03,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:03,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:03,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603657817] [2021-12-16 08:54:03,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603657817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:03,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:03,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:03,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499272315] [2021-12-16 08:54:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:03,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:54:03,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:03,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:54:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:54:03,823 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:05,385 INFO L93 Difference]: Finished difference Result 2951 states and 5034 transitions. [2021-12-16 08:54:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:54:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-12-16 08:54:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:05,391 INFO L225 Difference]: With dead ends: 2951 [2021-12-16 08:54:05,392 INFO L226 Difference]: Without dead ends: 2951 [2021-12-16 08:54:05,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:54:05,393 INFO L933 BasicCegarLoop]: 2863 mSDtfsCounter, 4 mSDsluCounter, 7351 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10214 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:05,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10214 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 08:54:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-12-16 08:54:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2951. [2021-12-16 08:54:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2945 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:54:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5034 transitions. [2021-12-16 08:54:05,562 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5034 transitions. Word has length 65 [2021-12-16 08:54:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:05,563 INFO L470 AbstractCegarLoop]: Abstraction has 2951 states and 5034 transitions. [2021-12-16 08:54:05,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5034 transitions. [2021-12-16 08:54:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 08:54:05,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:05,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:05,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:05,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:05,769 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-12-16 08:54:05,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:05,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748317819] [2021-12-16 08:54:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:05,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:05,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:05,776 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:05,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-16 08:54:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:06,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 08:54:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:06,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:54:06,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:54:06,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:54:06,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 08:54:06,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 08:54:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:06,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:06,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:06,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748317819] [2021-12-16 08:54:06,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748317819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:06,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:06,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:06,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031024442] [2021-12-16 08:54:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:06,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:54:06,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:54:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:54:06,167 INFO L87 Difference]: Start difference. First operand 2951 states and 5034 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:08,139 INFO L93 Difference]: Finished difference Result 2950 states and 5033 transitions. [2021-12-16 08:54:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:54:08,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-12-16 08:54:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:08,145 INFO L225 Difference]: With dead ends: 2950 [2021-12-16 08:54:08,145 INFO L226 Difference]: Without dead ends: 2950 [2021-12-16 08:54:08,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:54:08,146 INFO L933 BasicCegarLoop]: 2863 mSDtfsCounter, 2 mSDsluCounter, 7387 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10250 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:08,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10250 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 08:54:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-12-16 08:54:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2021-12-16 08:54:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2944 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-16 08:54:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5033 transitions. [2021-12-16 08:54:08,316 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5033 transitions. Word has length 65 [2021-12-16 08:54:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:08,317 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 5033 transitions. [2021-12-16 08:54:08,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:54:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5033 transitions. [2021-12-16 08:54:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-16 08:54:08,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:08,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:08,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:08,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:08,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2021-12-16 08:54:08,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:08,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208420139] [2021-12-16 08:54:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:08,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:08,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:08,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:08,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-16 08:54:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:08,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:54:08,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:08,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:54:08,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:08,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208420139] [2021-12-16 08:54:08,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208420139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:54:08,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:54:08,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:54:08,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802983220] [2021-12-16 08:54:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:54:08,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:54:08,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:54:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:54:08,847 INFO L87 Difference]: Start difference. First operand 2950 states and 5033 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:54:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:08,902 INFO L93 Difference]: Finished difference Result 2953 states and 5037 transitions. [2021-12-16 08:54:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:54:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-12-16 08:54:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:08,923 INFO L225 Difference]: With dead ends: 2953 [2021-12-16 08:54:08,923 INFO L226 Difference]: Without dead ends: 2953 [2021-12-16 08:54:08,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:54:08,924 INFO L933 BasicCegarLoop]: 2863 mSDtfsCounter, 2 mSDsluCounter, 5721 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8584 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:08,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 8584 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:54:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-12-16 08:54:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2953. [2021-12-16 08:54:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 1606 states have (on average 1.8866749688667497) internal successors, (3030), 2947 states have internal predecessors, (3030), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-12-16 08:54:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 5037 transitions. [2021-12-16 08:54:09,122 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 5037 transitions. Word has length 73 [2021-12-16 08:54:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:09,122 INFO L470 AbstractCegarLoop]: Abstraction has 2953 states and 5037 transitions. [2021-12-16 08:54:09,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:54:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 5037 transitions. [2021-12-16 08:54:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 08:54:09,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:09,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:09,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:09,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:09,332 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1741939320, now seen corresponding path program 1 times [2021-12-16 08:54:09,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:09,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720498921] [2021-12-16 08:54:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:54:09,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:09,335 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:09,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-16 08:54:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:54:09,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:54:09,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:09,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:54:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:09,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:09,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720498921] [2021-12-16 08:54:09,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720498921] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:54:09,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:54:09,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 08:54:09,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398097495] [2021-12-16 08:54:09,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:54:09,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 08:54:09,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:09,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 08:54:09,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 08:54:09,812 INFO L87 Difference]: Start difference. First operand 2953 states and 5037 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:54:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:09,959 INFO L93 Difference]: Finished difference Result 2965 states and 5054 transitions. [2021-12-16 08:54:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 08:54:09,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2021-12-16 08:54:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:09,968 INFO L225 Difference]: With dead ends: 2965 [2021-12-16 08:54:09,969 INFO L226 Difference]: Without dead ends: 2965 [2021-12-16 08:54:09,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-12-16 08:54:09,969 INFO L933 BasicCegarLoop]: 2864 mSDtfsCounter, 22 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8588 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:09,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 8588 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:54:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2021-12-16 08:54:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2963. [2021-12-16 08:54:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 1615 states have (on average 1.8854489164086687) internal successors, (3045), 2956 states have internal predecessors, (3045), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-12-16 08:54:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 5052 transitions. [2021-12-16 08:54:10,192 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 5052 transitions. Word has length 74 [2021-12-16 08:54:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:10,193 INFO L470 AbstractCegarLoop]: Abstraction has 2963 states and 5052 transitions. [2021-12-16 08:54:10,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:54:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 5052 transitions. [2021-12-16 08:54:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-16 08:54:10,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:10,194 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:10,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:10,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:10,404 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash 755671407, now seen corresponding path program 2 times [2021-12-16 08:54:10,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:10,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478011011] [2021-12-16 08:54:10,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:54:10,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:10,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:10,406 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:10,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-16 08:54:10,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:54:10,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:54:10,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:54:10,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:10,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:54:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:11,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:11,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478011011] [2021-12-16 08:54:11,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478011011] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:54:11,186 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:54:11,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-16 08:54:11,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895625984] [2021-12-16 08:54:11,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:54:11,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 08:54:11,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 08:54:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-16 08:54:11,188 INFO L87 Difference]: Start difference. First operand 2963 states and 5052 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:54:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:11,712 INFO L93 Difference]: Finished difference Result 2984 states and 5080 transitions. [2021-12-16 08:54:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 08:54:11,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2021-12-16 08:54:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:11,720 INFO L225 Difference]: With dead ends: 2984 [2021-12-16 08:54:11,720 INFO L226 Difference]: Without dead ends: 2980 [2021-12-16 08:54:11,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2021-12-16 08:54:11,721 INFO L933 BasicCegarLoop]: 2867 mSDtfsCounter, 67 mSDsluCounter, 14318 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 17185 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:11,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 17185 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 08:54:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2021-12-16 08:54:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2972. [2021-12-16 08:54:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 1624 states have (on average 1.8823891625615763) internal successors, (3057), 2965 states have internal predecessors, (3057), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-12-16 08:54:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5064 transitions. [2021-12-16 08:54:11,916 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5064 transitions. Word has length 77 [2021-12-16 08:54:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:11,916 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 5064 transitions. [2021-12-16 08:54:11,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:54:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5064 transitions. [2021-12-16 08:54:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-16 08:54:11,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:11,917 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:11,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-16 08:54:12,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:12,127 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1043203377, now seen corresponding path program 3 times [2021-12-16 08:54:12,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:12,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229288861] [2021-12-16 08:54:12,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:54:12,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:12,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:12,129 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:12,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-16 08:54:12,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 08:54:12,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:54:12,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 08:54:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:12,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:54:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:13,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:54:13,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229288861] [2021-12-16 08:54:13,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229288861] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:54:13,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:54:13,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-16 08:54:13,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648988791] [2021-12-16 08:54:13,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:54:13,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 08:54:13,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:54:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 08:54:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-12-16 08:54:13,562 INFO L87 Difference]: Start difference. First operand 2972 states and 5064 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:54:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:54:16,195 INFO L93 Difference]: Finished difference Result 3014 states and 5126 transitions. [2021-12-16 08:54:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-16 08:54:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2021-12-16 08:54:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:54:16,204 INFO L225 Difference]: With dead ends: 3014 [2021-12-16 08:54:16,204 INFO L226 Difference]: Without dead ends: 3008 [2021-12-16 08:54:16,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 08:54:16,206 INFO L933 BasicCegarLoop]: 2872 mSDtfsCounter, 162 mSDsluCounter, 40120 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 42992 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:54:16,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 42992 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 08:54:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-12-16 08:54:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2990. [2021-12-16 08:54:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 1642 states have (on average 1.8757612667478685) internal successors, (3080), 2983 states have internal predecessors, (3080), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-12-16 08:54:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 5087 transitions. [2021-12-16 08:54:16,378 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 5087 transitions. Word has length 83 [2021-12-16 08:54:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:54:16,379 INFO L470 AbstractCegarLoop]: Abstraction has 2990 states and 5087 transitions. [2021-12-16 08:54:16,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:54:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 5087 transitions. [2021-12-16 08:54:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-16 08:54:16,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:54:16,380 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:54:16,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-16 08:54:16,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:54:16,591 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-12-16 08:54:16,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:54:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash -420145777, now seen corresponding path program 4 times [2021-12-16 08:54:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:54:16,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212210165] [2021-12-16 08:54:16,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 08:54:16,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:54:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:54:16,593 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:54:16,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-16 08:54:16,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 08:54:16,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:54:16,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 08:54:16,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:54:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:54:17,334 INFO L328 TraceCheckSpWp]: Computing backward predicates...