./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 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/ldv-memsafety/memleaks_test11.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 d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:53:51,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:53:51,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:53:51,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:53:51,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:53:51,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:53:51,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:53:51,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:53:51,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:53:51,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:53:51,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:53:51,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:53:51,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:53:51,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:53:51,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:53:51,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:53:51,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:53:51,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:53:51,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:53:51,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:53:51,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:53:51,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:53:51,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:53:51,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:53:51,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:53:51,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:53:51,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:53:51,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:53:51,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:53:51,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:53:51,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:53:51,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:53:51,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:53:51,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:53:51,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:53:51,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:53:51,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:53:51,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:53:51,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:53:51,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:53:51,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:53:51,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 05:53:51,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:53:51,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:53:51,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:53:51,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:53:51,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:53:51,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:53:51,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:53:51,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:53:51,267 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:53:51,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:53:51,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:53:51,268 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:53:51,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:53:51,269 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:53:51,270 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:53:51,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:53:51,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:53:51,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:53:51,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:53:51,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:53:51,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:53:51,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:53:51,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:53:51,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:53:51,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc [2021-12-28 05:53:51,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:53:51,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:53:51,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:53:51,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:53:51,546 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:53:51,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-12-28 05:53:51,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1370c372c/37fef447bc534b3fa89e268a262fe527/FLAGbf9bb543f [2021-12-28 05:53:52,026 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:53:52,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-12-28 05:53:52,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1370c372c/37fef447bc534b3fa89e268a262fe527/FLAGbf9bb543f [2021-12-28 05:53:52,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1370c372c/37fef447bc534b3fa89e268a262fe527 [2021-12-28 05:53:52,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:53:52,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:53:52,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:53:52,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:53:52,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:53:52,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:53:52" (1/1) ... [2021-12-28 05:53:52,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b170be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:52, skipping insertion in model container [2021-12-28 05:53:52,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:53:52" (1/1) ... [2021-12-28 05:53:52,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:53:52,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:53:52,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:53:52,763 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) [2021-12-28 05:53:52,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39b2606c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:52, skipping insertion in model container [2021-12-28 05:53:52,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:53:52,765 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-28 05:53:52,767 INFO L158 Benchmark]: Toolchain (without parser) took 417.66ms. Allocated memory is still 67.1MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 141.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 05:53:52,768 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 48.4MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:53:52,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.93ms. Allocated memory is still 67.1MB. Free memory was 46.3MB in the beginning and 46.3MB in the end (delta: 25.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 05:53:52,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 48.4MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.93ms. Allocated memory is still 67.1MB. Free memory was 46.3MB in the beginning and 46.3MB in the end (delta: 25.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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/ldv-memsafety/memleaks_test11.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 d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:53:54,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:53:54,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:53:54,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:53:54,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:53:54,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:53:54,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:53:54,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:53:54,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:53:54,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:53:54,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:53:54,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:53:54,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:53:54,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:53:54,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:53:54,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:53:54,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:53:54,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:53:54,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:53:54,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:53:54,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:53:54,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:53:54,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:53:54,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:53:54,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:53:54,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:53:54,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:53:54,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:53:54,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:53:54,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:53:54,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:53:54,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:53:54,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:53:54,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:53:54,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:53:54,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:53:54,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:53:54,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:53:54,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:53:54,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:53:54,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:53:54,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-28 05:53:54,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:53:54,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:53:54,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:53:54,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:53:54,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:53:54,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:53:54,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:53:54,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:53:54,312 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:53:54,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:53:54,312 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:53:54,313 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:53:54,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:53:54,314 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:53:54,314 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 05:53:54,314 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 05:53:54,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:53:54,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:53:54,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:53:54,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:53:54,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:53:54,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:53:54,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:53:54,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:53:54,323 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 05:53:54,323 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 05:53:54,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 05:53:54,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc [2021-12-28 05:53:54,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:53:54,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:53:54,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:53:54,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:53:54,581 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:53:54,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-12-28 05:53:54,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9253ddfc/c2623a29d1f14a57beec5fb2795ff75a/FLAGdd94e3b44 [2021-12-28 05:53:55,105 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:53:55,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-12-28 05:53:55,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9253ddfc/c2623a29d1f14a57beec5fb2795ff75a/FLAGdd94e3b44 [2021-12-28 05:53:55,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9253ddfc/c2623a29d1f14a57beec5fb2795ff75a [2021-12-28 05:53:55,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:53:55,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:53:55,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:53:55,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:53:55,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:53:55,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca97ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55, skipping insertion in model container [2021-12-28 05:53:55,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:53:55,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:53:55,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:53:55,572 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-28 05:53:55,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:53:55,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:53:55,635 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:53:55,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:53:55,723 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:53:55,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55 WrapperNode [2021-12-28 05:53:55,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:53:55,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:53:55,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:53:55,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:53:55,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,783 INFO L137 Inliner]: procedures = 169, calls = 87, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 92 [2021-12-28 05:53:55,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:53:55,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:53:55,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:53:55,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:53:55,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:53:55,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:53:55,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:53:55,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:53:55,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (1/1) ... [2021-12-28 05:53:55,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:53:55,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:55,856 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) [2021-12-28 05:53:55,868 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 [2021-12-28 05:53:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 05:53:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 05:53:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2021-12-28 05:53:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2021-12-28 05:53:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:53:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:53:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:53:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 05:53:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:53:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 05:53:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:53:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:53:56,026 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:53:56,030 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:53:56,304 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:53:56,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:53:56,311 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 05:53:56,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:53:56 BoogieIcfgContainer [2021-12-28 05:53:56,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:53:56,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:53:56,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:53:56,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:53:56,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:53:55" (1/3) ... [2021-12-28 05:53:56,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2260a850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:53:56, skipping insertion in model container [2021-12-28 05:53:56,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:53:55" (2/3) ... [2021-12-28 05:53:56,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2260a850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:53:56, skipping insertion in model container [2021-12-28 05:53:56,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:53:56" (3/3) ... [2021-12-28 05:53:56,320 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test11.i [2021-12-28 05:53:56,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:53:56,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-12-28 05:53:56,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:53:56,368 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 [2021-12-28 05:53:56,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-12-28 05:53:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 76 states have internal predecessors, (82), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-28 05:53:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 05:53:56,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:56,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:53:56,386 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:53:56,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1738627509, now seen corresponding path program 1 times [2021-12-28 05:53:56,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:53:56,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033243643] [2021-12-28 05:53:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:56,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:53:56,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:53:56,400 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) [2021-12-28 05:53:56,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 05:53:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:56,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:53:56,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:56,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:53:56,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:53:56,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033243643] [2021-12-28 05:53:56,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033243643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:56,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:53:56,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325885668] [2021-12-28 05:53:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:56,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:53:56,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:53:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:53:56,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:56,583 INFO L87 Difference]: Start difference. First operand has 85 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 76 states have internal predecessors, (82), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:56,670 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2021-12-28 05:53:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:53:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-28 05:53:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:56,678 INFO L225 Difference]: With dead ends: 157 [2021-12-28 05:53:56,679 INFO L226 Difference]: Without dead ends: 153 [2021-12-28 05:53:56,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:56,692 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 68 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:56,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 357 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:53:56,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-28 05:53:56,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 87. [2021-12-28 05:53:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 77 states have internal predecessors, (83), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-28 05:53:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-12-28 05:53:56,742 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 11 [2021-12-28 05:53:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:56,742 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-12-28 05:53:56,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2021-12-28 05:53:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 05:53:56,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:56,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:53:56,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:56,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:53:56,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:53:56,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash -851123828, now seen corresponding path program 1 times [2021-12-28 05:53:56,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:53:56,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362573459] [2021-12-28 05:53:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:56,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:53:56,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:53:56,955 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) [2021-12-28 05:53:56,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-28 05:53:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:57,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:53:57,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:57,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:53:57,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:53:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362573459] [2021-12-28 05:53:57,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362573459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:57,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:57,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:53:57,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551298550] [2021-12-28 05:53:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:57,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:53:57,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:53:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:53:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:53:57,046 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:57,212 INFO L93 Difference]: Finished difference Result 153 states and 176 transitions. [2021-12-28 05:53:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:53:57,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-28 05:53:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:57,215 INFO L225 Difference]: With dead ends: 153 [2021-12-28 05:53:57,215 INFO L226 Difference]: Without dead ends: 151 [2021-12-28 05:53:57,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:53:57,216 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 66 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:57,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 304 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:53:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-28 05:53:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 83. [2021-12-28 05:53:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 74 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-28 05:53:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-12-28 05:53:57,229 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2021-12-28 05:53:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:57,229 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-12-28 05:53:57,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-12-28 05:53:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:53:57,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:57,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:53:57,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:57,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:53:57,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:53:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash -470294884, now seen corresponding path program 1 times [2021-12-28 05:53:57,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:53:57,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342558160] [2021-12-28 05:53:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:57,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:53:57,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:53:57,438 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) [2021-12-28 05:53:57,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-28 05:53:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:57,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:53:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:53:57,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:53:57,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:53:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342558160] [2021-12-28 05:53:57,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342558160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:57,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:57,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:53:57,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218935391] [2021-12-28 05:53:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:57,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:53:57,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:53:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:53:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:57,530 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:53:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:57,579 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-12-28 05:53:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:53:57,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-28 05:53:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:57,590 INFO L225 Difference]: With dead ends: 150 [2021-12-28 05:53:57,590 INFO L226 Difference]: Without dead ends: 150 [2021-12-28 05:53:57,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:57,592 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 63 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:57,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 450 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:53:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-28 05:53:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 87. [2021-12-28 05:53:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 51 states have (on average 1.607843137254902) internal successors, (82), 77 states have internal predecessors, (82), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-28 05:53:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2021-12-28 05:53:57,614 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 17 [2021-12-28 05:53:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:57,614 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2021-12-28 05:53:57,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:53:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2021-12-28 05:53:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:53:57,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:57,614 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:53:57,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:57,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:53:57,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:53:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash -470294895, now seen corresponding path program 1 times [2021-12-28 05:53:57,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:53:57,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512066327] [2021-12-28 05:53:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:57,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:53:57,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:53:57,817 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) [2021-12-28 05:53:57,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-28 05:53:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:57,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 05:53:57,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:57,899 INFO L387 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 [2021-12-28 05:53:58,005 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-28 05:53:58,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2021-12-28 05:53:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:58,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:54:00,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512066327] [2021-12-28 05:54:00,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512066327] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:54:00,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-12-28 05:54:00,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679841941] [2021-12-28 05:54:00,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:00,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:54:00,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:54:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2021-12-28 05:54:00,931 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 05:54:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:01,069 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-12-28 05:54:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:54:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-12-28 05:54:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:01,071 INFO L225 Difference]: With dead ends: 107 [2021-12-28 05:54:01,071 INFO L226 Difference]: Without dead ends: 107 [2021-12-28 05:54:01,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2021-12-28 05:54:01,072 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 10 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:01,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 313 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2021-12-28 05:54:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-28 05:54:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-12-28 05:54:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 90 states have internal predecessors, (101), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-28 05:54:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-12-28 05:54:01,077 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 17 [2021-12-28 05:54:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:01,077 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-12-28 05:54:01,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 05:54:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-12-28 05:54:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:54:01,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:01,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:01,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:01,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:01,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -470294894, now seen corresponding path program 1 times [2021-12-28 05:54:01,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:01,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526734519] [2021-12-28 05:54:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:01,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:01,286 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) [2021-12-28 05:54:01,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-28 05:54:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:01,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 05:54:01,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:01,351 INFO L387 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 [2021-12-28 05:54:01,356 INFO L387 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 [2021-12-28 05:54:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:54:03,495 INFO L387 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 [2021-12-28 05:54:03,503 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:03,504 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:54:03,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:03,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:03,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526734519] [2021-12-28 05:54:03,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526734519] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:03,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1054299673] [2021-12-28 05:54:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:03,769 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 05:54:03,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 05:54:03,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-28 05:54:03,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-12-28 05:54:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:03,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 05:54:03,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:03,856 INFO L387 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 [2021-12-28 05:54:03,861 INFO L387 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 [2021-12-28 05:54:03,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:54:03,973 INFO L387 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 [2021-12-28 05:54:03,981 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:03,982 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:54:04,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:04,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1054299673] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:04,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:04,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-28 05:54:04,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968377986] [2021-12-28 05:54:04,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:04,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 05:54:04,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 05:54:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2021-12-28 05:54:04,193 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:54:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:06,704 INFO L93 Difference]: Finished difference Result 179 states and 200 transitions. [2021-12-28 05:54:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:54:06,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-12-28 05:54:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:06,706 INFO L225 Difference]: With dead ends: 179 [2021-12-28 05:54:06,706 INFO L226 Difference]: Without dead ends: 179 [2021-12-28 05:54:06,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=32, Invalid=122, Unknown=2, NotChecked=0, Total=156 [2021-12-28 05:54:06,707 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 139 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:06,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 558 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 391 Invalid, 0 Unknown, 80 Unchecked, 0.4s Time] [2021-12-28 05:54:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-28 05:54:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2021-12-28 05:54:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 95 states have (on average 1.5894736842105264) internal successors, (151), 120 states have internal predecessors, (151), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-28 05:54:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 180 transitions. [2021-12-28 05:54:06,715 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 180 transitions. Word has length 17 [2021-12-28 05:54:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:06,715 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 180 transitions. [2021-12-28 05:54:06,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:54:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 180 transitions. [2021-12-28 05:54:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:54:06,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:06,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:06,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-12-28 05:54:06,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:07,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:07,118 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash -763697902, now seen corresponding path program 1 times [2021-12-28 05:54:07,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:07,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398209618] [2021-12-28 05:54:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:07,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:07,121 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) [2021-12-28 05:54:07,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-28 05:54:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 05:54:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:54:07,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:54:07,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398209618] [2021-12-28 05:54:07,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398209618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:54:07,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:54:07,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:54:07,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610449274] [2021-12-28 05:54:07,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:54:07,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:54:07,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:54:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:54:07,211 INFO L87 Difference]: Start difference. First operand 138 states and 180 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:54:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:07,234 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2021-12-28 05:54:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:54:07,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-12-28 05:54:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:07,235 INFO L225 Difference]: With dead ends: 129 [2021-12-28 05:54:07,235 INFO L226 Difference]: Without dead ends: 127 [2021-12-28 05:54:07,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:54:07,236 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:07,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:54:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-28 05:54:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-12-28 05:54:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 88 states have (on average 1.6022727272727273) internal successors, (141), 112 states have internal predecessors, (141), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-28 05:54:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 163 transitions. [2021-12-28 05:54:07,241 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 163 transitions. Word has length 17 [2021-12-28 05:54:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:07,241 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 163 transitions. [2021-12-28 05:54:07,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:54:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 163 transitions. [2021-12-28 05:54:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 05:54:07,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:07,242 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:07,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:07,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:07,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -806735705, now seen corresponding path program 1 times [2021-12-28 05:54:07,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:07,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968841652] [2021-12-28 05:54:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:07,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:07,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:07,450 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) [2021-12-28 05:54:07,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-28 05:54:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:07,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 05:54:07,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:54:07,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:07,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:07,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968841652] [2021-12-28 05:54:07,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968841652] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:54:07,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:07,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-12-28 05:54:07,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798550007] [2021-12-28 05:54:07,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:07,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:54:07,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:07,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:54:07,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:54:07,703 INFO L87 Difference]: Start difference. First operand 127 states and 163 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:54:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:07,860 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2021-12-28 05:54:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:54:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2021-12-28 05:54:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:07,862 INFO L225 Difference]: With dead ends: 126 [2021-12-28 05:54:07,862 INFO L226 Difference]: Without dead ends: 126 [2021-12-28 05:54:07,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:54:07,863 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 138 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:07,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 274 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2021-12-28 05:54:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-28 05:54:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-28 05:54:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 88 states have (on average 1.5795454545454546) internal successors, (139), 111 states have internal predecessors, (139), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-28 05:54:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2021-12-28 05:54:07,867 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 18 [2021-12-28 05:54:07,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:07,867 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2021-12-28 05:54:07,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:54:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2021-12-28 05:54:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-28 05:54:07,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:07,868 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:07,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:08,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:08,075 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:08,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1173731936, now seen corresponding path program 1 times [2021-12-28 05:54:08,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861859643] [2021-12-28 05:54:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:08,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:08,077 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) [2021-12-28 05:54:08,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-28 05:54:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:08,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 05:54:08,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:08,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:12,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:12,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861859643] [2021-12-28 05:54:12,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861859643] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:12,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [953359287] [2021-12-28 05:54:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:12,398 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 05:54:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 05:54:12,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-28 05:54:12,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-12-28 05:54:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 05:54:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:12,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:16,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [953359287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:16,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:16,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-12-28 05:54:16,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310884051] [2021-12-28 05:54:16,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:16,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:54:16,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:54:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=166, Unknown=2, NotChecked=0, Total=210 [2021-12-28 05:54:16,769 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:54:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:16,908 INFO L93 Difference]: Finished difference Result 135 states and 168 transitions. [2021-12-28 05:54:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:54:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2021-12-28 05:54:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:16,909 INFO L225 Difference]: With dead ends: 135 [2021-12-28 05:54:16,909 INFO L226 Difference]: Without dead ends: 128 [2021-12-28 05:54:16,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2021-12-28 05:54:16,910 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 14 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:16,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 519 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 164 Unchecked, 0.1s Time] [2021-12-28 05:54:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-28 05:54:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2021-12-28 05:54:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 85 states have (on average 1.588235294117647) internal successors, (135), 108 states have internal predecessors, (135), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-28 05:54:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 156 transitions. [2021-12-28 05:54:16,913 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 156 transitions. Word has length 21 [2021-12-28 05:54:16,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:16,914 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 156 transitions. [2021-12-28 05:54:16,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:54:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 156 transitions. [2021-12-28 05:54:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:54:16,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:16,915 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:16,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:17,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:17,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:17,317 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash -624729604, now seen corresponding path program 1 times [2021-12-28 05:54:17,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:17,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840465112] [2021-12-28 05:54:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:17,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:17,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:17,318 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) [2021-12-28 05:54:17,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-28 05:54:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:17,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 05:54:17,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:17,407 INFO L387 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 [2021-12-28 05:54:17,474 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-28 05:54:17,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2021-12-28 05:54:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:17,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:17,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:17,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840465112] [2021-12-28 05:54:17,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840465112] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:54:17,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:17,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-12-28 05:54:17,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378920210] [2021-12-28 05:54:17,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:17,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:54:17,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:54:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:54:17,620 INFO L87 Difference]: Start difference. First operand 123 states and 156 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:54:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:17,754 INFO L93 Difference]: Finished difference Result 150 states and 189 transitions. [2021-12-28 05:54:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:54:17,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-12-28 05:54:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:17,755 INFO L225 Difference]: With dead ends: 150 [2021-12-28 05:54:17,755 INFO L226 Difference]: Without dead ends: 150 [2021-12-28 05:54:17,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:54:17,756 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 19 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:17,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 285 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2021-12-28 05:54:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-28 05:54:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2021-12-28 05:54:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 105 states have (on average 1.561904761904762) internal successors, (164), 128 states have internal predecessors, (164), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) [2021-12-28 05:54:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2021-12-28 05:54:17,760 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 25 [2021-12-28 05:54:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:17,761 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2021-12-28 05:54:17,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:54:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2021-12-28 05:54:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:54:17,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:17,761 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:17,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:17,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:17,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -624729603, now seen corresponding path program 1 times [2021-12-28 05:54:17,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:17,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671355367] [2021-12-28 05:54:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:17,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:17,970 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) [2021-12-28 05:54:17,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-28 05:54:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:18,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 05:54:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:18,057 INFO L387 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 [2021-12-28 05:54:22,183 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 05:54:22,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-28 05:54:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:54:22,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:22,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671355367] [2021-12-28 05:54:22,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671355367] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1038117640] [2021-12-28 05:54:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:22,382 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 05:54:22,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 05:54:22,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-28 05:54:22,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-12-28 05:54:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:22,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 05:54:22,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:22,494 INFO L387 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 [2021-12-28 05:54:22,500 INFO L387 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 [2021-12-28 05:54:26,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:54:26,721 INFO L387 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 [2021-12-28 05:54:26,728 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:26,729 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:54:26,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:28,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1038117640] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:28,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:28,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-28 05:54:28,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439749414] [2021-12-28 05:54:28,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:28,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 05:54:28,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 05:54:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=224, Unknown=5, NotChecked=0, Total=272 [2021-12-28 05:54:28,958 INFO L87 Difference]: Start difference. First operand 147 states and 189 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 05:54:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:31,542 INFO L93 Difference]: Finished difference Result 242 states and 309 transitions. [2021-12-28 05:54:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:54:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2021-12-28 05:54:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:31,545 INFO L225 Difference]: With dead ends: 242 [2021-12-28 05:54:31,545 INFO L226 Difference]: Without dead ends: 242 [2021-12-28 05:54:31,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=56, Invalid=280, Unknown=6, NotChecked=0, Total=342 [2021-12-28 05:54:31,546 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 113 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:31,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 658 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 374 Invalid, 0 Unknown, 137 Unchecked, 0.5s Time] [2021-12-28 05:54:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-28 05:54:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 201. [2021-12-28 05:54:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 153 states have (on average 1.5686274509803921) internal successors, (240), 176 states have internal predecessors, (240), 16 states have call successors, (16), 5 states have call predecessors, (16), 8 states have return successors, (23), 19 states have call predecessors, (23), 16 states have call successors, (23) [2021-12-28 05:54:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 279 transitions. [2021-12-28 05:54:31,553 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 279 transitions. Word has length 25 [2021-12-28 05:54:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:31,553 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 279 transitions. [2021-12-28 05:54:31,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 05:54:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 279 transitions. [2021-12-28 05:54:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:54:31,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:31,556 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:31,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:31,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:31,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:31,959 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1130288229, now seen corresponding path program 1 times [2021-12-28 05:54:31,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:31,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766779396] [2021-12-28 05:54:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:31,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:31,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:31,960 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) [2021-12-28 05:54:31,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-28 05:54:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:32,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 05:54:32,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:32,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:54:32,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:32,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766779396] [2021-12-28 05:54:32,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766779396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:54:32,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:54:32,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:54:32,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933349210] [2021-12-28 05:54:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:54:32,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:54:32,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:54:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:54:32,079 INFO L87 Difference]: Start difference. First operand 201 states and 279 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 05:54:32,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:32,099 INFO L93 Difference]: Finished difference Result 158 states and 202 transitions. [2021-12-28 05:54:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:54:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-12-28 05:54:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:32,100 INFO L225 Difference]: With dead ends: 158 [2021-12-28 05:54:32,100 INFO L226 Difference]: Without dead ends: 154 [2021-12-28 05:54:32,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:54:32,101 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:32,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 339 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:54:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-28 05:54:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-12-28 05:54:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 135 states have internal predecessors, (173), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-28 05:54:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2021-12-28 05:54:32,104 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 25 [2021-12-28 05:54:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:32,105 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2021-12-28 05:54:32,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 05:54:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2021-12-28 05:54:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 05:54:32,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:32,105 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:32,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:32,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:32,306 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2108218693, now seen corresponding path program 1 times [2021-12-28 05:54:32,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:32,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010725293] [2021-12-28 05:54:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:32,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:32,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:32,307 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) [2021-12-28 05:54:32,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-28 05:54:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:32,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:54:32,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 05:54:32,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:54:32,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:32,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010725293] [2021-12-28 05:54:32,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010725293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:54:32,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:54:32,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:54:32,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386617999] [2021-12-28 05:54:32,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:54:32,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:54:32,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:54:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:54:32,400 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 05:54:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:32,431 INFO L93 Difference]: Finished difference Result 198 states and 240 transitions. [2021-12-28 05:54:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:54:32,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-12-28 05:54:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:32,433 INFO L225 Difference]: With dead ends: 198 [2021-12-28 05:54:32,433 INFO L226 Difference]: Without dead ends: 198 [2021-12-28 05:54:32,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:54:32,433 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 53 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:32,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 427 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:54:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-28 05:54:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 151. [2021-12-28 05:54:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.5135135135135136) internal successors, (168), 132 states have internal predecessors, (168), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-28 05:54:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 193 transitions. [2021-12-28 05:54:32,437 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 193 transitions. Word has length 26 [2021-12-28 05:54:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:32,437 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 193 transitions. [2021-12-28 05:54:32,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 05:54:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 193 transitions. [2021-12-28 05:54:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 05:54:32,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:32,438 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:32,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-28 05:54:32,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:32,645 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1299244922, now seen corresponding path program 1 times [2021-12-28 05:54:32,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:32,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398982308] [2021-12-28 05:54:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:32,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:32,647 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) [2021-12-28 05:54:32,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-28 05:54:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:32,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 05:54:32,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:54:32,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 05:54:33,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:33,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398982308] [2021-12-28 05:54:33,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398982308] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:54:33,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:33,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-12-28 05:54:33,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391017735] [2021-12-28 05:54:33,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:33,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:54:33,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:33,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:54:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:54:33,077 INFO L87 Difference]: Start difference. First operand 151 states and 193 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-28 05:54:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:33,129 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2021-12-28 05:54:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:54:33,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2021-12-28 05:54:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:33,130 INFO L225 Difference]: With dead ends: 172 [2021-12-28 05:54:33,130 INFO L226 Difference]: Without dead ends: 172 [2021-12-28 05:54:33,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:54:33,131 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 61 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:33,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 494 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 90 Unchecked, 0.0s Time] [2021-12-28 05:54:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-28 05:54:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 156. [2021-12-28 05:54:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 115 states have (on average 1.5043478260869565) internal successors, (173), 136 states have internal predecessors, (173), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-28 05:54:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2021-12-28 05:54:33,135 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 26 [2021-12-28 05:54:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:33,135 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2021-12-28 05:54:33,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-28 05:54:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2021-12-28 05:54:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 05:54:33,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:33,136 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:33,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:33,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:33,336 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 930272189, now seen corresponding path program 1 times [2021-12-28 05:54:33,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:33,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158875633] [2021-12-28 05:54:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:33,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:33,338 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) [2021-12-28 05:54:33,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-28 05:54:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:33,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 05:54:33,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:33,473 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-28 05:54:33,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2021-12-28 05:54:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:54:33,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:54:33,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158875633] [2021-12-28 05:54:33,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158875633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:54:33,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:54:33,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:54:33,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875106944] [2021-12-28 05:54:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:54:33,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:54:33,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:54:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:54:33,501 INFO L87 Difference]: Start difference. First operand 156 states and 198 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 05:54:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:33,683 INFO L93 Difference]: Finished difference Result 173 states and 210 transitions. [2021-12-28 05:54:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:54:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-12-28 05:54:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:33,685 INFO L225 Difference]: With dead ends: 173 [2021-12-28 05:54:33,685 INFO L226 Difference]: Without dead ends: 173 [2021-12-28 05:54:33,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:54:33,686 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 82 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:33,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 302 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2021-12-28 05:54:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-28 05:54:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2021-12-28 05:54:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 115 states have (on average 1.4869565217391305) internal successors, (171), 135 states have internal predecessors, (171), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-28 05:54:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 196 transitions. [2021-12-28 05:54:33,690 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 196 transitions. Word has length 27 [2021-12-28 05:54:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:33,691 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 196 transitions. [2021-12-28 05:54:33,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 05:54:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 196 transitions. [2021-12-28 05:54:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 05:54:33,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:33,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:33,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-28 05:54:33,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:33,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:33,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash 930272190, now seen corresponding path program 1 times [2021-12-28 05:54:33,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:33,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307610409] [2021-12-28 05:54:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:33,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:33,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:33,900 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) [2021-12-28 05:54:33,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-28 05:54:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:33,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-28 05:54:33,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:33,981 INFO L387 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 [2021-12-28 05:54:33,986 INFO L387 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 [2021-12-28 05:54:34,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:54:34,135 INFO L387 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 [2021-12-28 05:54:34,141 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:34,142 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:54:34,249 INFO L387 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 [2021-12-28 05:54:34,257 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:34,257 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:54:34,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:36,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307610409] [2021-12-28 05:54:36,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307610409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [818799103] [2021-12-28 05:54:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:36,584 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 05:54:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 05:54:36,584 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-28 05:54:36,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-12-28 05:54:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:36,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-28 05:54:36,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:36,712 INFO L387 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 [2021-12-28 05:54:36,718 INFO L387 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 [2021-12-28 05:54:36,823 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-28 05:54:36,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-28 05:54:36,837 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:36,838 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:38,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:54:38,961 INFO L387 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 [2021-12-28 05:54:38,969 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:38,969 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:54:38,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:39,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [818799103] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:39,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:39,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 11 [2021-12-28 05:54:39,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921810515] [2021-12-28 05:54:39,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:39,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:54:39,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:39,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:54:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=174, Unknown=1, NotChecked=0, Total=210 [2021-12-28 05:54:39,206 INFO L87 Difference]: Start difference. First operand 155 states and 196 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:54:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:41,861 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2021-12-28 05:54:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 05:54:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-12-28 05:54:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:41,863 INFO L225 Difference]: With dead ends: 198 [2021-12-28 05:54:41,863 INFO L226 Difference]: Without dead ends: 198 [2021-12-28 05:54:41,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=60, Invalid=280, Unknown=2, NotChecked=0, Total=342 [2021-12-28 05:54:41,864 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 152 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:41,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 755 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 509 Invalid, 0 Unknown, 67 Unchecked, 0.5s Time] [2021-12-28 05:54:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-28 05:54:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 126. [2021-12-28 05:54:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 109 states have internal predecessors, (130), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-28 05:54:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2021-12-28 05:54:41,867 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 27 [2021-12-28 05:54:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:41,867 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2021-12-28 05:54:41,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 05:54:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2021-12-28 05:54:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-28 05:54:41,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:41,868 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:41,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-12-28 05:54:42,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:42,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:42,271 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash 638376382, now seen corresponding path program 1 times [2021-12-28 05:54:42,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343415726] [2021-12-28 05:54:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:42,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:42,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:42,273 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) [2021-12-28 05:54:42,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-28 05:54:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:42,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-28 05:54:42,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:42,401 INFO L387 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 11 treesize of output 7 [2021-12-28 05:54:42,425 INFO L387 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 [2021-12-28 05:54:42,527 INFO L353 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-28 05:54:42,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 27 [2021-12-28 05:54:42,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 05:54:42,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2021-12-28 05:54:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 05:54:42,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:42,900 INFO L353 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2021-12-28 05:54:42,901 INFO L387 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 65 treesize of output 64 [2021-12-28 05:54:42,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:42,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343415726] [2021-12-28 05:54:42,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343415726] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:42,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1115903247] [2021-12-28 05:54:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:42,971 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 05:54:42,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 05:54:42,972 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-28 05:54:42,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-12-28 05:54:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:43,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-28 05:54:43,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:43,099 INFO L387 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 [2021-12-28 05:54:43,269 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:43,271 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:43,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 05:54:45,393 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|) (_ bv0 32))))) is different from true [2021-12-28 05:54:45,474 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 05:54:45,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-28 05:54:45,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-28 05:54:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-28 05:54:45,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:45,581 INFO L353 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-12-28 05:54:45,581 INFO L387 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 19 treesize of output 18 [2021-12-28 05:54:45,586 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_252) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) is different from false [2021-12-28 05:54:45,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1115903247] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:45,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:54:45,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-12-28 05:54:45,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44953528] [2021-12-28 05:54:45,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:54:45,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-28 05:54:45,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:54:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-28 05:54:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=897, Unknown=2, NotChecked=122, Total=1122 [2021-12-28 05:54:45,599 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 23 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-28 05:54:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:54:55,062 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2021-12-28 05:54:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 05:54:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.5) internal successors, (39), 23 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-12-28 05:54:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:54:55,064 INFO L225 Difference]: With dead ends: 136 [2021-12-28 05:54:55,064 INFO L226 Difference]: Without dead ends: 136 [2021-12-28 05:54:55,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=349, Invalid=2007, Unknown=4, NotChecked=190, Total=2550 [2021-12-28 05:54:55,065 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 77 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:54:55,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 617 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 606 Invalid, 0 Unknown, 149 Unchecked, 0.5s Time] [2021-12-28 05:54:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-28 05:54:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2021-12-28 05:54:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 111 states have internal predecessors, (132), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-28 05:54:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2021-12-28 05:54:55,068 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 29 [2021-12-28 05:54:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:54:55,068 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2021-12-28 05:54:55,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.5) internal successors, (39), 23 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-28 05:54:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2021-12-28 05:54:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-28 05:54:55,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:54:55,069 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:54:55,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:55,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-28 05:54:55,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:54:55,471 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-28 05:54:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:54:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash 638376383, now seen corresponding path program 1 times [2021-12-28 05:54:55,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:54:55,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111683250] [2021-12-28 05:54:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:55,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:54:55,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:54:55,473 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 05:54:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-28 05:54:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:55,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-28 05:54:55,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:55,555 INFO L387 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 [2021-12-28 05:54:55,607 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:54:55,607 INFO L387 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 12 treesize of output 12 [2021-12-28 05:54:55,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 05:54:55,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 05:54:55,805 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 05:54:55,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-28 05:54:55,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:54:55,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-28 05:54:55,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-28 05:54:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:54:55,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:54:56,195 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 05:54:56,195 INFO L387 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 50 treesize of output 54 [2021-12-28 05:54:56,317 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_277 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_277) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset|))) (forall ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_1) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (or (forall ((v_ArrVal_276 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_276) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (forall ((v_ArrVal_277 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_277) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (_ bv0 32))))) is different from false [2021-12-28 05:54:56,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:54:56,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111683250] [2021-12-28 05:54:56,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111683250] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:54:56,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716077314] [2021-12-28 05:54:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:54:56,378 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 05:54:56,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 05:54:56,379 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-28 05:54:56,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-12-28 05:54:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:54:56,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-28 05:54:56,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:54:56,511 INFO L387 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 [2021-12-28 05:54:56,674 INFO L387 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 [2021-12-28 05:54:58,754 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-28 05:54:58,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2021-12-28 05:54:58,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 05:54:58,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 05:54:58,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 05:54:58,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-28 05:55:03,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:55:03,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-12-28 05:55:03,298 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-28 05:55:03,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:55:03,436 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 05:55:03,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-28 05:55:03,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:55:03,556 INFO L387 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 15 treesize of output 7 [2021-12-28 05:55:03,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-28 05:55:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:55:03,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:55:03,684 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_304) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_305) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) (forall ((v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_304) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2021-12-28 05:55:04,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [716077314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:55:04,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:55:04,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-12-28 05:55:04,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035973600] [2021-12-28 05:55:04,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:55:04,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-28 05:55:04,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:55:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-28 05:55:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1067, Unknown=14, NotChecked=134, Total=1332 [2021-12-28 05:55:04,214 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)