./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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_test13_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a406420701ce6274f0517b83ae1d565a6306d39 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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_test13_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a406420701ce6274f0517b83ae1d565a6306d39 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Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:45:56,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:45:56,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:45:56,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:45:56,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:45:56,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:45:56,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:45:56,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:45:56,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:45:56,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:45:56,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:45:56,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:45:56,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:45:56,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:45:56,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:45:56,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:45:56,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:45:56,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:45:56,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:45:56,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:45:56,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:45:56,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:45:56,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:45:56,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:45:56,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:45:56,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:45:56,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:45:56,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:45:56,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:45:56,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:45:56,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:45:56,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:45:56,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:45:56,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:45:56,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:45:56,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:45:56,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:45:56,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:45:56,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:45:56,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:45:56,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:45:56,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:45:56,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:45:56,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:45:56,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:45:56,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:45:56,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:45:56,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:45:56,238 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:45:56,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:45:56,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:45:56,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:45:56,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:45:56,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:45:56,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:45:56,249 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:45:56,249 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:45:56,249 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:45:56,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:45:56,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:45:56,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:45:56,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:45:56,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:45:56,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:45:56,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:45:56,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:45:56,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:45:56,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:45:56,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:45:56,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:45:56,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:45:56,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a406420701ce6274f0517b83ae1d565a6306d39 [2021-08-30 17:45:56,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:45:56,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:45:56,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:45:56,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:45:56,617 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:45:56,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i [2021-08-30 17:45:56,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa0b9ac3/a8808c1d2060488e9dba20d0e23830bb/FLAGf3a1ee804 [2021-08-30 17:45:57,046 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:45:57,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i [2021-08-30 17:45:57,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa0b9ac3/a8808c1d2060488e9dba20d0e23830bb/FLAGf3a1ee804 [2021-08-30 17:45:57,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa0b9ac3/a8808c1d2060488e9dba20d0e23830bb [2021-08-30 17:45:57,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:45:57,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:45:57,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:45:57,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:45:57,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:45:57,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:45:57" (1/1) ... [2021-08-30 17:45:57,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c84e7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:45:57, skipping insertion in model container [2021-08-30 17:45:57,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:45:57" (1/1) ... [2021-08-30 17:45:57,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:45:57,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:45:57,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:45:57,782 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) [2021-08-30 17:45:57,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fcb304a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:45:57, skipping insertion in model container [2021-08-30 17:45:57,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:45:57,784 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:45:57,786 INFO L158 Benchmark]: Toolchain (without parser) took 368.57ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 33.1MB in the beginning and 57.3MB in the end (delta: -24.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 17:45:57,787 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 37.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:45:57,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.74ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 32.7MB in the beginning and 57.3MB in the end (delta: -24.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 17:45:57,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 37.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.74ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 32.7MB in the beginning and 57.3MB in the end (delta: -24.6MB). Peak memory consumption was 10.5MB. 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:45:59,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:45:59,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:45:59,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:45:59,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:45:59,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:45:59,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:45:59,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:45:59,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:45:59,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:45:59,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:45:59,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:45:59,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:45:59,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:45:59,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:45:59,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:45:59,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:45:59,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:45:59,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:45:59,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:45:59,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:45:59,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:45:59,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:45:59,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:45:59,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:45:59,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:45:59,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:45:59,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:45:59,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:45:59,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:45:59,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:45:59,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:45:59,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:45:59,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:45:59,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:45:59,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:45:59,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:45:59,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:45:59,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:45:59,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:45:59,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:45:59,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:45:59,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:45:59,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:45:59,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:45:59,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:45:59,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:45:59,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:45:59,749 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:45:59,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:45:59,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:45:59,751 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:45:59,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:45:59,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:45:59,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:45:59,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:45:59,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:45:59,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:45:59,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:45:59,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:45:59,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:45:59,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:45:59,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:45:59,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:45:59,759 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:45:59,759 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:45:59,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:45:59,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:45:59,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a406420701ce6274f0517b83ae1d565a6306d39 [2021-08-30 17:45:59,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:46:00,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:46:00,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:46:00,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:46:00,017 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:46:00,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i [2021-08-30 17:46:00,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77de1d5b5/30be4286b17b42d0a815b7b811d1c9fa/FLAGdf2a320fa [2021-08-30 17:46:00,485 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:46:00,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i [2021-08-30 17:46:00,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77de1d5b5/30be4286b17b42d0a815b7b811d1c9fa/FLAGdf2a320fa [2021-08-30 17:46:00,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77de1d5b5/30be4286b17b42d0a815b7b811d1c9fa [2021-08-30 17:46:00,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:46:00,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:46:00,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:46:00,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:46:00,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:46:00,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:46:00" (1/1) ... [2021-08-30 17:46:00,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c95dd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:00, skipping insertion in model container [2021-08-30 17:46:00,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:46:00" (1/1) ... [2021-08-30 17:46:00,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:46:00,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:46:01,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:46:01,129 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:46:01,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:46:01,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:46:01,188 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:46:01,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:46:01,244 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:46:01,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01 WrapperNode [2021-08-30 17:46:01,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:46:01,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:46:01,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:46:01,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:46:01,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:46:01,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:46:01,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:46:01,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:46:01,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (1/1) ... [2021-08-30 17:46:01,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:46:01,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:46:01,367 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) [2021-08-30 17:46:01,434 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 [2021-08-30 17:46:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:46:01,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:46:01,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:46:01,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:46:01,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:46:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:46:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:46:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:46:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:46:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:46:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:46:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:46:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:46:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:46:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:46:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:46:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:46:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:46:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:46:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:46:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:46:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:46:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:46:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_13 [2021-08-30 17:46:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure free_unsafe_13 [2021-08-30 17:46:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:46:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:46:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:46:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:46:01,492 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:46:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:46:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:46:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:46:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:46:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:46:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:46:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:46:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:46:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:46:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:46:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:46:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:46:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:46:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:46:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:46:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:46:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:46:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:46:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:46:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:46:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:46:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:46:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:46:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:46:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:46:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:46:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:46:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:46:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:46:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:46:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:46:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:46:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:46:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:46:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:46:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:46:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:46:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:46:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:46:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:46:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:46:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:46:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:46:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:46:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_13 [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure free_unsafe_13 [2021-08-30 17:46:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:46:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:46:01,939 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:46:02,022 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:46:02,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:46:02,085 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-30 17:46:02,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:46:02 BoogieIcfgContainer [2021-08-30 17:46:02,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:46:02,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:46:02,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:46:02,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:46:02,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:46:00" (1/3) ... [2021-08-30 17:46:02,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea71d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:46:02, skipping insertion in model container [2021-08-30 17:46:02,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:46:01" (2/3) ... [2021-08-30 17:46:02,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea71d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:46:02, skipping insertion in model container [2021-08-30 17:46:02,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:46:02" (3/3) ... [2021-08-30 17:46:02,094 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_2.i [2021-08-30 17:46:02,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:46:02,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-08-30 17:46:02,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:46:02,135 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, mConcurrency=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 [2021-08-30 17:46:02,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-08-30 17:46:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 99 states have (on average 1.6464646464646464) internal successors, (163), 153 states have internal predecessors, (163), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-08-30 17:46:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:46:02,155 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:02,155 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:02,155 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:02,159 INFO L82 PathProgramCache]: Analyzing trace with hash 974207510, now seen corresponding path program 1 times [2021-08-30 17:46:02,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:02,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54064384] [2021-08-30 17:46:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:02,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:02,169 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) [2021-08-30 17:46:02,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:46:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:02,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:46:02,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:02,507 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:46:02,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:46:02,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:46:02,675 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:46:02,676 INFO L388 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 15 treesize of output 20 [2021-08-30 17:46:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:02,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:02,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:02,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54064384] [2021-08-30 17:46:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54064384] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:02,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-08-30 17:46:02,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685662593] [2021-08-30 17:46:02,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:46:02,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:46:02,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:46:02,851 INFO L87 Difference]: Start difference. First operand has 192 states, 99 states have (on average 1.6464646464646464) internal successors, (163), 153 states have internal predecessors, (163), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:46:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:03,189 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2021-08-30 17:46:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:46:03,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-08-30 17:46:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:03,196 INFO L225 Difference]: With dead ends: 95 [2021-08-30 17:46:03,196 INFO L226 Difference]: Without dead ends: 92 [2021-08-30 17:46:03,197 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.19ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:46:03,199 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 275 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 251.70ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:03,200 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 15 Invalid, 352 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [47 Valid, 272 Invalid, 0 Unknown, 33 Unchecked, 251.70ms Time] [2021-08-30 17:46:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-30 17:46:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-08-30 17:46:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 70 states have internal predecessors, (72), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:46:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2021-08-30 17:46:03,223 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 17 [2021-08-30 17:46:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:03,223 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2021-08-30 17:46:03,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:46:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2021-08-30 17:46:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:46:03,224 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:03,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:03,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:03,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:03,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:03,432 INFO L82 PathProgramCache]: Analyzing trace with hash 974207511, now seen corresponding path program 1 times [2021-08-30 17:46:03,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:03,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821994960] [2021-08-30 17:46:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:03,432 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:03,435 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) [2021-08-30 17:46:03,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:46:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:03,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-30 17:46:03,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:03,599 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:46:03,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-08-30 17:46:03,611 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:46:03,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-08-30 17:46:03,920 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-08-30 17:46:03,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 56 [2021-08-30 17:46:03,926 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:46:03,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-08-30 17:46:06,098 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-30 17:46:06,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 61 [2021-08-30 17:46:06,134 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-08-30 17:46:06,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 72 [2021-08-30 17:46:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:06,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:15,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:15,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821994960] [2021-08-30 17:46:15,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821994960] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:15,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:15,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:46:15,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355235540] [2021-08-30 17:46:15,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:46:15,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:46:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=143, Unknown=1, NotChecked=0, Total=182 [2021-08-30 17:46:15,681 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:46:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:16,277 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-08-30 17:46:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:46:16,278 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2021-08-30 17:46:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:16,281 INFO L225 Difference]: With dead ends: 104 [2021-08-30 17:46:16,282 INFO L226 Difference]: Without dead ends: 104 [2021-08-30 17:46:16,282 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 10604.90ms TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2021-08-30 17:46:16,283 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 480.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 541.97ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:16,283 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 58 Invalid, 518 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 215 Unchecked, 541.97ms Time] [2021-08-30 17:46:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-30 17:46:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-08-30 17:46:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 50 states have (on average 1.6) internal successors, (80), 78 states have internal predecessors, (80), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2021-08-30 17:46:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2021-08-30 17:46:16,291 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 17 [2021-08-30 17:46:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2021-08-30 17:46:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:46:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2021-08-30 17:46:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:46:16,292 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:16,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:16,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:16,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:16,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1577949450, now seen corresponding path program 1 times [2021-08-30 17:46:16,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:16,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219150876] [2021-08-30 17:46:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:16,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:16,507 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) [2021-08-30 17:46:16,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:46:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:16,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:46:16,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:16,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:16,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:16,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219150876] [2021-08-30 17:46:16,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219150876] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:16,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:16,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:46:16,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208305114] [2021-08-30 17:46:16,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:46:16,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:46:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:46:16,803 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:46:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:17,133 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2021-08-30 17:46:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:46:17,133 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-30 17:46:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:17,134 INFO L225 Difference]: With dead ends: 96 [2021-08-30 17:46:17,134 INFO L226 Difference]: Without dead ends: 96 [2021-08-30 17:46:17,134 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.40ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:46:17,135 INFO L928 BasicCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 312.96ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:17,135 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 87 Invalid, 292 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 312.96ms Time] [2021-08-30 17:46:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-30 17:46:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-08-30 17:46:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 46 states have (on average 1.608695652173913) internal successors, (74), 72 states have internal predecessors, (74), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-30 17:46:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2021-08-30 17:46:17,144 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 17 [2021-08-30 17:46:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:17,145 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2021-08-30 17:46:17,145 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:46:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2021-08-30 17:46:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:46:17,146 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:17,146 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:17,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-30 17:46:17,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:17,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1522301663, now seen corresponding path program 1 times [2021-08-30 17:46:17,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:17,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434635324] [2021-08-30 17:46:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:17,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:17,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:17,355 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) [2021-08-30 17:46:17,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:46:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:17,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:46:17,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:17,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-08-30 17:46:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:17,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:17,612 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-08-30 17:46:17,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 17:46:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:17,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:17,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434635324] [2021-08-30 17:46:17,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434635324] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:17,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:17,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-08-30 17:46:17,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123652499] [2021-08-30 17:46:17,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:46:17,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:46:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:46:17,672 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:46:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:18,371 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2021-08-30 17:46:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:46:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-08-30 17:46:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:18,372 INFO L225 Difference]: With dead ends: 134 [2021-08-30 17:46:18,372 INFO L226 Difference]: Without dead ends: 134 [2021-08-30 17:46:18,373 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 130.64ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:46:18,373 INFO L928 BasicCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 518.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 598.59ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:18,373 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 118 Invalid, 497 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [6 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 598.59ms Time] [2021-08-30 17:46:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-30 17:46:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 93. [2021-08-30 17:46:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 71 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-30 17:46:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2021-08-30 17:46:18,380 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 20 [2021-08-30 17:46:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:18,380 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2021-08-30 17:46:18,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:46:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2021-08-30 17:46:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:46:18,381 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:18,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:18,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:18,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:18,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:18,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1522301664, now seen corresponding path program 1 times [2021-08-30 17:46:18,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:18,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149708793] [2021-08-30 17:46:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:18,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:18,591 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) [2021-08-30 17:46:18,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:46:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:18,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 50 conjunts are in the unsatisfiable core [2021-08-30 17:46:18,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:18,736 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:46:18,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-08-30 17:46:18,750 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:46:18,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-08-30 17:46:19,210 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-08-30 17:46:19,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 54 [2021-08-30 17:46:19,223 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:46:19,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2021-08-30 17:46:21,428 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-30 17:46:21,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2021-08-30 17:46:21,467 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-08-30 17:46:21,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 74 [2021-08-30 17:46:21,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-08-30 17:46:21,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-08-30 17:46:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:21,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:41,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:41,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149708793] [2021-08-30 17:46:41,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149708793] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:41,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:41,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-08-30 17:46:41,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292218597] [2021-08-30 17:46:41,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-30 17:46:41,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-30 17:46:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=319, Unknown=8, NotChecked=0, Total=380 [2021-08-30 17:46:41,623 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:46:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:42,789 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2021-08-30 17:46:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:46:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2021-08-30 17:46:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:42,790 INFO L225 Difference]: With dead ends: 94 [2021-08-30 17:46:42,791 INFO L226 Difference]: Without dead ends: 94 [2021-08-30 17:46:42,791 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 21730.22ms TimeCoverageRelationStatistics Valid=107, Invalid=535, Unknown=8, NotChecked=0, Total=650 [2021-08-30 17:46:42,791 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 779.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 885.38ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:42,792 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 108 Invalid, 875 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [11 Valid, 519 Invalid, 0 Unknown, 345 Unchecked, 885.38ms Time] [2021-08-30 17:46:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-30 17:46:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-08-30 17:46:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 46 states have (on average 1.565217391304348) internal successors, (72), 70 states have internal predecessors, (72), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-30 17:46:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2021-08-30 17:46:42,798 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 20 [2021-08-30 17:46:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:42,798 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2021-08-30 17:46:42,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:46:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2021-08-30 17:46:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 17:46:42,799 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:42,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:42,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:43,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:43,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_unsafe_13Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:43,007 INFO L82 PathProgramCache]: Analyzing trace with hash -172420779, now seen corresponding path program 1 times [2021-08-30 17:46:43,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:43,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293702000] [2021-08-30 17:46:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:43,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:43,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:43,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:46:43,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:46:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:43,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:46:43,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:43,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:43,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:43,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293702000] [2021-08-30 17:46:43,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293702000] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:43,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:43,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:46:43,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631866625] [2021-08-30 17:46:43,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:46:43,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:46:43,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:46:43,241 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:46:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:43,475 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-08-30 17:46:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:46:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-08-30 17:46:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:43,476 INFO L225 Difference]: With dead ends: 94 [2021-08-30 17:46:43,476 INFO L226 Difference]: Without dead ends: 94 [2021-08-30 17:46:43,476 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.91ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:46:43,477 INFO L928 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.01ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:43,477 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 87 Invalid, 277 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 228.01ms Time] [2021-08-30 17:46:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-30 17:46:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-08-30 17:46:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 70 states have internal predecessors, (71), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2021-08-30 17:46:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2021-08-30 17:46:43,484 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 19 [2021-08-30 17:46:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:43,485 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2021-08-30 17:46:43,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:46:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2021-08-30 17:46:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 17:46:43,485 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:43,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:43,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-30 17:46:43,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:43,695 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_unsafe_13Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:43,695 INFO L82 PathProgramCache]: Analyzing trace with hash -368934284, now seen corresponding path program 1 times [2021-08-30 17:46:43,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:43,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560047669] [2021-08-30 17:46:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:43,696 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:43,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:43,697 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) [2021-08-30 17:46:43,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:46:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:46:43,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:43,851 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:46:43,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-08-30 17:46:43,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-08-30 17:46:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:43,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:44,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:46:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:44,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:44,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560047669] [2021-08-30 17:46:44,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560047669] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:44,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:44,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:46:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887629389] [2021-08-30 17:46:44,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:46:44,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:46:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:46:44,388 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:44,766 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2021-08-30 17:46:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:46:44,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2021-08-30 17:46:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:44,769 INFO L225 Difference]: With dead ends: 145 [2021-08-30 17:46:44,769 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 17:46:44,769 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.02ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:46:44,770 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 197 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351.86ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:44,770 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 24 Invalid, 297 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [38 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 351.86ms Time] [2021-08-30 17:46:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 17:46:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2021-08-30 17:46:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 66 states have (on average 1.5757575757575757) internal successors, (104), 90 states have internal predecessors, (104), 14 states have call successors, (14), 14 states have call predecessors, (14), 15 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-08-30 17:46:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-08-30 17:46:44,791 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 19 [2021-08-30 17:46:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-08-30 17:46:44,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-08-30 17:46:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:46:44,793 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:44,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:44,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:45,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:45,005 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:45,006 INFO L82 PathProgramCache]: Analyzing trace with hash -53288634, now seen corresponding path program 1 times [2021-08-30 17:46:45,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:45,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126860825] [2021-08-30 17:46:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:45,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:45,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:45,008 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) [2021-08-30 17:46:45,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:46:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:45,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:46:45,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:45,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:46:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:45,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:45,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:45,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126860825] [2021-08-30 17:46:45,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126860825] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:45,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:45,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-08-30 17:46:45,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617754922] [2021-08-30 17:46:45,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 17:46:45,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 17:46:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:46:45,338 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:46:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:45,797 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2021-08-30 17:46:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:46:45,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-08-30 17:46:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:45,798 INFO L225 Difference]: With dead ends: 117 [2021-08-30 17:46:45,798 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:46:45,798 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 86.93ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:46:45,799 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 364.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 432.17ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:45,799 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 133 Invalid, 554 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [3 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 432.17ms Time] [2021-08-30 17:46:45,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:46:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:46:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 88 states have internal predecessors, (102), 14 states have call successors, (14), 14 states have call predecessors, (14), 15 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-08-30 17:46:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2021-08-30 17:46:45,802 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 21 [2021-08-30 17:46:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:45,802 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2021-08-30 17:46:45,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:46:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2021-08-30 17:46:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:46:45,803 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:45,803 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:45,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:46,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:46,010 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash -53288633, now seen corresponding path program 1 times [2021-08-30 17:46:46,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:46,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597492417] [2021-08-30 17:46:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:46,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:46,012 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) [2021-08-30 17:46:46,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:46:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 17:46:46,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:46,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:46:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:46,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:46,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:46,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597492417] [2021-08-30 17:46:46,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597492417] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:46,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:46,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-08-30 17:46:46,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546049448] [2021-08-30 17:46:46,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-30 17:46:46,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-30 17:46:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-30 17:46:46,856 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:46:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:48,136 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2021-08-30 17:46:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:46:48,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-08-30 17:46:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:48,137 INFO L225 Difference]: With dead ends: 115 [2021-08-30 17:46:48,137 INFO L226 Difference]: Without dead ends: 115 [2021-08-30 17:46:48,137 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 533.58ms TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:46:48,138 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1060.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1199.44ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:48,138 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 180 Invalid, 747 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [4 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1199.44ms Time] [2021-08-30 17:46:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-30 17:46:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-30 17:46:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 86 states have internal predecessors, (100), 14 states have call successors, (14), 14 states have call predecessors, (14), 15 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-08-30 17:46:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-08-30 17:46:48,141 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 21 [2021-08-30 17:46:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:48,141 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-08-30 17:46:48,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:46:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-08-30 17:46:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:46:48,142 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:48,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:48,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-30 17:46:48,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:48,342 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_unsafe_13Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:48,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1936442228, now seen corresponding path program 1 times [2021-08-30 17:46:48,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:48,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804033688] [2021-08-30 17:46:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:48,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:48,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:48,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:46:48,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:46:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:48,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 17:46:48,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:48,496 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:46:48,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:46:48,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:46:48,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-08-30 17:46:48,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-08-30 17:46:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:48,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:48,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-08-30 17:46:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:48,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:48,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804033688] [2021-08-30 17:46:48,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804033688] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:48,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:48,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-08-30 17:46:48,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38585539] [2021-08-30 17:46:48,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:46:48,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:46:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:46:48,884 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:49,477 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2021-08-30 17:46:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:46:49,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2021-08-30 17:46:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:49,478 INFO L225 Difference]: With dead ends: 155 [2021-08-30 17:46:49,478 INFO L226 Difference]: Without dead ends: 147 [2021-08-30 17:46:49,479 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 168.40ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:46:49,479 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 163 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 431.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.48ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:49,479 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 22 Invalid, 554 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [74 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 502.48ms Time] [2021-08-30 17:46:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-30 17:46:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2021-08-30 17:46:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 91 states have internal predecessors, (108), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (16), 16 states have call predecessors, (16), 13 states have call successors, (16) [2021-08-30 17:46:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 140 transitions. [2021-08-30 17:46:49,483 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 140 transitions. Word has length 21 [2021-08-30 17:46:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:49,483 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 140 transitions. [2021-08-30 17:46:49,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 140 transitions. [2021-08-30 17:46:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:46:49,484 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:49,484 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:49,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-08-30 17:46:49,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:49,684 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_unsafe_13Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:49,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1936442229, now seen corresponding path program 1 times [2021-08-30 17:46:49,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:49,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543800000] [2021-08-30 17:46:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:49,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:49,686 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) [2021-08-30 17:46:49,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:46:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:49,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-30 17:46:49,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:49,809 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:46:49,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-08-30 17:46:49,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-08-30 17:46:49,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:46:49,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:46:50,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-08-30 17:46:50,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-08-30 17:46:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:50,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:50,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-08-30 17:46:50,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-08-30 17:46:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:50,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:50,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543800000] [2021-08-30 17:46:50,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543800000] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:50,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:50,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-30 17:46:50,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67056909] [2021-08-30 17:46:50,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 17:46:50,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 17:46:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:46:50,688 INFO L87 Difference]: Start difference. First operand 123 states and 140 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:52,742 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2021-08-30 17:46:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 17:46:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2021-08-30 17:46:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:52,744 INFO L225 Difference]: With dead ends: 165 [2021-08-30 17:46:52,744 INFO L226 Difference]: Without dead ends: 163 [2021-08-30 17:46:52,744 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 777.33ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:46:52,744 INFO L928 BasicCegarLoop]: 17 mSDtfsCounter, 240 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1384.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1532.89ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:52,744 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 29 Invalid, 616 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [91 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1532.89ms Time] [2021-08-30 17:46:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-30 17:46:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 119. [2021-08-30 17:46:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 88 states have internal predecessors, (104), 15 states have call successors, (15), 15 states have call predecessors, (15), 15 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2021-08-30 17:46:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-08-30 17:46:52,748 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 21 [2021-08-30 17:46:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:52,748 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-08-30 17:46:52,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-08-30 17:46:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:46:52,748 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:52,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:52,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-08-30 17:46:52,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:52,950 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash 329232585, now seen corresponding path program 1 times [2021-08-30 17:46:52,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:52,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485026565] [2021-08-30 17:46:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:52,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:52,952 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) [2021-08-30 17:46:52,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:46:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:53,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:46:53,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:53,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:53,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:53,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485026565] [2021-08-30 17:46:53,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485026565] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:53,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:53,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:46:53,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80602657] [2021-08-30 17:46:53,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:46:53,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:53,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:46:53,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:46:53,173 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:46:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:53,383 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2021-08-30 17:46:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:46:53,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-08-30 17:46:53,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:53,385 INFO L225 Difference]: With dead ends: 118 [2021-08-30 17:46:53,385 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:46:53,385 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.82ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:46:53,385 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.39ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:53,385 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 74 Invalid, 247 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 200.39ms Time] [2021-08-30 17:46:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:46:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:46:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 69 states have (on average 1.4927536231884058) internal successors, (103), 87 states have internal predecessors, (103), 15 states have call successors, (15), 15 states have call predecessors, (15), 15 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2021-08-30 17:46:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2021-08-30 17:46:53,388 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 23 [2021-08-30 17:46:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:53,388 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2021-08-30 17:46:53,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 17:46:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2021-08-30 17:46:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:46:53,389 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:53,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:53,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:53,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:53,597 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash 329232586, now seen corresponding path program 1 times [2021-08-30 17:46:53,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:53,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081346286] [2021-08-30 17:46:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:53,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:53,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:53,599 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:46:53,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:46:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:53,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:46:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:53,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:53,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:46:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:54,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:54,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081346286] [2021-08-30 17:46:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081346286] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:54,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:54,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:46:54,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757936033] [2021-08-30 17:46:54,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:46:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:46:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:46:54,094 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:46:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:55,053 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-08-30 17:46:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:46:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2021-08-30 17:46:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:55,056 INFO L225 Difference]: With dead ends: 117 [2021-08-30 17:46:55,056 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:46:55,056 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 307.82ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:46:55,058 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 153 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 758.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 859.25ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:55,058 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 148 Invalid, 508 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [20 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 859.25ms Time] [2021-08-30 17:46:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:46:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:46:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 86 states have internal predecessors, (102), 15 states have call successors, (15), 15 states have call predecessors, (15), 15 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2021-08-30 17:46:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-08-30 17:46:55,071 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 23 [2021-08-30 17:46:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:55,071 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-08-30 17:46:55,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 17:46:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-08-30 17:46:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 17:46:55,075 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:55,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:55,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-08-30 17:46:55,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:55,276 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_list_delErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:55,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2034385481, now seen corresponding path program 1 times [2021-08-30 17:46:55,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:55,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032688378] [2021-08-30 17:46:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:55,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:55,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:55,285 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) [2021-08-30 17:46:55,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 17:46:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:55,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-30 17:46:55,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:55,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:46:55,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:46:55,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-08-30 17:46:55,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-08-30 17:46:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:55,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:55,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:55,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032688378] [2021-08-30 17:46:55,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032688378] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:55,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:55,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-08-30 17:46:55,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752756729] [2021-08-30 17:46:55,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:46:55,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:46:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:46:55,864 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:56,463 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2021-08-30 17:46:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:46:56,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2021-08-30 17:46:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:56,464 INFO L225 Difference]: With dead ends: 109 [2021-08-30 17:46:56,464 INFO L226 Difference]: Without dead ends: 109 [2021-08-30 17:46:56,465 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 171.60ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:46:56,465 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 194 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 435.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 508.38ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:56,465 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 20 Invalid, 576 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [67 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 508.38ms Time] [2021-08-30 17:46:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-30 17:46:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2021-08-30 17:46:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 74 states have internal predecessors, (79), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2021-08-30 17:46:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-08-30 17:46:56,468 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 26 [2021-08-30 17:46:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:56,468 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-08-30 17:46:56,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:46:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-08-30 17:46:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:46:56,469 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:56,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:56,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:56,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:56,669 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:56,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1107383315, now seen corresponding path program 1 times [2021-08-30 17:46:56,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:56,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862826770] [2021-08-30 17:46:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:56,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:56,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:56,671 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) [2021-08-30 17:46:56,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-30 17:46:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:56,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 17:46:56,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:56,809 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:46:56,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:46:56,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-08-30 17:46:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:56,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:57,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:46:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:57,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:57,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862826770] [2021-08-30 17:46:57,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862826770] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:57,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:57,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-08-30 17:46:57,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948214594] [2021-08-30 17:46:57,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:46:57,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:46:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:46:57,059 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-30 17:46:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:57,322 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-08-30 17:46:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:46:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 28 [2021-08-30 17:46:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:57,323 INFO L225 Difference]: With dead ends: 99 [2021-08-30 17:46:57,323 INFO L226 Difference]: Without dead ends: 99 [2021-08-30 17:46:57,323 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 53.01ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:46:57,324 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236.51ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:57,324 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 15 Invalid, 285 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [38 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 236.51ms Time] [2021-08-30 17:46:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-30 17:46:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-08-30 17:46:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 72 states have internal predecessors, (75), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2021-08-30 17:46:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2021-08-30 17:46:57,326 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 28 [2021-08-30 17:46:57,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:57,326 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2021-08-30 17:46:57,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-08-30 17:46:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2021-08-30 17:46:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:46:57,326 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:57,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:57,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:57,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:57,533 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:57,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1107383314, now seen corresponding path program 1 times [2021-08-30 17:46:57,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:57,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968860659] [2021-08-30 17:46:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:57,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:57,535 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) [2021-08-30 17:46:57,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-30 17:46:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:57,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:46:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:57,690 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:46:57,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-08-30 17:46:57,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-08-30 17:46:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:57,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:58,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:46:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:58,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:58,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968860659] [2021-08-30 17:46:58,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968860659] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:58,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:58,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-30 17:46:58,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850200280] [2021-08-30 17:46:58,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:46:58,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:46:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:46:58,225 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-30 17:46:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:46:59,080 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-08-30 17:46:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:46:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 28 [2021-08-30 17:46:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:46:59,082 INFO L225 Difference]: With dead ends: 98 [2021-08-30 17:46:59,082 INFO L226 Difference]: Without dead ends: 79 [2021-08-30 17:46:59,082 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 282.35ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:46:59,082 INFO L928 BasicCegarLoop]: 17 mSDtfsCounter, 104 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 634.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 711.16ms IncrementalHoareTripleChecker+Time [2021-08-30 17:46:59,082 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 26 Invalid, 405 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [23 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 711.16ms Time] [2021-08-30 17:46:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-30 17:46:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-08-30 17:46:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 57 states have internal predecessors, (58), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:46:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-08-30 17:46:59,084 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 28 [2021-08-30 17:46:59,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:46:59,084 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-08-30 17:46:59,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-30 17:46:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-08-30 17:46:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 17:46:59,085 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:46:59,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:46:59,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-30 17:46:59,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:46:59,285 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting free_unsafe_13Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:46:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:46:59,285 INFO L82 PathProgramCache]: Analyzing trace with hash 901617075, now seen corresponding path program 1 times [2021-08-30 17:46:59,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:46:59,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832873796] [2021-08-30 17:46:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:46:59,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:46:59,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:46:59,287 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) [2021-08-30 17:46:59,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-30 17:46:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:46:59,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:46:59,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:46:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:59,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:46:59,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:46:59,842 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:46:59,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-08-30 17:46:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:46:59,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:46:59,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832873796] [2021-08-30 17:46:59,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832873796] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:46:59,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:46:59,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-08-30 17:46:59,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655580148] [2021-08-30 17:46:59,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:46:59,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:46:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:46:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:46:59,938 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-08-30 17:47:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:47:00,253 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-08-30 17:47:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:47:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 33 [2021-08-30 17:47:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:47:00,254 INFO L225 Difference]: With dead ends: 78 [2021-08-30 17:47:00,254 INFO L226 Difference]: Without dead ends: 78 [2021-08-30 17:47:00,254 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 138.09ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-30 17:47:00,255 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 230 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.46ms IncrementalHoareTripleChecker+Time [2021-08-30 17:47:00,255 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 23 Invalid, 355 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [60 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 292.46ms Time] [2021-08-30 17:47:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-30 17:47:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-30 17:47:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 56 states have internal predecessors, (57), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:47:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-08-30 17:47:00,269 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 33 [2021-08-30 17:47:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:47:00,271 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-08-30 17:47:00,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-08-30 17:47:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-08-30 17:47:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-30 17:47:00,272 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:47:00,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:47:00,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:00,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:47:00,480 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting free_unsafe_13Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:47:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:47:00,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1129381133, now seen corresponding path program 1 times [2021-08-30 17:47:00,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:47:00,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499209209] [2021-08-30 17:47:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:00,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:47:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:47:00,494 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) [2021-08-30 17:47:00,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-30 17:47:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:00,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 17:47:00,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:00,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:47:00,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:01,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-08-30 17:47:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:01,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:01,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-08-30 17:47:01,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:47:01,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499209209] [2021-08-30 17:47:01,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:47:01,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1032333286] [2021-08-30 17:47:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:01,774 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:47:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:47:01,775 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) [2021-08-30 17:47:01,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-08-30 17:47:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:01,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-30 17:47:01,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:02,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:02,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:47:02,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:02,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-08-30 17:47:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:02,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:03,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2021-08-30 17:47:03,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2021-08-30 17:47:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1032333286] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:47:03,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:47:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 12] imperfect sequences [] total 24 [2021-08-30 17:47:03,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653769154] [2021-08-30 17:47:03,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-30 17:47:03,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:47:03,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-30 17:47:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260 [2021-08-30 17:47:03,792 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 25 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 8 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-30 17:47:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:47:04,767 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2021-08-30 17:47:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-30 17:47:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 8 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 35 [2021-08-30 17:47:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:47:04,770 INFO L225 Difference]: With dead ends: 114 [2021-08-30 17:47:04,770 INFO L226 Difference]: Without dead ends: 114 [2021-08-30 17:47:04,771 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 72 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 1715.04ms TimeCoverageRelationStatistics Valid=297, Invalid=1959, Unknown=0, NotChecked=0, Total=2256 [2021-08-30 17:47:04,771 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 504.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 577.45ms IncrementalHoareTripleChecker+Time [2021-08-30 17:47:04,772 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 73 Invalid, 1195 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [39 Valid, 681 Invalid, 0 Unknown, 475 Unchecked, 577.45ms Time] [2021-08-30 17:47:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-30 17:47:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 77. [2021-08-30 17:47:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 43 states have (on average 1.302325581395349) internal successors, (56), 55 states have internal predecessors, (56), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:47:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-08-30 17:47:04,778 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 35 [2021-08-30 17:47:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:47:04,778 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-08-30 17:47:04,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 8 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-30 17:47:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-08-30 17:47:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-30 17:47:04,780 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:47:04,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:47:04,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:04,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:05,190 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 [2021-08-30 17:47:05,191 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting free_unsafe_13Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:47:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:47:05,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1129381132, now seen corresponding path program 1 times [2021-08-30 17:47:05,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:47:05,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855310700] [2021-08-30 17:47:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:05,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:47:05,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:47:05,193 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) [2021-08-30 17:47:05,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-08-30 17:47:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-30 17:47:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:05,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:47:05,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:05,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:05,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-08-30 17:47:05,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-08-30 17:47:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:05,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:07,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2021-08-30 17:47:07,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2021-08-30 17:47:07,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-08-30 17:47:07,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-08-30 17:47:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:07,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:07,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:08,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:47:08,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855310700] [2021-08-30 17:47:08,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855310700] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:47:08,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:47:08,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [] total 24 [2021-08-30 17:47:08,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908705154] [2021-08-30 17:47:08,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-30 17:47:08,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:47:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-30 17:47:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-30 17:47:08,658 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 22 states have internal predecessors, (42), 7 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 17:47:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:47:11,104 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2021-08-30 17:47:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 17:47:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 22 states have internal predecessors, (42), 7 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 35 [2021-08-30 17:47:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:47:11,106 INFO L225 Difference]: With dead ends: 99 [2021-08-30 17:47:11,106 INFO L226 Difference]: Without dead ends: 99 [2021-08-30 17:47:11,106 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1509.87ms TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-08-30 17:47:11,107 INFO L928 BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1954.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 2189.97ms IncrementalHoareTripleChecker+Time [2021-08-30 17:47:11,107 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 1153 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [7 Valid, 949 Invalid, 0 Unknown, 197 Unchecked, 2189.97ms Time] [2021-08-30 17:47:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-30 17:47:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2021-08-30 17:47:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 54 states have internal predecessors, (55), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-30 17:47:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-08-30 17:47:11,109 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 35 [2021-08-30 17:47:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:47:11,109 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-08-30 17:47:11,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 22 states have internal predecessors, (42), 7 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 17:47:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-08-30 17:47:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 17:47:11,109 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:47:11,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:47:11,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:11,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:47:11,317 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_list_delErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:47:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:47:11,318 INFO L82 PathProgramCache]: Analyzing trace with hash -379497064, now seen corresponding path program 1 times [2021-08-30 17:47:11,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:47:11,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790821841] [2021-08-30 17:47:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:11,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:47:11,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:47:11,319 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:47:11,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-08-30 17:47:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:11,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 17:47:11,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:11,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:47:11,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:11,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-08-30 17:47:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:11,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:12,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-08-30 17:47:12,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:47:12,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790821841] [2021-08-30 17:47:12,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:47:12,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134998829] [2021-08-30 17:47:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:12,483 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:47:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:47:12,484 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:47:12,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-08-30 17:47:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:12,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-30 17:47:12,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:12,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:12,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:47:13,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:13,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-08-30 17:47:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:13,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:14,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-08-30 17:47:14,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-08-30 17:47:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:14,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [134998829] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:47:14,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:47:14,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 14] imperfect sequences [] total 26 [2021-08-30 17:47:14,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108917132] [2021-08-30 17:47:14,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-30 17:47:14,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:47:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-30 17:47:14,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2021-08-30 17:47:14,862 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 27 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 9 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-30 17:47:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:47:16,265 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-08-30 17:47:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-30 17:47:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 9 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 40 [2021-08-30 17:47:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:47:16,266 INFO L225 Difference]: With dead ends: 104 [2021-08-30 17:47:16,266 INFO L226 Difference]: Without dead ends: 104 [2021-08-30 17:47:16,267 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 90 SyntacticMatches, 16 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2042.23ms TimeCoverageRelationStatistics Valid=302, Invalid=2248, Unknown=0, NotChecked=0, Total=2550 [2021-08-30 17:47:16,268 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 124 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 660.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 748.16ms IncrementalHoareTripleChecker+Time [2021-08-30 17:47:16,268 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 64 Invalid, 945 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [80 Valid, 592 Invalid, 0 Unknown, 273 Unchecked, 748.16ms Time] [2021-08-30 17:47:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-30 17:47:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2021-08-30 17:47:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 60 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-30 17:47:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-08-30 17:47:16,276 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 40 [2021-08-30 17:47:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:47:16,276 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-08-30 17:47:16,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 9 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-08-30 17:47:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-08-30 17:47:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 17:47:16,277 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:47:16,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:47:16,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:16,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-08-30 17:47:16,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-30 17:47:16,689 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:47:16,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:47:16,689 INFO L82 PathProgramCache]: Analyzing trace with hash -379497063, now seen corresponding path program 1 times [2021-08-30 17:47:16,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:47:16,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217539073] [2021-08-30 17:47:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:16,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:47:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:47:16,691 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:47:16,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-08-30 17:47:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:16,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-30 17:47:16,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:16,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:47:17,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:17,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:17,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-08-30 17:47:17,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-08-30 17:47:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:17,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:18,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2021-08-30 17:47:18,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2021-08-30 17:47:19,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-08-30 17:47:19,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-08-30 17:47:19,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:19,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:19,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:19,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:20,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:47:20,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217539073] [2021-08-30 17:47:20,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217539073] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:47:20,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:47:20,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 14] imperfect sequences [] total 28 [2021-08-30 17:47:20,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472268582] [2021-08-30 17:47:20,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-30 17:47:20,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:47:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-30 17:47:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-08-30 17:47:20,682 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 24 states have internal predecessors, (50), 9 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 17:47:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:47:23,204 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2021-08-30 17:47:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 17:47:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 24 states have internal predecessors, (50), 9 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 40 [2021-08-30 17:47:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:47:23,206 INFO L225 Difference]: With dead ends: 93 [2021-08-30 17:47:23,206 INFO L226 Difference]: Without dead ends: 93 [2021-08-30 17:47:23,206 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2251.38ms TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2021-08-30 17:47:23,207 INFO L928 BasicCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1812.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 2042.13ms IncrementalHoareTripleChecker+Time [2021-08-30 17:47:23,207 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 119 Invalid, 938 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [15 Valid, 742 Invalid, 0 Unknown, 181 Unchecked, 2042.13ms Time] [2021-08-30 17:47:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-30 17:47:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-08-30 17:47:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 60 states have internal predecessors, (61), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-30 17:47:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2021-08-30 17:47:23,209 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 40 [2021-08-30 17:47:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:47:23,210 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2021-08-30 17:47:23,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 24 states have internal predecessors, (50), 9 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 17:47:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2021-08-30 17:47:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-30 17:47:23,210 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:47:23,210 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:47:23,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:23,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:47:23,418 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:47:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:47:23,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1117904272, now seen corresponding path program 1 times [2021-08-30 17:47:23,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:47:23,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151658946] [2021-08-30 17:47:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:23,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:47:23,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:47:23,420 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:47:23,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-08-30 17:47:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:23,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-30 17:47:23,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:23,608 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:47:23,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:47:23,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-08-30 17:47:23,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:23,844 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-30 17:47:23,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2021-08-30 17:47:23,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-08-30 17:47:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:23,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:24,541 INFO L388 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 8 treesize of output 6 [2021-08-30 17:47:24,657 INFO L388 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 30 treesize of output 26 [2021-08-30 17:47:24,775 INFO L388 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 30 treesize of output 26 [2021-08-30 17:47:24,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-08-30 17:47:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:25,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:47:25,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151658946] [2021-08-30 17:47:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151658946] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:47:25,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:47:25,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 17] imperfect sequences [] total 30 [2021-08-30 17:47:25,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421974108] [2021-08-30 17:47:25,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-30 17:47:25,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:47:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-30 17:47:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2021-08-30 17:47:25,083 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 10 states have call successors, (14), 7 states have call predecessors, (14), 11 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:47:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:47:26,762 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2021-08-30 17:47:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-30 17:47:26,763 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 10 states have call successors, (14), 7 states have call predecessors, (14), 11 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 43 [2021-08-30 17:47:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:47:26,763 INFO L225 Difference]: With dead ends: 89 [2021-08-30 17:47:26,763 INFO L226 Difference]: Without dead ends: 89 [2021-08-30 17:47:26,764 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1083.57ms TimeCoverageRelationStatistics Valid=263, Invalid=1993, Unknown=0, NotChecked=0, Total=2256 [2021-08-30 17:47:26,764 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 195 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1021.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1189.09ms IncrementalHoareTripleChecker+Time [2021-08-30 17:47:26,764 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 23 Invalid, 1476 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [104 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1189.09ms Time] [2021-08-30 17:47:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-30 17:47:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2021-08-30 17:47:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 60 states have internal predecessors, (60), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-08-30 17:47:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-08-30 17:47:26,766 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 43 [2021-08-30 17:47:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:47:26,766 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-08-30 17:47:26,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 10 states have call successors, (14), 7 states have call predecessors, (14), 11 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:47:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-08-30 17:47:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-30 17:47:26,767 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:47:26,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:47:26,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-08-30 17:47:26,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:47:26,975 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __ldv_list_delErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-08-30 17:47:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:47:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash 129038098, now seen corresponding path program 1 times [2021-08-30 17:47:26,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:47:26,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634906717] [2021-08-30 17:47:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:26,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:47:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:47:26,976 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:47:27,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-08-30 17:47:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:27,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 69 conjunts are in the unsatisfiable core [2021-08-30 17:47:27,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:27,225 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:47:27,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:47:27,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-08-30 17:47:27,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:27,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:27,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:27,652 INFO L388 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 21 treesize of output 20 [2021-08-30 17:47:27,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:27,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:27,763 INFO L354 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2021-08-30 17:47:27,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2021-08-30 17:47:28,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 75 [2021-08-30 17:47:28,186 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 17:47:28,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 72 [2021-08-30 17:47:28,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2021-08-30 17:47:28,758 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-08-30 17:47:28,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 36 [2021-08-30 17:47:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:28,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:30,371 INFO L354 Elim1Store]: treesize reduction -1, result has 103.0 percent of original size [2021-08-30 17:47:30,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 98 [2021-08-30 17:47:31,456 INFO L354 Elim1Store]: treesize reduction -1, result has 103.0 percent of original size [2021-08-30 17:47:31,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 180 [2021-08-30 17:47:31,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-08-30 17:47:32,332 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:47:32,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 11349 treesize of output 10741 [2021-08-30 17:47:32,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9797 treesize of output 9725 [2021-08-30 17:47:32,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:47:32,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634906717] [2021-08-30 17:47:32,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-30 17:47:32,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [799793324] [2021-08-30 17:47:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:32,814 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:47:32,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:47:32,814 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:47:32,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-08-30 17:47:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:33,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 71 conjunts are in the unsatisfiable core [2021-08-30 17:47:33,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:33,128 INFO L354 Elim1Store]: treesize reduction 21, result has 46.2 percent of original size [2021-08-30 17:47:33,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 23 [2021-08-30 17:47:33,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:33,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-08-30 17:47:39,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 17:47:40,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:40,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:40,818 INFO L388 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 21 treesize of output 20 [2021-08-30 17:47:41,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:41,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:41,050 INFO L354 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2021-08-30 17:47:41,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2021-08-30 17:47:41,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 17:47:41,900 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-08-30 17:47:41,900 INFO L388 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 18 treesize of output 15 [2021-08-30 17:47:41,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-08-30 17:47:42,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 70 [2021-08-30 17:47:43,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:47:43,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 41 [2021-08-30 17:47:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:43,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:52,238 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:47:52,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 25927 treesize of output 24511 [2021-08-30 17:47:53,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23740 treesize of output 23220 [2021-08-30 17:47:53,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-30 17:47:53,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96405155] [2021-08-30 17:47:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:47:53,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:47:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:47:53,881 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:47:53,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-30 17:47:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:47:54,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 81 conjunts are in the unsatisfiable core [2021-08-30 17:47:54,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:47:54,172 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:47:54,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:47:54,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:54,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:54,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2021-08-30 17:47:55,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:56,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:47:56,015 INFO L388 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 21 treesize of output 20 [2021-08-30 17:47:56,290 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-08-30 17:47:56,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 28 treesize of output 38 [2021-08-30 17:47:56,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 17:47:57,105 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-30 17:47:57,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-08-30 17:47:57,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-08-30 17:47:57,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-30 17:47:57,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 53 [2021-08-30 17:47:58,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:47:58,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 24 [2021-08-30 17:47:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:47:58,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:47:58,654 INFO L354 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2021-08-30 17:47:58,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-08-30 17:48:05,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-08-30 17:48:06,382 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 17:48:06,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 5767 treesize of output 5527 [2021-08-30 17:48:06,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5428 treesize of output 5292 [2021-08-30 17:48:06,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-08-30 17:48:06,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:48:06,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:48:06,659 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:48:06,659 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:48:06,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (76 of 77 remaining) [2021-08-30 17:48:06,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (75 of 77 remaining) [2021-08-30 17:48:06,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (74 of 77 remaining) [2021-08-30 17:48:06,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (73 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (72 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (71 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (70 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (69 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (68 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (67 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (66 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (65 of 77 remaining) [2021-08-30 17:48:06,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (64 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (63 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (62 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (61 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (60 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (59 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (58 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (57 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (56 of 77 remaining) [2021-08-30 17:48:06,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (55 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (54 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (53 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (52 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (51 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (50 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (49 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (48 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (47 of 77 remaining) [2021-08-30 17:48:06,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_13Err0REQUIRES_VIOLATION (46 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_13Err1REQUIRES_VIOLATION (45 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_13Err2REQUIRES_VIOLATION (44 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_13Err3REQUIRES_VIOLATION (43 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_13Err4REQUIRES_VIOLATION (42 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_13Err5REQUIRES_VIOLATION (41 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (40 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (39 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (38 of 77 remaining) [2021-08-30 17:48:06,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (37 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (36 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (35 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (34 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (33 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (32 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (31 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (30 of 77 remaining) [2021-08-30 17:48:06,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (29 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (28 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (27 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (26 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (25 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (24 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (23 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (22 of 77 remaining) [2021-08-30 17:48:06,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (21 of 77 remaining) [2021-08-30 17:48:06,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (20 of 77 remaining) [2021-08-30 17:48:06,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (19 of 77 remaining) [2021-08-30 17:48:06,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (18 of 77 remaining) [2021-08-30 17:48:06,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (17 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (16 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (15 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (14 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (13 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (12 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 77 remaining) [2021-08-30 17:48:06,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (8 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (7 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (6 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (5 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (4 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (3 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (2 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (1 of 77 remaining) [2021-08-30 17:48:06,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (0 of 77 remaining) [2021-08-30 17:48:06,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:06,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:07,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-08-30 17:48:07,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:48:07,299 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:48:07,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:48:07 BoogieIcfgContainer [2021-08-30 17:48:07,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:48:07,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:48:07,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:48:07,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:48:07,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:46:02" (3/4) ... [2021-08-30 17:48:07,311 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:48:07,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:48:07,312 INFO L158 Benchmark]: Toolchain (without parser) took 126464.47ms. Allocated memory was 52.4MB in the beginning and 371.2MB in the end (delta: 318.8MB). Free memory was 27.9MB in the beginning and 324.9MB in the end (delta: -297.0MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-08-30 17:48:07,312 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:48:07,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.22ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 27.7MB in the beginning and 43.1MB in the end (delta: -15.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-08-30 17:48:07,313 INFO L158 Benchmark]: Boogie Preprocessor took 65.56ms. Allocated memory is still 71.3MB. Free memory was 43.1MB in the beginning and 38.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:48:07,313 INFO L158 Benchmark]: RCFGBuilder took 776.75ms. Allocated memory is still 71.3MB. Free memory was 38.3MB in the beginning and 36.9MB in the end (delta: 1.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-08-30 17:48:07,314 INFO L158 Benchmark]: TraceAbstraction took 125218.70ms. Allocated memory was 71.3MB in the beginning and 371.2MB in the end (delta: 299.9MB). Free memory was 36.6MB in the beginning and 324.9MB in the end (delta: -288.3MB). Peak memory consumption was 220.3MB. Max. memory is 16.1GB. [2021-08-30 17:48:07,314 INFO L158 Benchmark]: Witness Printer took 3.22ms. Allocated memory is still 371.2MB. Free memory is still 324.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:48:07,319 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 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.22ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 27.7MB in the beginning and 43.1MB in the end (delta: -15.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.56ms. Allocated memory is still 71.3MB. Free memory was 43.1MB in the beginning and 38.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 776.75ms. Allocated memory is still 71.3MB. Free memory was 38.3MB in the beginning and 36.9MB in the end (delta: 1.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 125218.70ms. Allocated memory was 71.3MB in the beginning and 371.2MB in the end (delta: 299.9MB). Free memory was 36.6MB in the beginning and 324.9MB in the end (delta: -288.3MB). Peak memory consumption was 220.3MB. Max. memory is 16.1GB. * Witness Printer took 3.22ms. Allocated memory is still 371.2MB. Free memory is still 324.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; [L781] CALL entry_point() [L776] CALL alloc_13() [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) [L765] CALL ldv_list_add(&p->list, &global_list_13) [L559] EXPR head->next [L559] CALL __ldv_list_add(new, head, head->next) [L547] next->prev = new [L548] new->next = next [L549] new->prev = prev [L550] prev->next = new [L559] RET __ldv_list_add(new, head, head->next) [L765] RET ldv_list_add(&p->list, &global_list_13) [L776] RET alloc_13() [L777] CALL free_unsafe_13() [L769] struct A13 *p; [L770] struct A13 *n; [L771] EXPR (&global_list_13)->next [L771] const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((&global_list_13)->next); [L771] p = ({ const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((&global_list_13)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );}) [L771] EXPR (p)->list.next [L771] const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); [L771] n = ({ const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); (typeof(*(p)) *)( (char *)__mptr - ((size_t) &((typeof(*(p)) *)0)->list) );}) [L771] COND TRUE &p->list != (&global_list_13) [L772] CALL ldv_list_del(&p->list) [L567] EXPR entry->prev [L567] EXPR entry->next [L567] CALL __ldv_list_del(entry->prev, entry->next) [L554] next->prev = prev - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 49 procedures, 354 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 125169.01ms, OverallIterations: 23, TraceHistogramMax: 1, EmptinessCheckTime: 22.38ms, AutomataDifference: 20468.42ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.71ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2419 SdHoareTripleChecker+Valid, 16392.40ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2396 mSDsluCounter, 1604 SdHoareTripleChecker+Invalid, 14389.93ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1719 IncrementalHoareTripleChecker+Unchecked, 5380 mSDsCounter, 732 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11211 IncrementalHoareTripleChecker+Invalid, 13662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 732 mSolverCounterUnsat, 396 mSDtfsCounter, 11211 mSolverCounterSat, 63.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1346 GetRequests, 874 SyntacticMatches, 72 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2385 ImplicationChecksByTransitivity, 43868.30ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=0, InterpolantAutomatonStates: 249, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 124.44ms AutomataMinimizationTime, 22 MinimizatonAttempts, 246 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 214.06ms SsaConstructionTime, 669.12ms SatisfiabilityAnalysisTime, 53776.62ms InterpolantComputationTime, 567 NumberOfCodeBlocks, 567 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1090 ConstructedInterpolants, 94 QuantifiedInterpolants, 13580 SizeOfPredicates, 238 NumberOfNonLiveVariables, 3259 ConjunctsInSsa, 445 ConjunctsInUnsatCore, 44 InterpolantComputations, 44 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:48:07,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...