./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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_test4-1.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 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:10:28,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:10:28,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:10:28,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:10:28,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:10:28,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:10:28,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:10:28,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:10:28,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:10:28,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:10:28,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:10:28,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:10:28,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:10:28,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:10:28,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:10:28,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:10:28,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:10:28,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:10:28,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:10:28,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:10:28,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:10:28,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:10:28,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:10:28,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:10:28,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:10:28,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:10:28,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:10:28,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:10:28,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:10:28,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:10:28,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:10:28,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:10:28,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:10:28,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:10:28,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:10:28,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:10:28,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:10:28,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:10:28,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:10:28,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:10:28,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:10:28,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:10:28,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:10:28,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:10:28,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:10:28,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:10:28,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:10:28,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:10:28,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:10:28,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:10:28,424 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:10:28,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:10:28,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:10:28,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:10:28,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:10:28,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:10:28,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:10:28,426 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:10:28,426 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:10:28,426 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:10:28,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:10:28,427 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:10:28,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:10:28,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:10:28,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:10:28,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:10:28,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:10:28,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:10:28,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:10:28,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:10:28,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:10:28,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:10:28,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:10:28,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-12-22 00:10:28,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:10:28,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:10:28,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:10:28,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:10:28,674 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:10:28,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-22 00:10:28,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7268ead95/029a69d668e34223be1f86735de472b4/FLAG26a20182e [2021-12-22 00:10:29,256 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:10:29,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-22 00:10:29,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7268ead95/029a69d668e34223be1f86735de472b4/FLAG26a20182e [2021-12-22 00:10:29,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7268ead95/029a69d668e34223be1f86735de472b4 [2021-12-22 00:10:29,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:10:29,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:10:29,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:10:29,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:10:29,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:10:29,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:10:29" (1/1) ... [2021-12-22 00:10:29,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f9ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:29, skipping insertion in model container [2021-12-22 00:10:29,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:10:29" (1/1) ... [2021-12-22 00:10:29,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:10:29,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:10:30,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:10:30,194 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-22 00:10:30,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53b9ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:30, skipping insertion in model container [2021-12-22 00:10:30,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:10:30,196 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 00:10:30,198 INFO L158 Benchmark]: Toolchain (without parser) took 439.66ms. Allocated memory is still 121.6MB. Free memory was 92.7MB in the beginning and 90.5MB in the end (delta: 2.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 00:10:30,199 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:10:30,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.55ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 90.5MB in the end (delta: 1.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 00:10:30,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.55ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 90.5MB in the end (delta: 1.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.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 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:10:31,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:10:31,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:10:31,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:10:31,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:10:31,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:10:31,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:10:31,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:10:31,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:10:31,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:10:31,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:10:31,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:10:31,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:10:31,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:10:31,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:10:31,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:10:31,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:10:31,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:10:31,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:10:31,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:10:31,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:10:31,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:10:31,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:10:31,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:10:31,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:10:31,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:10:31,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:10:31,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:10:31,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:10:31,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:10:31,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:10:31,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:10:31,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:10:31,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:10:31,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:10:31,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:10:31,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:10:31,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:10:31,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:10:31,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:10:31,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:10:31,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 00:10:31,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:10:31,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:10:31,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:10:31,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:10:31,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:10:31,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:10:31,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:10:31,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:10:31,995 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:10:31,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:10:31,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:10:31,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:10:31,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:10:31,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:10:31,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:10:31,997 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:10:31,997 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:10:31,998 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:10:31,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:10:31,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:10:31,998 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 00:10:31,998 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 00:10:31,998 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:10:31,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:10:31,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:10:31,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:10:32,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:10:32,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:10:32,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:10:32,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:10:32,007 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 00:10:32,008 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 00:10:32,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:10:32,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 00:10:32,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-12-22 00:10:32,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:10:32,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:10:32,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:10:32,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:10:32,303 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:10:32,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-22 00:10:32,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6ddadf8/13846dd86ed8499bb741aec14d97739b/FLAG4708dbb34 [2021-12-22 00:10:32,866 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:10:32,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-22 00:10:32,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6ddadf8/13846dd86ed8499bb741aec14d97739b/FLAG4708dbb34 [2021-12-22 00:10:33,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6ddadf8/13846dd86ed8499bb741aec14d97739b [2021-12-22 00:10:33,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:10:33,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:10:33,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:10:33,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:10:33,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:10:33,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cc5dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33, skipping insertion in model container [2021-12-22 00:10:33,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:10:33,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:10:33,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:10:33,757 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 00:10:33,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:10:33,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:10:33,842 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:10:33,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:10:33,942 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:10:33,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33 WrapperNode [2021-12-22 00:10:33,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:10:33,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:10:33,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:10:33,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:10:33,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,983 INFO L137 Inliner]: procedures = 165, calls = 70, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 22 [2021-12-22 00:10:33,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:10:33,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:10:33,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:10:33,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:10:33,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:33,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:34,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:34,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:10:34,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:10:34,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:10:34,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:10:34,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (1/1) ... [2021-12-22 00:10:34,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:10:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:10:34,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 00:10:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 00:10:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 00:10:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 00:10:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:10:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:10:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:10:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 00:10:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:10:34,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:10:34,177 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:10:34,178 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:10:34,284 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:10:34,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:10:34,289 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 00:10:34,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:10:34 BoogieIcfgContainer [2021-12-22 00:10:34,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:10:34,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:10:34,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:10:34,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:10:34,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:10:33" (1/3) ... [2021-12-22 00:10:34,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335b92c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:10:34, skipping insertion in model container [2021-12-22 00:10:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:10:33" (2/3) ... [2021-12-22 00:10:34,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335b92c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:10:34, skipping insertion in model container [2021-12-22 00:10:34,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:10:34" (3/3) ... [2021-12-22 00:10:34,296 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2021-12-22 00:10:34,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:10:34,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-22 00:10:34,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:10:34,341 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 00:10:34,355 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-22 00:10:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:10:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:10:34,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:34,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:34,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash 810748839, now seen corresponding path program 1 times [2021-12-22 00:10:34,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:34,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124740474] [2021-12-22 00:10:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:34,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:34,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:34,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 00:10:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:10:34,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:10:34,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:10:34,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:34,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:34,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124740474] [2021-12-22 00:10:34,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124740474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:34,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:34,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:10:34,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231697697] [2021-12-22 00:10:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:34,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:10:34,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:10:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:10:34,666 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:10:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:34,705 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-12-22 00:10:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:10:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-22 00:10:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:34,719 INFO L225 Difference]: With dead ends: 39 [2021-12-22 00:10:34,719 INFO L226 Difference]: Without dead ends: 35 [2021-12-22 00:10:34,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:10:34,727 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:34,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 98 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:10:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-22 00:10:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2021-12-22 00:10:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 00:10:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-22 00:10:34,774 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-12-22 00:10:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:34,775 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-22 00:10:34,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:10:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-22 00:10:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:10:34,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:34,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:34,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:34,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:34,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1698252520, now seen corresponding path program 1 times [2021-12-22 00:10:34,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:34,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68555108] [2021-12-22 00:10:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:34,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:34,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:34,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:34,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 00:10:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:10:35,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:10:35,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:10:35,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:35,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:35,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68555108] [2021-12-22 00:10:35,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68555108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:35,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:35,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:10:35,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715162930] [2021-12-22 00:10:35,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:35,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:10:35,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:10:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:10:35,069 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:10:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:35,102 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-12-22 00:10:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:10:35,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-22 00:10:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:35,103 INFO L225 Difference]: With dead ends: 34 [2021-12-22 00:10:35,103 INFO L226 Difference]: Without dead ends: 32 [2021-12-22 00:10:35,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:10:35,105 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:35,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 66 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:10:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-22 00:10:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-12-22 00:10:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:10:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-12-22 00:10:35,109 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2021-12-22 00:10:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:35,110 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-12-22 00:10:35,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 00:10:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-12-22 00:10:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 00:10:35,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:35,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:35,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:35,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:35,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 594490405, now seen corresponding path program 1 times [2021-12-22 00:10:35,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:35,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002618333] [2021-12-22 00:10:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:35,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:35,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:35,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:35,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 00:10:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:10:35,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:10:35,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:10:35,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:35,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002618333] [2021-12-22 00:10:35,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002618333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:35,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:35,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:10:35,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037730300] [2021-12-22 00:10:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:35,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:10:35,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:10:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:10:35,417 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:35,427 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-22 00:10:35,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:10:35,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-12-22 00:10:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:35,429 INFO L225 Difference]: With dead ends: 19 [2021-12-22 00:10:35,429 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 00:10:35,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:10:35,430 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:35,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:10:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 00:10:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 00:10:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:10:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-22 00:10:35,434 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2021-12-22 00:10:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:35,434 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-22 00:10:35,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-22 00:10:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:10:35,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:35,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:35,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:35,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:35,644 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1249333420, now seen corresponding path program 1 times [2021-12-22 00:10:35,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:35,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751534481] [2021-12-22 00:10:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:35,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:35,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:35,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:35,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 00:10:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:10:35,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 00:10:35,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:10:36,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:36,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:36,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751534481] [2021-12-22 00:10:36,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751534481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:36,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:36,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 00:10:36,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765307818] [2021-12-22 00:10:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:36,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 00:10:36,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 00:10:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:10:36,035 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:10:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:36,041 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-12-22 00:10:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 00:10:36,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-12-22 00:10:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:36,043 INFO L225 Difference]: With dead ends: 32 [2021-12-22 00:10:36,043 INFO L226 Difference]: Without dead ends: 32 [2021-12-22 00:10:36,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 00:10:36,044 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:36,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 66 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2021-12-22 00:10:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-22 00:10:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-12-22 00:10:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 00:10:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-12-22 00:10:36,048 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-12-22 00:10:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:36,048 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-22 00:10:36,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 00:10:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-12-22 00:10:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:10:36,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:36,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:36,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:36,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:36,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1277962571, now seen corresponding path program 1 times [2021-12-22 00:10:36,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:36,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744084230] [2021-12-22 00:10:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:36,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:36,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:36,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 00:10:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:10:36,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 00:10:36,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:10:36,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:36,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:36,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744084230] [2021-12-22 00:10:36,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744084230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:36,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:36,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:10:36,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997541999] [2021-12-22 00:10:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:36,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:10:36,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:10:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:10:36,407 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:36,452 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-12-22 00:10:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:10:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-22 00:10:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:36,453 INFO L225 Difference]: With dead ends: 40 [2021-12-22 00:10:36,453 INFO L226 Difference]: Without dead ends: 40 [2021-12-22 00:10:36,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:10:36,454 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:36,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 60 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:10:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-22 00:10:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-12-22 00:10:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 00:10:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-12-22 00:10:36,460 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2021-12-22 00:10:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:36,460 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-12-22 00:10:36,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-12-22 00:10:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 00:10:36,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:36,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:36,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:36,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:36,670 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:36,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 955930413, now seen corresponding path program 2 times [2021-12-22 00:10:36,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:36,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920185190] [2021-12-22 00:10:36,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:10:36,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:36,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:36,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 00:10:36,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 00:10:36,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:10:36,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 00:10:36,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:10:36,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:36,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:36,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920185190] [2021-12-22 00:10:36,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920185190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:36,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:36,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:10:36,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312932318] [2021-12-22 00:10:36,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:36,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 00:10:36,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 00:10:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:10:36,822 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:36,866 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-12-22 00:10:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 00:10:36,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-22 00:10:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:36,867 INFO L225 Difference]: With dead ends: 39 [2021-12-22 00:10:36,867 INFO L226 Difference]: Without dead ends: 39 [2021-12-22 00:10:36,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 00:10:36,868 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:36,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 38 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:10:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-22 00:10:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-12-22 00:10:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 00:10:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-12-22 00:10:36,872 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 17 [2021-12-22 00:10:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:36,873 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-22 00:10:36,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-12-22 00:10:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 00:10:36,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:36,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:36,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:37,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:37,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash 74630407, now seen corresponding path program 1 times [2021-12-22 00:10:37,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332490967] [2021-12-22 00:10:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:37,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:37,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:37,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 00:10:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:10:37,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 00:10:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:10:37,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 00:10:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 00:10:37,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:10:37,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:10:37,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332490967] [2021-12-22 00:10:37,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332490967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:10:37,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:10:37,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 00:10:37,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760448713] [2021-12-22 00:10:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:10:37,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:10:37,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:10:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:10:37,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:10:37,188 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:10:37,221 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-12-22 00:10:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:10:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-12-22 00:10:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:10:37,222 INFO L225 Difference]: With dead ends: 32 [2021-12-22 00:10:37,222 INFO L226 Difference]: Without dead ends: 32 [2021-12-22 00:10:37,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:10:37,222 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:10:37,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 00:10:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-22 00:10:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-12-22 00:10:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-22 00:10:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-22 00:10:37,230 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2021-12-22 00:10:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:10:37,230 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-22 00:10:37,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 00:10:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-22 00:10:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 00:10:37,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:10:37,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:37,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:37,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:37,432 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-22 00:10:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:10:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1294621142, now seen corresponding path program 1 times [2021-12-22 00:10:37,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:10:37,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641190261] [2021-12-22 00:10:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:10:37,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:10:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:10:37,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:10:37,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 00:10:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 00:10:37,529 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 00:10:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 00:10:37,570 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-22 00:10:37,571 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 00:10:37,571 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2021-12-22 00:10:37,573 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2021-12-22 00:10:37,573 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2021-12-22 00:10:37,573 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (0 of 4 remaining) [2021-12-22 00:10:37,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-22 00:10:37,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:10:37,776 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-12-22 00:10:37,778 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 00:10:37,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:10:37 BoogieIcfgContainer [2021-12-22 00:10:37,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 00:10:37,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 00:10:37,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 00:10:37,799 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 00:10:37,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:10:34" (3/4) ... [2021-12-22 00:10:37,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 00:10:37,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 00:10:37,805 INFO L158 Benchmark]: Toolchain (without parser) took 4458.56ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 25.7MB in the beginning and 47.6MB in the end (delta: -21.9MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,806 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.7MB in the beginning and 32.6MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:10:37,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.40ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 25.6MB in the beginning and 32.7MB in the end (delta: -7.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.65ms. Allocated memory is still 67.1MB. Free memory was 32.7MB in the beginning and 48.4MB in the end (delta: -15.7MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,806 INFO L158 Benchmark]: Boogie Preprocessor took 17.60ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 47.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,807 INFO L158 Benchmark]: RCFGBuilder took 288.23ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 36.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,807 INFO L158 Benchmark]: TraceAbstraction took 3506.92ms. Allocated memory is still 67.1MB. Free memory was 35.9MB in the beginning and 23.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,807 INFO L158 Benchmark]: Witness Printer took 5.80ms. Allocated memory is still 67.1MB. Free memory was 23.0MB in the beginning and 47.6MB in the end (delta: -24.6MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-12-22 00:10:37,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.7MB in the beginning and 32.6MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.40ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 25.6MB in the beginning and 32.7MB in the end (delta: -7.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.65ms. Allocated memory is still 67.1MB. Free memory was 32.7MB in the beginning and 48.4MB in the end (delta: -15.7MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.60ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 47.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.23ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 36.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3506.92ms. Allocated memory is still 67.1MB. Free memory was 35.9MB in the beginning and 23.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 5.80ms. Allocated memory is still 67.1MB. Free memory was 23.0MB in the beginning and 47.6MB in the end (delta: -24.6MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 764. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L765] CALL entry_point() [L758] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={6:0}] [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) VAL [ldv_global_msg_list={1:0}, p={6:0}] [L760] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L760] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={2:0}, p={6:0}] [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) VAL [ldv_global_msg_list={1:0}, p={6:0}, q={2:0}] [L761] free(q) VAL [ldv_global_msg_list={1:0}, p={6:0}, q={2:0}] [L761] free(q) [L765] RET entry_point() - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 430 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 47 IncrementalHoareTripleChecker+Unchecked, 280 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 150 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 127 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 12 QuantifiedInterpolants, 395 SizeOfPredicates, 1 NumberOfNonLiveVariables, 343 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 20/20 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 [2021-12-22 00:10:37,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample